CVE-2022-20572

The Linux Kernel, the operating system core itself.

Security Fix(es):

In (TBD) of (TBD), there is a possible way to corrupt kernel memory 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.Product: AndroidVersions: Android kernelAndroid ID: A-220738351References: Upstream kernel(CVE-2022-20568)

In verity_target of dm-verity-target.c, there is a possible way to modify read-only files due to a missing permission check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-234475629References: Upstream kernel(CVE-2022-20572)

The Linux Kernel, the operating system core itself.

Security Fix(es):

In (TBD) of (TBD), there is a possible way to corrupt kernel memory 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.Product: AndroidVersions: Android kernelAndroid ID: A-220738351References: Upstream kernel(CVE-2022-20568)

In verity_target of dm-verity-target.c, there is a possible way to modify read-only files due to a missing permission check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-234475629References: Upstream kernel(CVE-2022-20572)

In drivers/media/dvb-core/dmxdev.c in the Linux kernel through 5.19.10, there is a use-after-free caused by refcount races, affecting dvb_demux_open and dvb_dmxdev_release.(CVE-2022-41218)

An issue was discovered in the Linux kernel through 5.16-rc6. malidp_crtc_reset in drivers/gpu/drm/arm/malidp_crtc.c lacks check of the return value of kzalloc() and will cause the null pointer dereference.(CVE-2022-3115)

An issue was discovered in the Linux kernel through 5.16-rc6. free_charger_irq() in drivers/power/supply/wm8350_power.c lacks free of WM8350_IRQ_CHG_FAST_RDY, which is registered in wm8350_init_charger().(CVE-2022-3111)

An issue was discovered in the Linux kernel through 5.16-rc6. kfd_parse_subtype_iolink in drivers/gpu/drm/amd/amdkfd/kfd_crat.c lacks check of the return value of kmemdup().(CVE-2022-3108)

Security Fix(es):

A use-after-free flaw was found in Linux kernel before 5.19.2. This issue occurs in cmd_hdl_filter in drivers/staging/rtl8712/rtl8712_cmd.c, allowing an attacker to launch a local denial of service attack and gain escalation of privileges.(CVE-2022-4095)

There are null-ptr-deref vulnerabilities in drivers/net/slip of linux that allow attacker to crash linux kernel by simulating slip network card from user-space of linux.

[Root cause]

When a slip driver is detaching, the slip_close() will act to cleanup necessary resources and sl->tty is set to NULL in slip_close(). Meanwhile, the packet we transmit is blocked, sl_tx_timeout() will be called. Although slip_close() and sl_tx_timeout() use sl->lock to synchronize, we don`t judge whether sl->tty equals to NULL in sl_tx_timeout() and the null pointer dereference bug will happen.

(Thread 1) | (Thread 2) | slip_close() | spin_lock_bh(&sl->lock) | ... ... | sl->tty = NULL //(1) sl_tx_timeout() | spin_unlock_bh(&sl->lock) spin_lock(&sl->lock); | ... | ... tty_chars_in_buffer(sl->tty)| if (tty->ops->..) //(2) | ... | synchronize_rcu()

We set NULL to sl->tty in position (1) and dereference sl->tty in position (2).

------------------------------------------(CVE-2022-41858)

A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service.(CVE-2022-4129)

In (TBD) of (TBD), there is a possible way to corrupt kernel memory 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.Product: AndroidVersions: Android kernelAndroid ID: A-220738351References: Upstream kernel(CVE-2022-20568)

In l2cap_chan_put of l2cap_core, there is a possible use after free due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-165329981References: Upstream kernel(CVE-2022-20566)

Guests can trigger NIC interface reset/abort/crash via netback It is possible for a guest to trigger a NIC interface reset/abort/crash in a Linux based network backend by sending certain kinds of packets. It appears to be an (unwritten?) assumption in the rest of the Linux network stack that packet protocol headers are all contained within the linear section of the SKB and some NICs behave badly if this is not the case. This has been reported to occur with Cisco (enic) and Broadcom NetXtrem II BCM5780 (bnx2x) though it may be an issue with other NICs/drivers as well. In case the frontend is sending requests with split headers, netback will forward those violating above mentioned assumption to the networking core, resulting in said misbehavior.(CVE-2022-3643)

In verity_target of dm-verity-target.c, there is a possible way to modify read-only files due to a missing permission check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-234475629References: Upstream kernel(CVE-2022-20572)

A stack overflow flaw was found in the Linux kernel's SYSCTL subsystem in how a user changes certain kernel parameters and variables. This flaw allows a local user to crash or potentially escalate their privileges on the system.(CVE-2022-4378)

In drivers/media/dvb-core/dmxdev.c in the Linux kernel through 5.19.10, there is a use-after-free caused by refcount races, affecting dvb_demux_open and dvb_dmxdev_release.(CVE-2022-41218)

Guests can trigger deadlock in Linux netback driver…

In verity_target of dm-verity-target.c, there is a possible way to modify read-only files due to a missing permission check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-234475629References: Upstream kernel

• CVE-2022-1198
  • drivers: hamradio: 6pack: fix UAF bug caused by mod_timer()
• Bionic update: upstream stable patchset 2022-03-04 (LP: #1963717) // CVE-2020-36516
  • ipv4: avoid using shared IP generator for connected sockets
• CVE-2022-36879
  • xfrm: xfrm_policy: fix a possible double xfrm_pols_put() in xfrm_bundle_lookup()
• CVE-2022-3061
  • video: fbdev: i740fb: Error out if 'pixclock' equals zero
• CVE-2022-1516
  • net/x25: Fix null-ptr-deref caused by x25_disconnect
• CVE-2022-1205
  • ax25: Fix NULL pointer dereferences in ax25 timers
  • ax25: Fix UAF bugs in ax25 timers
• CVE-2022-2318
  • net: rose: fix UAF bugs caused by timer handler
• CVE-2022-1195
  • hamradio: defer 6pack kfree after unregister_netdev
  • hamradio: defer ax25 kfree after unregister_netdev
  • hamradio: improve the incomplete fix to avoid NPD
• CVE-2022-0494
  • block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern
• CVE-2021-26401
  • x86/speculation: Use generic retpoline by default on AMD
• Bionic update: upstream stable patchset 2022-10-18 (LP: #1993349) // CVE-2022-39188
  • mm: Fix TLB flush for not-first PFNMAP mappings in unmap_region()
• Bionic update: upstream stable patchset 2022-10-06 (LP: #1992112) // CVE-2022-39188
  • mm: Force TLB flush for PFNMAP mappings before unlink_file_vma()
• CVE-2022-45934
  • Bluetooth: L2CAP: Fix u8 overflow
• Bionic update: upstream stable patchset 2022-06-21 (LP: #1979355) // CVE-2022-2991
  • lightnvm: disable the subsystem
• Bionic update: upstream stable patchset 2021-11-02 (LP: #1949512) // CVE-2021-4203
  • af_unix: fix races in sk_peer_pid and sk_peer_cred accesses
• Bionic update: upstream stable patchset 2022-04-26 (LP: #1970479) // CVE-2021-3772
  • sctp: fix the processing for INIT chunk
  • sctp: fix the processing for INIT_ACK chunk
• Bionic update: upstream stable patchset 2021-12-03 (LP: #1953202) // CVE-2021-3772
  • sctp: use init_tag from inithdr for ABORT chunk
  • sctp: fix the processing for COOKIE_ECHO chunk
  • sctp: add vtag check in sctp_sf_violation
  • sctp: add vtag check in sctp_sf_do_8_5_1_E_sa
  • sctp: add vtag check in sctp_sf_ootb
• CVE-2022-3303
  • ALSA: pcm: oss: Fix race at SNDCTL_DSP_SYNC
• Bionic update: upstream stable patchset 2022-09-21 (LP: #1990434) // CVE-2022-1462
  • tty: extract tty_flip_buffer_commit() from tty_flip_buffer_push()
  • tty: use new tty_insert_flip_string_and_push_buffer() in pty_write()
• CVE-2022-1462
  • tty: fix deadlock caused by calling printk() under tty_port->lock
• Bionic update: upstream stable patchset 2020-11-10 (LP: #1903768) // CVE-2022-1462
  • pty: do tty_flip_buffer_push without port->lock in pty_write
• Bionic update: upstream stable patchset 2019-02-08 (LP: #1815234) // CVE-2022-1462
  • tty: Fix data race in tty_insert_flip_string_fixed_flag
• Bionic update: upstream stable patchset 2022-10-18 (LP: #1993349) // CVE-2022-4662
  • USB: core: Prevent nested device-reset calls
• Bionic update: upstream stable patchset 2022-03-04 (LP: #1963717) // CVE-2022-0617
  • udf: Restore i_lenAlloc when inode expansion fails
  • udf: Fix NULL ptr deref when converting from inline format
• Bionic update: upstream stable patchset 2022-04-26 (LP: #1970479) // CVE-2022-1016
  • netfilter: nf_tables: initialize registers in nft_do_chain()
• Bionic update: upstream stable patchset 2022-05-17 (LP: #1973831) // CVE-2022-2380
  • video: fbdev: sm712fb: Fix crash in smtcfb_read()
• Bionic update: upstream stable patchset 2022-05-17 (LP: #1973831) // CVE-2022-3111
  • power: supply: wm8350-power: Add missing free in free_charger_irq
• CVE-2022-3628
  • wifi: brcmfmac: Fix potential buffer overflow in brcmf_fweh_event_worker()
• Bionic update:…

• CVE-2022-1198
  • drivers: hamradio: 6pack: fix UAF bug caused by mod_timer()
• Bionic update: upstream stable patchset 2022-03-04 (LP: #1963717) // CVE-2020-36516
  • ipv4: avoid using shared IP generator for connected sockets
• CVE-2022-36879
  • xfrm: xfrm_policy: fix a possible double xfrm_pols_put() in xfrm_bundle_lookup()
• CVE-2022-3061
  • video: fbdev: i740fb: Error out if 'pixclock' equals zero
• CVE-2022-1516
  • net/x25: Fix null-ptr-deref caused by x25_disconnect
• CVE-2022-1205
  • ax25: Fix NULL pointer dereferences in ax25 timers
  • ax25: Fix UAF bugs in ax25 timers
• CVE-2022-2318
  • net: rose: fix UAF bugs caused by timer handler
• CVE-2022-1195
  • hamradio: defer 6pack kfree after unregister_netdev
  • hamradio: defer ax25 kfree after unregister_netdev
  • hamradio: improve the incomplete fix to avoid NPD
• CVE-2022-0494
  • block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern
• CVE-2021-26401
  • x86/speculation: Use generic retpoline by default on AMD
• Bionic update: upstream stable patchset 2022-10-18 (LP: #1993349) // CVE-2022-39188
  • mm: Fix TLB flush for not-first PFNMAP mappings in unmap_region()
• Bionic update: upstream stable patchset 2022-10-06 (LP: #1992112) // CVE-2022-39188
  • mm: Force TLB flush for PFNMAP mappings before unlink_file_vma()
• CVE-2022-45934
  • Bluetooth: L2CAP: Fix u8 overflow
• Bionic update: upstream stable patchset 2022-06-21 (LP: #1979355) // CVE-2022-2991
  • lightnvm: disable the subsystem
• Bionic update: upstream stable patchset 2021-11-02 (LP: #1949512) // CVE-2021-4203
  • af_unix: fix races in sk_peer_pid and sk_peer_cred accesses
• Bionic update: upstream stable patchset 2022-04-26 (LP: #1970479) // CVE-2021-3772
  • sctp: fix the processing for INIT chunk
  • sctp: fix the processing for INIT_ACK chunk
• Bionic update: upstream stable patchset 2021-12-03 (LP: #1953202) // CVE-2021-3772
  • sctp: use init_tag from inithdr for ABORT chunk
  • sctp: fix the processing for COOKIE_ECHO chunk
  • sctp: add vtag check in sctp_sf_violation
  • sctp: add vtag check in sctp_sf_do_8_5_1_E_sa
  • sctp: add vtag check in sctp_sf_ootb
• CVE-2022-3303
  • ALSA: pcm: oss: Fix race at SNDCTL_DSP_SYNC
• Bionic update: upstream stable patchset 2022-09-21 (LP: #1990434) // CVE-2022-1462
  • tty: extract tty_flip_buffer_commit() from tty_flip_buffer_push()
  • tty: use new tty_insert_flip_string_and_push_buffer() in pty_write()
• CVE-2022-1462
  • tty: fix deadlock caused by calling printk() under tty_port->lock
• Bionic update: upstream stable patchset 2020-11-10 (LP: #1903768) // CVE-2022-1462
  • pty: do tty_flip_buffer_push without port->lock in pty_write
• Bionic update: upstream stable patchset 2019-02-08 (LP: #1815234) // CVE-2022-1462
  • tty: Fix data race in tty_insert_flip_string_fixed_flag
• Bionic update: upstream stable patchset 2022-10-18 (LP: #1993349) // CVE-2022-4662
  • USB: core: Prevent nested device-reset calls
• Bionic update: upstream stable patchset 2022-03-04 (LP: #1963717) // CVE-2022-0617
  • udf: Restore i_lenAlloc when inode expansion fails
  • udf: Fix NULL ptr deref when converting from inline format
• Bionic update: upstream stable patchset 2022-04-26 (LP: #1970479) // CVE-2022-1016
  • netfilter: nf_tables: initialize registers in nft_do_chain()
• Bionic update: upstream stable patchset 2022-05-17 (LP: #1973831) // CVE-2022-2380
  • video: fbdev: sm712fb: Fix crash in smtcfb_read()
• Bionic update: upstream stable patchset 2022-05-17 (LP: #1973831) // CVE-2022-3111
  • power: supply: wm8350-power: Add missing free in free_charger_irq
• CVE-2022-3628
  • wifi: brcmfmac: Fix potential buffer overflow in brcmf_fweh_event_worker()
• Bionic update:…

• ALSA: pcm: Fix races among concurrent prealloc proc writes {CVE-2022-1048}
• ALSA: pcm: Fix races among concurrent prepare and hw_params/hw_free calls {CVE-2022-1048}
• ALSA: pcm: Fix races among concurrent read/write and buffer changes {CVE-2022-1048}
• ALSA: pcm: Fix races among concurrent hw_params and hw_free calls {CVE-2022-1048}
• x86/elf: Disable automatic READ_IMPLIES_EXEC on 64-bit {CVE-2022-25265}
• x86/elf: Split READ_IMPLIES_EXEC from executable PT_GNU_STACK {CVE-2022-25265}
• x86/elf: Add table to document READ_IMPLIES_EXEC {CVE-2022-25265}
• drm/i915: fix TLB invalidation for Gen12 video and compute engines {CVE-2022-4139}
• drm/i915: Flush TLBs before releasing backing store {CVE-2022-0330}
• xfs: fix up non-directory creation in SGID directories {CVE-2021-4037}
• tcp: Fix data races around icsk->icsk_af_ops. {CVE-2022-3566}
• ipv6: Fix data races around sk->sk_prot. {CVE-2022-3567}
• ipv6: annotate some data-races around sk->sk_prot {CVE-2022-3567}
• ipv6: use indirect call wrappers for {tcp, udpv6}_{recv, send}msg() {CVE-2022-3567}
• netfilter: nf_tables: deactivate anonymous set from preparation phase {CVE-2023-32233}
• netfilter: nf_tables: bogus EBUSY when deleting set after flush
• media: dmxdev: fix UAF when dvb_register_device() fails {CVE-2022-41218}
• l2tp: Don't sleep and disable BH under writer-side sk_callback_lock {CVE-2022-4129}
• l2tp: Serialize access to sk_user_data with sk_callback_lock {CVE-2022-4129}
• net: fix a concurrency bug in l2tp_tunnel_register() {CVE-2022-4129}
• Bluetooth: L2CAP: Fix memory leak in vhci_write {CVE-2022-3619}
• Bluetooth: L2CAP: Fix handling fragmented length
• wifi: brcmfmac: Fix potential buffer overflow in brcmf_fweh_event_worker() {CVE-2022-3628}
• wifi: cfg80211: avoid nontransmitted BSS list corruption {CVE-2022-42721}
• cfg80211: scan: fix RCU in cfg80211_add_nontrans_list()
• wifi: cfg80211: fix BSS refcounting bugs {CVE-2022-42720}
• cfg80211: hold bss_lock while updating nontrans_list
• ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF {CVE-2023-0266}
• ALSA: control: Drop superfluous snd_power_wait() calls
• ALSA: control: Track in-flight control read/write/tlv accesses
• ALSA: control - introduce snd_ctl_notify_one() helper
• Bluetooth: L2CAP: Fix use-after-free caused by l2cap_reassemble_sdu {CVE-2022-3564}
• netfilter: nf_conntrack_irc: Tighten matching on DCC message {CVE-2022-2663}
• netfilter: nf_conntrack_irc: Fix forged IP logic {CVE-2022-2663}
• KVM: x86: Avoid theoretical NULL pointer dereference in kvm_irq_delivery_to_apic_fast() {CVE-2022-2153}
• KVM: Add infrastructure and macro to mark VM as bugged
• KVM: x86/mmu: fix NULL pointer dereference on guest INVPCID {CVE-2022-1789}
• tcp/udp: Fix memory leak in ipv6_renew_options(). {CVE-2022-3524}
• proc: proc_skip_spaces() shouldn't think it is working on C strings {CVE-2022-4378}
• proc: avoid integer type confusion in get_proc_long {CVE-2022-4378}
• wifi: mac80211: fix crash in beacon protection for P2P-device {CVE-2022-42722}
• net: sched: cbq: dont intepret cls results when asked to drop {CVE-2023-23454}
• ipv6: raw: Deduct extension header length in rawv6_push_pending_frames {CVE-2023-0394}
• net: sched: disallow noqueue for qdisc classes {CVE-2022-47929}
• wifi: cfg80211: fix u8 overflow in cfg80211_update_notlisted_nontrans() {CVE-2022-41674}
• af_key: Do not call xfrm_probe_algs in parallel {CVE-2022-3028}
• dm verity: set DM_TARGET_IMMUTABLE feature flag {CVE-2022-20572}

• ALSA: pcm: Fix races among concurrent prealloc proc writes {CVE-2022-1048}
• ALSA: pcm: Fix races among concurrent prepare and hw_params/hw_free calls {CVE-2022-1048}
• ALSA: pcm: Fix races among concurrent read/write and buffer changes {CVE-2022-1048}
• ALSA: pcm: Fix races among concurrent hw_params and hw_free calls {CVE-2022-1048}
• x86/elf: Disable automatic READ_IMPLIES_EXEC on 64-bit {CVE-2022-25265}
• x86/elf: Split READ_IMPLIES_EXEC from executable PT_GNU_STACK {CVE-2022-25265}
• x86/elf: Add table to document READ_IMPLIES_EXEC {CVE-2022-25265}
• KVM: SEV-ES: fix another issue with string I/O VMGEXITs {CVE-2021-4093}
• KVM: SEV-ES: go over the sev_pio_data buffer in multiple passes if needed {CVE-2021-4093}
• KVM: SEV-ES: keep INS functions together {CVE-2021-4093}
• KVM: x86: remove unnecessary arguments from complete_emulator_pio_in {CVE-2021-4093}
• KVM: x86: split the two parts of emulator_pio_in {CVE-2021-4093}
• KVM: x86: leave vcpu->arch.pio.count alone in emulator_pio_in_out {CVE-2021-4093}
• KVM: SEV-ES: clean up kvm_sev_es_ins/outs {CVE-2021-4093}
• KVM: SEV-ES: rename guest_ins_data to sev_pio_data {CVE-2021-4093}
• KVM: SEV-ES: fix length of string I/O {CVE-2021-4093}
• drm/i915: fix TLB invalidation for Gen12 video and compute engines {CVE-2022-4139}
• drm/i915: Flush TLBs before releasing backing store {CVE-2022-0330}
• xfs: fix up non-directory creation in SGID directories {CVE-2021-4037}
• tcp: Fix data races around icsk->icsk_af_ops. {CVE-2022-3566}
• ipv6: Fix data races around sk->sk_prot. {CVE-2022-3567}
• ipv6: annotate some data-races around sk->sk_prot {CVE-2022-3567}
• ipv6: use indirect call wrappers for {tcp, udpv6}_{recv, send}msg() {CVE-2022-3567}
• netfilter: nf_tables: deactivate anonymous set from preparation phase {CVE-2023-32233}
• netfilter: nf_tables: bogus EBUSY when deleting set after flush
• media: dmxdev: fix UAF when dvb_register_device() fails {CVE-2022-41218}
• l2tp: Don't sleep and disable BH under writer-side sk_callback_lock {CVE-2022-4129}
• l2tp: Serialize access to sk_user_data with sk_callback_lock {CVE-2022-4129}
• net: fix a concurrency bug in l2tp_tunnel_register() {CVE-2022-4129}
• Bluetooth: L2CAP: Fix memory leak in vhci_write {CVE-2022-3619}
• Bluetooth: L2CAP: Fix handling fragmented length
• wifi: brcmfmac: Fix potential buffer overflow in brcmf_fweh_event_worker() {CVE-2022-3628}
• wifi: cfg80211: avoid nontransmitted BSS list corruption {CVE-2022-42721}
• cfg80211: scan: fix RCU in cfg80211_add_nontrans_list()
• wifi: cfg80211: fix BSS refcounting bugs {CVE-2022-42720}
• cfg80211: hold bss_lock while updating nontrans_list
• ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF {CVE-2023-0266}
• ALSA: control: Drop superfluous snd_power_wait() calls
• ALSA: control: Track in-flight control read/write/tlv accesses
• Bluetooth: L2CAP: Fix use-after-free caused by l2cap_reassemble_sdu {CVE-2022-3564}
• netfilter: nf_conntrack_irc: Tighten matching on DCC message {CVE-2022-2663}
• netfilter: nf_conntrack_irc: Fix forged IP logic {CVE-2022-2663}
• KVM: x86: Avoid theoretical NULL pointer dereference in kvm_irq_delivery_to_apic_fast() {CVE-2022-2153}
• KVM: Add infrastructure and macro to mark VM as bugged
• KVM: x86/mmu: fix NULL pointer dereference on guest INVPCID {CVE-2022-1789}
• tcp/udp: Fix memory leak in ipv6_renew_options(). {CVE-2022-3524}
• proc: proc_skip_spaces() shouldn't think it is working on C strings {CVE-2022-4378}
• proc: avoid integer type confusion in get_proc_long {CVE-2022-4378}
• wifi: mac80211: fix crash in beacon protection for P2P-device {CVE-2022-42722}
• net: sched: cbq: dont intepret cls results when asked to drop {CVE-2023-23454}
• ipv6: raw: Deduct extension header length in rawv6_push_pending_frames {CVE-2023-0394}
• net: sched: disallow noqueue for qdisc classes {CVE-2022-47929}
• wifi: cfg80211: fix u8 overflow in cfg80211_update_notlisted_nontrans() {CVE-2022-41674}
• af_key: Do not call xfrm_probe_algs in…

In verity_target of dm-verity-target.c, there is a possible way to modify read-only files due to a missing permission check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP implementation in the Linux kernel did not properly handle IPID assignment. A remote attacker could use this to cause a denial of service (connection termination) or inject forged data. (CVE-2020-36516)

Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk, Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre Variant 2 mitigations for AMD processors on Linux were insufficient in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-26401)

Jürgen Groß discovered that the Xen subsystem within the Linux kernel did not adequately limit the number of events driver domains (unprivileged PV backends) could send to other guest VMs. An attacker in a driver domain could use this to cause a denial of service in other guest VMs. (CVE-2021-28712, CVE-2021-28713)

Wolfgang Frisch discovered that the ext4 file system implementation in the Linux kernel contained an integer overflow when handling metadata inode extents. An attacker could use this to construct a malicious ext4 file system image that, when mounted, could cause a denial of service (system crash). (CVE-2021-3428)

It was discovered that the IEEE 802.15.4 wireless network subsystem in the Linux kernel did not properly handle certain error conditions, leading to a null pointer dereference vulnerability. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-3659)

It was discovered that the System V IPC implementation in the Linux kernel did not properly handle large shared memory counts. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3669)

Alois Wohlschlager discovered that the overlay file system in the Linux kernel did not restrict private clones in some situations. An attacker could use this to expose sensitive information. (CVE-2021-3732)

It was discovered that the SCTP protocol implementation in the Linux kernel did not properly verify VTAGs in some situations. A remote attacker could possibly use this to cause a denial of service (connection disassociation). (CVE-2021-3772)

It was discovered that the btrfs file system implementation in the Linux kernel did not properly handle locking in certain error conditions. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2021-4149)

Jann Horn discovered that the socket subsystem in the Linux kernel contained a race condition when handling listen() and connect() operations, leading to a read-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2021-4203)

It was discovered that the file system quotas implementation in the Linux kernel did not properly validate the quota block number. An attacker could use this to construct a malicious file system image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2021-45868)

Zhihua Yao discovered that the MOXART SD/MMC driver in the Linux kernel did not properly handle device removal, leading to a use-after-free vulnerability. A physically proximate attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-0487)

It was discovered that the block layer subsystem in the Linux kernel did not properly initialize memory in some situations. A privileged local attacker could use this to expose sensitive information (kernel memory). (CVE-2022-0494)

It was discovered that the UDF file system implementation in the Linux kernel could attempt to dereference a null pointer in some situations. An attacker could use this to construct a malicious UDF image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2022-0617)

David Bouman discovered that the netfilter subsystem in the Linux kernel did not initialize memory in some…

Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP implementation in the Linux kernel did not properly handle IPID assignment. A remote attacker could use this to cause a denial of service (connection termination) or inject forged data. (CVE-2020-36516)

Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk, Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre Variant 2 mitigations for AMD processors on Linux were insufficient in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-26401)

Jürgen Groß discovered that the Xen subsystem within the Linux kernel did not adequately limit the number of events driver domains (unprivileged PV backends) could send to other guest VMs. An attacker in a driver domain could use this to cause a denial of service in other guest VMs. (CVE-2021-28712, CVE-2021-28713)

Wolfgang Frisch discovered that the ext4 file system implementation in the Linux kernel contained an integer overflow when handling metadata inode extents. An attacker could use this to construct a malicious ext4 file system image that, when mounted, could cause a denial of service (system crash). (CVE-2021-3428)

It was discovered that the IEEE 802.15.4 wireless network subsystem in the Linux kernel did not properly handle certain error conditions, leading to a null pointer dereference vulnerability. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-3659)

It was discovered that the System V IPC implementation in the Linux kernel did not properly handle large shared memory counts. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3669)

Alois Wohlschlager discovered that the overlay file system in the Linux kernel did not restrict private clones in some situations. An attacker could use this to expose sensitive information. (CVE-2021-3732)

It was discovered that the SCTP protocol implementation in the Linux kernel did not properly verify VTAGs in some situations. A remote attacker could possibly use this to cause a denial of service (connection disassociation). (CVE-2021-3772)

It was discovered that the btrfs file system implementation in the Linux kernel did not properly handle locking in certain error conditions. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2021-4149)

Jann Horn discovered that the socket subsystem in the Linux kernel contained a race condition when handling listen() and connect() operations, leading to a read-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2021-4203)

It was discovered that the file system quotas implementation in the Linux kernel did not properly validate the quota block number. An attacker could use this to construct a malicious file system image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2021-45868)

Zhihua Yao discovered that the MOXART SD/MMC driver in the Linux kernel did not properly handle device removal, leading to a use-after-free vulnerability. A physically proximate attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-0487)

It was discovered that the block layer subsystem in the Linux kernel did not properly initialize memory in some situations. A privileged local attacker could use this to expose sensitive information (kernel memory). (CVE-2022-0494)

It was discovered that the UDF file system implementation in the Linux kernel could attempt to dereference a null pointer in some situations. An attacker could use this to construct a malicious UDF image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2022-0617)

David Bouman discovered that the netfilter subsystem in the Linux kernel did not initialize memory in some…

Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP implementation in the Linux kernel did not properly handle IPID assignment. A remote attacker could use this to cause a denial of service (connection termination) or inject forged data. (CVE-2020-36516)

Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk, Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre Variant 2 mitigations for AMD processors on Linux were insufficient in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-26401)

Jürgen Groß discovered that the Xen subsystem within the Linux kernel did not adequately limit the number of events driver domains (unprivileged PV backends) could send to other guest VMs. An attacker in a driver domain could use this to cause a denial of service in other guest VMs. (CVE-2021-28711, CVE-2021-28712, CVE-2021-28713)

Wolfgang Frisch discovered that the ext4 file system implementation in the Linux kernel contained an integer overflow when handling metadata inode extents. An attacker could use this to construct a malicious ext4 file system image that, when mounted, could cause a denial of service (system crash). (CVE-2021-3428)

It was discovered that the IEEE 802.15.4 wireless network subsystem in the Linux kernel did not properly handle certain error conditions, leading to a null pointer dereference vulnerability. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-3659)

It was discovered that the System V IPC implementation in the Linux kernel did not properly handle large shared memory counts. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3669)

Alois Wohlschlager discovered that the overlay file system in the Linux kernel did not restrict private clones in some situations. An attacker could use this to expose sensitive information. (CVE-2021-3732)

It was discovered that the SCTP protocol implementation in the Linux kernel did not properly verify VTAGs in some situations. A remote attacker could possibly use this to cause a denial of service (connection disassociation). (CVE-2021-3772)

It was discovered that the btrfs file system implementation in the Linux kernel did not properly handle locking in certain error conditions. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2021-4149)

Jann Horn discovered that the socket subsystem in the Linux kernel contained a race condition when handling listen() and connect() operations, leading to a read-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2021-4203)

It was discovered that the file system quotas implementation in the Linux kernel did not properly validate the quota block number. An attacker could use this to construct a malicious file system image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2021-45868)

Zhihua Yao discovered that the MOXART SD/MMC driver in the Linux kernel did not properly handle device removal, leading to a use-after-free vulnerability. A physically proximate attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-0487)

It was discovered that the block layer subsystem in the Linux kernel did not properly initialize memory in some situations. A privileged local attacker could use this to expose sensitive information (kernel memory). (CVE-2022-0494)

It was discovered that the UDF file system implementation in the Linux kernel could attempt to dereference a null pointer in some situations. An attacker could use this to construct a malicious UDF image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2022-0617)

David Bouman discovered that the netfilter subsystem in the Linux kernel did not initialize memory in…