CVE-2023-3776

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation.

If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.

The Linux Kernel, the operating system core itself.

Security Fix(es):

In multiple functions of binder.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

(CVE-2023-21255)

(CVE-2023-2163)

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_TREE_CONNECT and SMB2_QUERY_INFO commands. The issue results from the lack of proper validation of a pointer prior to accessing it. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.(CVE-2023-32248)

VUL-0: CVE-2023-32255: kernel: Linux Kernel ksmbd Session Setup Memory Leak Denial-of-Service Vulnerability(CVE-2023-32255)

A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux Kernel. This flaw allows an attacker with local user access to cause a system crash or leak internal kernel information.(CVE-2023-3567)

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation.

If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.

(CVE-2023-3609)

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.

Flaw in the error handling of bound chains causes a use-after-free in the abort path of NFT_MSG_NEWRULE. The vulnerability requires CAP_NET_ADMIN to be triggered.

We recommend upgrading past commit 4bedf9eee016286c835e3d8fa981ddece5338795.

(CVE-2023-3610)

An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation.

The qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated according to packet sizes without bounds checks.

We recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64.

(CVE-2023-3611)

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation.

If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.

(CVE-2023-3776)

An issue was discovered in the Linux kernel before 6.3.4. ksmbd has an out-of-bounds read in smb2_find_context_vals when create_context's name_len is larger than the tag length.(CVE-2023-38426)

An issue was discovered in the Linux kernel before 6.3.4. fs/ksmbd/smb2pdu.c in ksmbd does not properly check the UserName value because it does not consider the address of security buffer, leading to an out-of-bounds read.(CVE-2023-38428)

The Linux Kernel, the operating system core itself.

Security Fix(es):

In multiple functions of binder.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

(CVE-2023-21255)

(CVE-2023-2163)

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_TREE_CONNECT and SMB2_QUERY_INFO commands. The issue results from the lack of proper validation of a pointer prior to accessing it. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.(CVE-2023-32248)

VUL-0: CVE-2023-32255: kernel: Linux Kernel ksmbd Session Setup Memory Leak Denial-of-Service Vulnerability(CVE-2023-32255)

A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux Kernel. This flaw allows an attacker with local user access to cause a system crash or leak internal kernel information.(CVE-2023-3567)

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation.

If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.

(CVE-2023-3609)

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.

Flaw in the error handling of bound chains causes a use-after-free in the abort path of NFT_MSG_NEWRULE. The vulnerability requires CAP_NET_ADMIN to be triggered.

We recommend upgrading past commit 4bedf9eee016286c835e3d8fa981ddece5338795.

(CVE-2023-3610)

An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation.

The qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated according to packet sizes without bounds checks.

We recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64.

(CVE-2023-3611)

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation.

If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.

(CVE-2023-3776)

An issue was discovered in the Linux kernel before 6.3.4. ksmbd has an out-of-bounds read in smb2_find_context_vals when create_context's name_len is larger than the tag length.(CVE-2023-38426)

An issue was discovered in the Linux kernel before 6.3.4. fs/ksmbd/smb2pdu.c in ksmbd does not properly check the UserName value because it does not consider the address of security buffer, leading to an out-of-bounds read.(CVE-2023-38428)

The Linux Kernel, the operating system core itself.

Security Fix(es):

In multiple functions of binder.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

(CVE-2023-21255)

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation.

If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.

(CVE-2023-3609)

An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation.

The qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated according to packet sizes without bounds checks.

We recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64.

(CVE-2023-3611)

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation.

If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.

(CVE-2023-3776)

An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.(CVE-2023-3812)

The Linux Kernel, the operating system core itself.

Security Fix(es):

In multiple functions of binder.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

(CVE-2023-21255)

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation.

If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.

(CVE-2023-3609)

An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation.

The qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated according to packet sizes without bounds checks.

We recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64.

(CVE-2023-3611)

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation.

If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.

(CVE-2023-3776)

An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.(CVE-2023-3812)

The Linux Kernel, the operating system core itself.

Security Fix(es):

In multiple functions of binder.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

(CVE-2023-21255)

(CVE-2023-2163)

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_TREE_CONNECT and SMB2_QUERY_INFO commands. The issue results from the lack of proper validation of a pointer prior to accessing it. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.(CVE-2023-32248)

VUL-0: CVE-2023-32255: kernel: Linux Kernel ksmbd Session Setup Memory Leak Denial-of-Service Vulnerability(CVE-2023-32255)

A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux Kernel. This flaw allows an attacker with local user access to cause a system crash or leak internal kernel information.(CVE-2023-3567)

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation.

If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.

(CVE-2023-3609)

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.

Flaw in the error handling of bound chains causes a use-after-free in the abort path of NFT_MSG_NEWRULE. The vulnerability requires CAP_NET_ADMIN to be triggered.

We recommend upgrading past commit 4bedf9eee016286c835e3d8fa981ddece5338795.

(CVE-2023-3610)

An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation.

The qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated according to packet sizes without bounds checks.

We recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64.

(CVE-2023-3611)

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation.

If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.

(CVE-2023-3776)

An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.(CVE-2023-3812)

An issue was discovered in the Linux kernel before 6.3.4. ksmbd has an out-of-bounds read in smb2_find_context_vals when create_context's name_len is larger than the tag length.(CVE-2023-38426)

An issue was discovered in the Linux kernel before 6.3.4. fs/ksmbd/smb2pdu.c in ksmbd does not properly check the UserName value because it does not consider the address of security buffer, leading to an out-of-bounds read.(CVE-2023-38428)

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)

• kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)

• kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)

• kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)

• kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)

• kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)

• kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)

• hw: amd: Cross-Process Information Leak (CVE-2023-20593)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

• low memory deadlock with md devices and external (imsm) metadata handling - requires a kernfs notification backport (BZ#2208540)

• Intel 8.9 BUG, SPR EMR FHF ACPI: Fix system hang during S3 wakeup (BZ#2218025)

• OCS 4.8, cephfs kernel crash: mds_dispatch ceph_handle_snap unable to handle kernel NULL (BZ#2218271)

• st_gmac: tx-checksum offload on vlan is not consistent with st_gmac interface (BZ#2219907)

• refcount_t overflow often happens in mem_cgroup_id_get_online() (BZ#2221010)

• avoid unnecessary page fault retires on shared memory types (BZ#2221100)

• enable conntrack clash resolution for GRE (BZ#2223542)

• ice: avoid bonding causing auxiliary plug/unplug under RTNL lock (BZ#2224515)

• libceph: harden msgr2.1 frame segment length checks [8.x] (BZ#2227073)

• Important iavf bug fixes July 2023 (BZ#2228161)

• i40e error: Cannot set interface MAC/vlanid to 1e:b7:e2:02:b1:aa/0 for ifname ens4f0 vf 0: Resource temporarily unavailable (BZ#2228163)

• oops on cifs_mount due to null tcon (BZ#2229128)

• iptables argument "--suppl-groups" in extension "owner" does not work in Rocky Linux8 (BZ#2229715)

• Hyper-V Rocky Linux 8: incomplete fc_transport implementation in storvsc causes null dereference in fc_timed_out() (BZ#2230743)

• Withdrawal: GFS2: could not freeze filesystem: -16 (BZ#2231825)

• Rocky Linux 8 Hyper-V: Excessive hv_storvsc driver logging with srb_status SRB_STATUS_INTERNAL_ERROR (0x30) (BZ#2231988)

• Rocky Linux-8: crypto: rng - Fix lock imbalance in crypto_del_rng (BZ#2232215)

• Intel 8.9 iavf: Driver Update (BZ#2232399)

• Hyper-V Rocky Linux-8 hv_storvsc driver logging excessive storvsc_log events for storvsc_on_io_completion() function (BZ#2233227)

Enhancement(s):

• Intel 8.9 FEAT, EMR perf: Add EMR CPU PMU support (BZ#2230152)

• Intel 8.9 FEAT, SPR EMR power: Add uncore frequency control driver (BZ#2230158)

• Intel 8.9 FEAT EMR perf: RAPL PMU support on EMR (BZ#2230162)

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)

• kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)

• kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)

• kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)

• kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)

• kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)

• kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)

• hw: amd: Cross-Process Information Leak (CVE-2023-20593)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

• low memory deadlock with md devices and external (imsm) metadata handling - requires a kernfs notification backport (BZ#2208540)

• Intel 8.9 BUG, SPR EMR FHF ACPI: Fix system hang during S3 wakeup (BZ#2218025)

• OCS 4.8, cephfs kernel crash: mds_dispatch ceph_handle_snap unable to handle kernel NULL (BZ#2218271)

• st_gmac: tx-checksum offload on vlan is not consistent with st_gmac interface (BZ#2219907)

• refcount_t overflow often happens in mem_cgroup_id_get_online() (BZ#2221010)

• avoid unnecessary page fault retires on shared memory types (BZ#2221100)

• enable conntrack clash resolution for GRE (BZ#2223542)

• ice: avoid bonding causing auxiliary plug/unplug under RTNL lock (BZ#2224515)

• libceph: harden msgr2.1 frame segment length checks [8.x] (BZ#2227073)

• Important iavf bug fixes July 2023 (BZ#2228161)

• i40e error: Cannot set interface MAC/vlanid to 1e:b7:e2:02:b1:aa/0 for ifname ens4f0 vf 0: Resource temporarily unavailable (BZ#2228163)

• oops on cifs_mount due to null tcon (BZ#2229128)

• iptables argument "--suppl-groups" in extension "owner" does not work in Rocky Linux SIG Cloud8 (BZ#2229715)

• Hyper-V Rocky Linux SIG Cloud 8: incomplete fc_transport implementation in storvsc causes null dereference in fc_timed_out() (BZ#2230743)

• Withdrawal: GFS2: could not freeze filesystem: -16 (BZ#2231825)

• Rocky Linux SIG Cloud 8 Hyper-V: Excessive hv_storvsc driver logging with srb_status SRB_STATUS_INTERNAL_ERROR (0x30) (BZ#2231988)

• Rocky Linux SIG Cloud-8: crypto: rng - Fix lock imbalance in crypto_del_rng (BZ#2232215)

• Intel 8.9 iavf: Driver Update (BZ#2232399)

• Hyper-V Rocky Linux SIG Cloud-8 hv_storvsc driver logging excessive storvsc_log events for storvsc_on_io_completion() function (BZ#2233227)

Enhancement(s):

• Intel 8.9 FEAT, EMR perf: Add EMR CPU PMU support (BZ#2230152)

• Intel 8.9 FEAT, SPR EMR power: Add uncore frequency control driver (BZ#2230158)

• Intel 8.9 FEAT EMR perf: RAPL PMU support on EMR (BZ#2230162)

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

The following packages have been upgraded to a later upstream version: kernel (5.14.0).

Security Fix(es):

• kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)
• kernel: netfilter: nf_tables: fix chain binding transaction logic in the abort path of NFT_MSG_NEWRULE (CVE-2023-3610)
• kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)
• kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)
• kernel: netfilter: nf_tables_newrule when adding a rule with NFTA_RULE_CHAIN_ID leads to use-after-free (CVE-2023-4147)
• kernel: nf_tables: use-after-free in nft_chain_lookup_byid() (CVE-2023-31248)
• kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)
• kernel: save/restore speculative MSRs during S3 suspend/resume (CVE-2023-1637)
• hw: amd: Cross-Process Information Leak (CVE-2023-20593)
• kernel: bypass of shadow stack protection due to a logic error (CVE-2023-21102)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

• [Intel 9.3 BUG] [SPR][EMR][FHF] ACPI: Fix system hang during S3 wakeup (BZ#2218026)
• [Dell 9.2 BUG] Monitor lost after replug WD19TBS to SUT port wiith VGA/DVI to type-C dongle (BZ#2219463)
• rtmutex: Incorrect waiter woken when requeueing in rt_mutex_adjust_prio_chain() (BZ#2222121)
• AlmaLinux AWS ARM Instability During Microshift e2e tests (BZ#2223310)
• AlmaLinux 9.x updates for SEV-SNP guest support (BZ#2224587)
• Lock state corruption from nested rtmutex blocking in blk_flush_plug() (BZ#2225623)
• bpf_jit_limit hit again - copy_seccomp() fix (BZ#2226945)
• libceph: harden msgr2.1 frame segment length checks (BZ#2227070)
• Temporary values used for the FIPS integrity test should be zeroized after use (BZ#2227768)
• Important iavf bug fixes July 2023 (BZ#2228156)
• [i40e/ice] error: Cannot set interface MAC/vlanid to 1e:b7:e2:02:b1:aa/0 for ifname ens4f0 vf 0: Resource temporarily unavailable (BZ#2228158)
• lvconvert --splitcache, --uncache operations getting hung (BZ#2228481)
• perf: EMR core and uncore PMU support (BZ#2230175)
• NVIDIA - Grace: Backport i2c: tegra: Set ACPI node as primary fwnode (BZ#2230483)
• NVIDIA - Grace: Backport i2c: tegra: Fix PEC support for SMBUS block read (BZ#2230488)
• [Hyper-V][AlmaLinux 9]incomplete fc_transport implementation in storvsc causes null dereference in fc_timed_out() (BZ#2230747)
• Kernel config option CONFIG_CRYPTO_STATS should be disabled until it is enhanced (BZ#2231850)
• [AlmaLinux 9][Hyper-V]Excessive hv_storvsc driver logging with srb_status SRB_STATUS_INTERNAL_ERROR (0x30) (BZ#2231990)
• AlmaLinux-9: WARNING: bad unlock balance detected! (BZ#2232213)
• NVIDIA - Grace: Backport drm/ast patch expected for kernel 6.4 (BZ#2232302)
• [Lenovo 9.1 bug] AlmaLinux 9 will hang when "echo c > /proc/sysrq-trigger". (BZ#2232700)
• [AlmaLinux-9] bz2022169 in /kernel/general/process/reg-suit fails on aarch64 (/proc/[pid]/wchan broken) (BZ#2233928)

Enhancement(s):

• [Intel 9.3 FEAT] cpufreq: intel_pstate: Enable HWP IO boost for all servers (BZ#2210270)
• [Dell 9.3 FEAT] - New MB with AMP Codec Change on Maya Bay (audio driver) (BZ#2218960)
• [Lenovo 9.3 FEAT] MDRAID - Update to the latest upstream (BZ#2221170)
• [Intel 9.3 FEAT] [EMR] Add EMR support to uncore-frequency driver (BZ#2230169)

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)
• kernel: netfilter: nf_tables: fix chain binding transaction logic in the abort path of NFT_MSG_NEWRULE (CVE-2023-3610)
• kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)
• kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)
• kernel: netfilter: nf_tables_newrule when adding a rule with NFTA_RULE_CHAIN_ID leads to use-after-free (CVE-2023-4147)
• kernel: nf_tables: use-after-free in nft_chain_lookup_byid() (CVE-2023-31248)
• kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)
• kernel: save/restore speculative MSRs during S3 suspend/resume (CVE-2023-1637)
• hw: amd: Cross-Process Information Leak (CVE-2023-20593)
• kernel: bypass of shadow stack protection due to a logic error (CVE-2023-21102)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

• kernel-rt: update RT source tree to the latest AlmaLinux-9.2.z3 Batch (BZ#2228482)

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)
• kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)
• kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)
• kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)
• kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)
• kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)
• kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)
• hw: amd: Cross-Process Information Leak (CVE-2023-20593)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

• low memory deadlock with md devices and external (imsm) metadata handling - requires a kernfs notification backport (BZ#2208540)
• Intel 8.9 BUG, SPR EMR FHF ACPI: Fix system hang during S3 wakeup (BZ#2218025)
• OCS 4.8, cephfs kernel crash: mds_dispatch ceph_handle_snap unable to handle kernel NULL (BZ#2218271)
• st_gmac: tx-checksum offload on vlan is not consistent with st_gmac interface (BZ#2219907)
• refcount_t overflow often happens in mem_cgroup_id_get_online() (BZ#2221010)
• avoid unnecessary page fault retires on shared memory types (BZ#2221100)
• enable conntrack clash resolution for GRE (BZ#2223542)
• ice: avoid bonding causing auxiliary plug/unplug under RTNL lock (BZ#2224515)
• libceph: harden msgr2.1 frame segment length checks [8.x] (BZ#2227073)
• Important iavf bug fixes July 2023 (BZ#2228161)
• i40e error: Cannot set interface MAC/vlanid to 1e:b7:e2:02:b1:aa/0 for ifname ens4f0 vf 0: Resource temporarily unavailable (BZ#2228163)
• oops on cifs_mount due to null tcon (BZ#2229128)
• iptables argument "--suppl-groups" in extension "owner" does not work in AlmaLinux8 (BZ#2229715)
• Hyper-V AlmaLinux 8: incomplete fc_transport implementation in storvsc causes null dereference in fc_timed_out() (BZ#2230743)
• Withdrawal: GFS2: could not freeze filesystem: -16 (BZ#2231825)
• AlmaLinux 8 Hyper-V: Excessive hv_storvsc driver logging with srb_status SRB_STATUS_INTERNAL_ERROR (0x30) (BZ#2231988)
• AlmaLinux-8: crypto: rng - Fix lock imbalance in crypto_del_rng (BZ#2232215)
• Intel 8.9 iavf: Driver Update (BZ#2232399)
• Hyper-V AlmaLinux-8 hv_storvsc driver logging excessive storvsc_log events for storvsc_on_io_completion() function (BZ#2233227)

Enhancement(s):

• Intel 8.9 FEAT, EMR perf: Add EMR CPU PMU support (BZ#2230152)
• Intel 8.9 FEAT, SPR EMR power: Add uncore frequency control driver (BZ#2230158)
• Intel 8.9 FEAT EMR perf: RAPL PMU support on EMR (BZ#2230162)

• CVE-url: https://ubuntu.com/security/CVE-2023-4128
  • net/sched: cls_u32: No longer copy tcf_result on update to avoid use-after- free
  • net/sched: cls_fw: No longer copy tcf_result on update to avoid use-after- free
  • net/sched: cls_route: No longer copy tcf_result on update to avoid use- after-free
• CVE-url: https://ubuntu.com/security/CVE-2023-40283
  • Bluetooth: L2CAP: Fix use-after-free in l2cap_sock_ready_cb
• Jammy update: v5.15.42 upstream stable release (LP: #1981375) // CVE-url: https://ubuntu.com/security/CVE-2023-4387
  • net: vmxnet3: fix possible use-after-free bugs in vmxnet3_rq_alloc_rx_buf()
• CVE-2023-20593 // CVE-url: https://ubuntu.com/security/CVE-2023-20593
  • x86/cpu/amd: Move the errata checking functionality up
  • x86/cpu/amd: Add a Zenbleed fix
• CVE-2023-35001 // CVE-url: https://ubuntu.com/security/CVE-2023-35001
  • netfilter: nf_tables: prevent OOB access in nft_byteorder_eval
• Bionic update: upstream stable patchset 2023-04-05 (LP: #2015399) // CVE- url: https://ubuntu.com/security/CVE-2023-3567
  • vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF
• CVE-url: https://ubuntu.com/security/CVE-2023-0458
  • prlimit: do_prlimit needs to have a speculation check
• CVE-url: https://ubuntu.com/security/CVE-2023-2513
  • ext4: fix use-after-free in ext4_xattr_set_entry
• Jammy update: v5.15.61 upstream stable release (LP: #1990162) // CVE-url: https://ubuntu.com/security/CVE-2023-2513
  • ext4: add EXT4_INODE_HAS_XATTR_SPACE macro in xattr.h
• CVE-url: https://ubuntu.com/security/CVE-2023-3159
  • firewire: fix potential uaf in outbound_phy_packet_callback()
• Jammy update: v5.15.106 upstream stable release (LP: #2023233) // CVE-url: https://ubuntu.com/security/CVE-2023-1611
  • btrfs: fix race between quota disable and quota assign ioctls
• CVE-url: https://ubuntu.com/security/CVE-2023-3611
  • net/sched: sch_qfq: account for stab overhead in qfq_enqueue
• CVE-2023-3776 // CVE-url: https://ubuntu.com/security/CVE-2023-3776
  • net/sched: cls_fw: Fix improper refcount update leads to use-after-free

• CVE-url: https://ubuntu.com/security/CVE-2023-4128
  • net/sched: cls_u32: No longer copy tcf_result on update to avoid use-after- free
  • net/sched: cls_fw: No longer copy tcf_result on update to avoid use-after- free
  • net/sched: cls_route: No longer copy tcf_result on update to avoid use- after-free
• CVE-url: https://ubuntu.com/security/CVE-2023-40283
  • Bluetooth: L2CAP: Fix use-after-free in l2cap_sock_ready_cb
• Jammy update: v5.15.42 upstream stable release (LP: #1981375) // CVE-url: https://ubuntu.com/security/CVE-2023-4387
  • net: vmxnet3: fix possible use-after-free bugs in vmxnet3_rq_alloc_rx_buf()
• CVE-2023-20593 // CVE-url: https://ubuntu.com/security/CVE-2023-20593
  • x86/cpu/amd: Move the errata checking functionality up
  • x86/cpu/amd: Add a Zenbleed fix
• CVE-2023-35001 // CVE-url: https://ubuntu.com/security/CVE-2023-35001
  • netfilter: nf_tables: prevent OOB access in nft_byteorder_eval
• Bionic update: upstream stable patchset 2023-04-05 (LP: #2015399) // CVE- url: https://ubuntu.com/security/CVE-2023-3567
  • vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF
• CVE-url: https://ubuntu.com/security/CVE-2023-0458
  • prlimit: do_prlimit needs to have a speculation check
• CVE-url: https://ubuntu.com/security/CVE-2023-2513
  • ext4: fix use-after-free in ext4_xattr_set_entry
• Jammy update: v5.15.61 upstream stable release (LP: #1990162) // CVE-url: https://ubuntu.com/security/CVE-2023-2513
  • ext4: add EXT4_INODE_HAS_XATTR_SPACE macro in xattr.h
• CVE-url: https://ubuntu.com/security/CVE-2023-3159
  • firewire: fix potential uaf in outbound_phy_packet_callback()
• Jammy update: v5.15.106 upstream stable release (LP: #2023233) // CVE-url: https://ubuntu.com/security/CVE-2023-1611
  • btrfs: fix race between quota disable and quota assign ioctls
• CVE-url: https://ubuntu.com/security/CVE-2023-3611
  • net/sched: sch_qfq: account for stab overhead in qfq_enqueue
• CVE-2023-3776 // CVE-url: https://ubuntu.com/security/CVE-2023-3776
  • net/sched: cls_fw: Fix improper refcount update leads to use-after-free

• netfilter: nft_set_pipapo: fix improper element removal {CVE-2023-4004}
• net: tun: fix bugs for oversize packet when napi frags enabled {CVE-2023-3812}
• net/sched: cls_fw: Fix improper refcount update leads to use-after-free {CVE-2023-3776}
• net/sched: sch_qfq: account for stab overhead in qfq_enqueue {CVE-2023-3611}
• net/sched: sch_qfq: refactor parsing of netlink parameters
• ipvlan:Fix out-of-bounds caused by unclear skb->cb {CVE-2023-3090}
• media: saa7134: fix use after free bug in saa7134_finidev due to race condition {CVE-2023-35823}
• media: dm1105: Fix use after free bug in dm1105_remove due to race condition {CVE-2023-35824}
• memstick: r592: Fix UAF bug in r592_remove due to race condition {CVE-2023-3141}
• ovl: fix use after free in struct ovl_aio_req {CVE-2023-1252}
• xen/netfront: don't use gnttab_query_foreign_access() for mapped status {CVE-2022-23037}
• xen/netfront: react properly to failing gnttab_end_foreign_access_ref() {CVE-2022-23042}
• xen/netfront: don't trust the backend response data blindly
• xen/netfront: disentangle tx_skb_freelist
• xen: sync include/xen/interface/io/ring.h with Xen's newest version
• net/sched: flower: fix possible OOB write in fl_set_geneve_opt() {CVE-2023-35788}
• rds: rds_rm_zerocopy_callback() use list_first_entry() {CVE-2023-1078}
• misc: sgi-gru: fix use-after-free error in gru_set_context_option, gru_fault and gru_handle_user_call_os {CVE-2022-3424}
• NFSD: Cap rsize_bop result based on send buffer size {CVE-2022-43945}
• NFSD: Protect against send buffer overflow in NFSv3 READ {CVE-2022-43945}
• NFSD: Protect against send buffer overflow in NFSv2 READ {CVE-2022-43945}
• SUNRPC: Fix svcxdr_init_encode's buflen calculation {CVE-2022-43945}
• SUNRPC: Fix svcxdr_init_decode's end-of-buffer calculation {CVE-2022-43945}
• mm/mremap: hold the rmap lock in write mode when moving page table entries. {CVE-2022-39189}
• KVM: x86: do not report a vCPU as preempted outside instruction boundaries {CVE-2022-39189}
• net: tls: fix possible race condition between do_tls_getsockopt_conf() and do_tls_setsockopt_conf() {CVE-2023-28466}
• tee: handle lookup of shm with reference count 0 {CVE-2021-44733}

• netfilter: nft_set_pipapo: fix improper element removal {CVE-2023-4004}
• net: tun: fix bugs for oversize packet when napi frags enabled {CVE-2023-3812}
• net/sched: cls_fw: Fix improper refcount update leads to use-after-free {CVE-2023-3776}
• net/sched: sch_qfq: account for stab overhead in qfq_enqueue {CVE-2023-3611}
• net/sched: sch_qfq: refactor parsing of netlink parameters
• ipvlan:Fix out-of-bounds caused by unclear skb->cb {CVE-2023-3090}
• media: saa7134: fix use after free bug in saa7134_finidev due to race condition {CVE-2023-35823}
• media: dm1105: Fix use after free bug in dm1105_remove due to race condition {CVE-2023-35824}
• memstick: r592: Fix UAF bug in r592_remove due to race condition {CVE-2023-3141}
• ovl: fix use after free in struct ovl_aio_req {CVE-2023-1252}
• xen/netfront: don't use gnttab_query_foreign_access() for mapped status {CVE-2022-23037}
• xen/netfront: react properly to failing gnttab_end_foreign_access_ref() {CVE-2022-23042}
• xen/netfront: don't trust the backend response data blindly {CVE-2022-23042}
• xen/netfront: disentangle tx_skb_freelist {CVE-2022-23042}
• xen: sync include/xen/interface/io/ring.h with Xen's newest version {CVE-2022-23042}
• net/sched: flower: fix possible OOB write in fl_set_geneve_opt() {CVE-2023-35788}
• rds: rds_rm_zerocopy_callback() use list_first_entry() {CVE-2023-1078}
• misc: sgi-gru: fix use-after-free error in gru_set_context_option, gru_fault and gru_handle_user_call_os {CVE-2022-3424}
• mac80211: do not accept/forward invalid EAPOL frames {CVE-2020-26139}
• bpf: Fix 32 bit src register truncation on div/mod {CVE-2021-3600}
• NFSD: Cap rsize_bop result based on send buffer size {CVE-2022-43945}
• NFSD: Protect against send buffer overflow in NFSv3 READ {CVE-2022-43945}
• SUNRPC: Fix svcxdr_init_encode's buflen calculation {CVE-2022-43945}
• KVM: x86: do not report a vCPU as preempted outside instruction boundaries {CVE-2022-39189}
• net: tls: fix possible race condition between do_tls_getsockopt_conf() and do_tls_setsockopt_conf() {CVE-2023-28466}
• tee: handle lookup of shm with reference count 0 {CVE-2021-44733}

• CVE-url: https://ubuntu.com/security/CVE-2023-4128
  • net/sched: cls_u32: No longer copy tcf_result on update to avoid use-after- free
  • net/sched: cls_fw: No longer copy tcf_result on update to avoid use-after- free
  • net/sched: cls_route: No longer copy tcf_result on update to avoid use- after-free
• CVE-url: https://ubuntu.com/security/CVE-2023-40283
  • Bluetooth: L2CAP: Fix use-after-free in l2cap_sock_ready_cb
• CVE-2023-20593 // CVE-url: https://ubuntu.com/security/CVE-2023-20593
  • x86/cpu/amd: Move the errata checking functionality up
  • x86/cpu/amd: Add a Zenbleed fix
• CVE-2023-1859 // CVE-url: https://ubuntu.com/security/CVE-2023-1859
  • 9p/xen : Fix use after free bug in xen_9pfs_front_remove due to race condition
• CVE-url: https://ubuntu.com/security/CVE-2023-35001
  • netfilter: nf_tables: prevent OOB access in nft_byteorder_eval
• Jammy update: v5.15.106 upstream stable release (LP: #2023233) // CVE-url: https://ubuntu.com/security/CVE-2023-1611
  • btrfs: fix race between quota disable and quota assign ioctls
• CVE-2023-3611 // CVE-url: https://ubuntu.com/security/CVE-2023-3611
  • net/sched: sch_qfq: account for stab overhead in qfq_enqueue
• CVE-2023-3776 // CVE-url: https://ubuntu.com/security/CVE-2023-3776
  • net/sched: cls_fw: Fix improper refcount update leads to use-after-free

• CVE-url: https://ubuntu.com/security/CVE-2023-4128
  • net/sched: cls_u32: No longer copy tcf_result on update to avoid use-after- free
  • net/sched: cls_fw: No longer copy tcf_result on update to avoid use-after- free
  • net/sched: cls_route: No longer copy tcf_result on update to avoid use- after-free
• CVE-url: https://ubuntu.com/security/CVE-2023-40283
  • Bluetooth: L2CAP: Fix use-after-free in l2cap_sock_ready_cb
• CVE-2023-20593 // CVE-url: https://ubuntu.com/security/CVE-2023-20593
  • x86/cpu/amd: Move the errata checking functionality up
  • x86/cpu/amd: Add a Zenbleed fix
• CVE-2023-1859 // CVE-url: https://ubuntu.com/security/CVE-2023-1859
  • 9p/xen : Fix use after free bug in xen_9pfs_front_remove due to race condition
• CVE-url: https://ubuntu.com/security/CVE-2023-35001
  • netfilter: nf_tables: prevent OOB access in nft_byteorder_eval
• Jammy update: v5.15.106 upstream stable release (LP: #2023233) // CVE-url: https://ubuntu.com/security/CVE-2023-1611
  • btrfs: fix race between quota disable and quota assign ioctls
• CVE-2023-3611 // CVE-url: https://ubuntu.com/security/CVE-2023-3611
  • net/sched: sch_qfq: account for stab overhead in qfq_enqueue
• CVE-2023-3776 // CVE-url: https://ubuntu.com/security/CVE-2023-3776
  • net/sched: cls_fw: Fix improper refcount update leads to use-after-free

• Bluetooth: L2CAP: Fix use-after-free in l2cap_sock_ready_cb {CVE-2023-40283}
• ipv4: igmp: fix refcnt uaf issue when receiving igmp query packet {CVE-2023-6932}
• smb: client: fix OOB in smbCalcSize() {CVE-2023-6606}
• net/sched: sch_hfsc: Ensure inner classes have fsc curve {CVE-2023-4623}
• net/sched: cls_fw: Fix improper refcount update leads to use-after-free {CVE-2023-3776}
• vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF {CVE-2023-3567}
• relayfs: fix out-of-bounds access in relay_file_read {CVE-2023-3268}
• btrfs: unset reloc control if transaction commit fails in prepare_to_relocate() {CVE-2023-3111}
• xirc2ps_cs: Fix use after free bug in xirc2ps_detach {CVE-2023-1670}
• Bluetooth: L2CAP: Fix u8 overflow {CVE-2022-45934}
• Bluetooth: L2CAP: Fix accepting connection request for invalid SPSM {CVE-2022-42896}
• tcp: Fix data races around icsk->icsk_af_ops. {CVE-2022-3566}
• ipv6: use prandom_u32() for ID generation {CVE-2021-45485}

• Bluetooth: L2CAP: Fix use-after-free in l2cap_sock_ready_cb {CVE-2023-40283}
• ipv4: igmp: fix refcnt uaf issue when receiving igmp query packet {CVE-2023-6932}
• smb: client: fix OOB in smbCalcSize() {CVE-2023-6606}
• net/sched: sch_hfsc: Ensure inner classes have fsc curve {CVE-2023-4623}
• net/sched: cls_fw: Fix improper refcount update leads to use-after-free {CVE-2023-3776}
• vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF {CVE-2023-3567}
• relayfs: fix out-of-bounds access in relay_file_read {CVE-2023-3268}
• btrfs: unset reloc control if transaction commit fails in prepare_to_relocate() {CVE-2023-3111}
• xirc2ps_cs: Fix use after free bug in xirc2ps_detach {CVE-2023-1670}
• Bluetooth: L2CAP: Fix u8 overflow {CVE-2022-45934}
• Bluetooth: L2CAP: Fix accepting connection request for invalid SPSM {CVE-2022-42896}
• tcp: Fix data races around icsk->icsk_af_ops. {CVE-2022-3566}
• ipv6: use prandom_u32() for ID generation {CVE-2021-45485}

• Bluetooth: L2CAP: Fix use-after-free in l2cap_sock_ready_cb {CVE-2023-40283}
• ipv4: igmp: fix refcnt uaf issue when receiving igmp query packet {CVE-2023-6932}
• smb: client: fix OOB in smbCalcSize() {CVE-2023-6606}
• net/sched: sch_hfsc: Ensure inner classes have fsc curve {CVE-2023-4623}
• net/sched: cls_fw: Fix improper refcount update leads to use-after-free {CVE-2023-3776}
• vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF {CVE-2023-3567}
• relayfs: fix out-of-bounds access in relay_file_read {CVE-2023-3268}
• btrfs: unset reloc control if transaction commit fails in prepare_to_relocate() {CVE-2023-3111}
• xirc2ps_cs: Fix use after free bug in xirc2ps_detach {CVE-2023-1670}
• Bluetooth: L2CAP: Fix u8 overflow {CVE-2022-45934}
• Bluetooth: L2CAP: Fix accepting connection request for invalid SPSM {CVE-2022-42896}
• tcp: Fix data races around icsk->icsk_af_ops. {CVE-2022-3566}
• ipv6: use prandom_u32() for ID generation {CVE-2021-45485}

• Bluetooth: L2CAP: Fix use-after-free in l2cap_sock_ready_cb {CVE-2023-40283}
• ipv4: igmp: fix refcnt uaf issue when receiving igmp query packet {CVE-2023-6932}
• smb: client: fix OOB in smbCalcSize() {CVE-2023-6606}
• net/sched: sch_hfsc: Ensure inner classes have fsc curve {CVE-2023-4623}
• net/sched: cls_fw: Fix improper refcount update leads to use-after-free {CVE-2023-3776}
• vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF {CVE-2023-3567}
• relayfs: fix out-of-bounds access in relay_file_read {CVE-2023-3268}
• btrfs: unset reloc control if transaction commit fails in prepare_to_relocate() {CVE-2023-3111}
• xirc2ps_cs: Fix use after free bug in xirc2ps_detach {CVE-2023-1670}
• Bluetooth: L2CAP: Fix u8 overflow {CVE-2022-45934}
• Bluetooth: L2CAP: Fix accepting connection request for invalid SPSM {CVE-2022-42896}
• tcp: Fix data races around icsk->icsk_af_ops. {CVE-2022-3566}
• ipv6: use prandom_u32() for ID generation {CVE-2021-45485}