CVE-2022-23825

Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type potentially leading to information disclosure.

Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type potentially leading to information disclosure.

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

Security Fix(es):

• A use-after-free in cls_route filter implementation may lead to privilege escalation (CVE-2022-2588)

• Information leak in scsi_ioctl() (CVE-2022-0494)

• A kernel-info-leak issue in pfkey_register (CVE-2022-1353)

• RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-23816, CVE-2022-29900)

• Branch Type Confusion (non-retbleed) (CVE-2022-23825)

• RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-29901)

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):

• Add s390_iommu_aperture kernel parameter (BZ#2081324)

• Blackscreen and hangup after resume from hibernate or S3 with DFGX WX3200 (BZ#2091065)

• Update NVME subsystem with bug fixes and minor changes (BZ#2106017)

• Fix parsing of nw_proto for IPv6 fragments (BZ#2106703)

• "vmcore failed, _exitcode:139" error observed while capturing vmcore during fadump after memory remove. incomplete vmcore is captured. (BZ#2107488)

• 'disable_policy' is ignored for addresses configured on a down interface (BZ#2109971)

• Backport request for new cpufreq.default_governor kernel command line parameter (BZ#2109996)

• Panics in mpt3sas mpt3sas_halt_firmware() if mpt3sas_fwfault_debug=1 enabled when poweroff issued to server (BZ#2111140)

• IOMMU/DMA update for 8.7 (BZ#2111692)

• Update Broadcom Emulex lpfc driver for Rocky Linux8.7 with bug fixes (14.0.0.13) (BZ#2112103)

• Incorrect Socket(s) & "Core(s) per socket" reported by lscpu command. (BZ#2112820)

• Panic in ch_release() due to NULL ch->device pointer, backport upstream fix (BZ#2115965)

• pyverbs-tests fail over qede IW HCAs on "test_query_rc_qp" (tests.test_qp.QPTest) (BZ#2119122)

• qedi shutdown handler hangs upon reboot (BZ#2119847)

• cache link_info for ethtool (BZ#2120197)

• Important iavf bug fixes (BZ#2120225)

• Hibernate crash with Aquantia 2.5/5 Gb LAN card (BZ#2124966)

• While using PTimekeeper the qede driver produces excessive log messages (BZ#2125477)

• general protection fault handling rpc_xprt.timer (BZ#2126184)

• Not enough device MSI-X vectors (BZ#2126482)

• Atlantic driver panic on wakeup after hybernate (BZ#2127845)

• Memory leak in vxlan_xmit_one (BZ#2131255)

• Missing hybernate/resume fixes (BZ#2131936)

Enhancement(s):

• Update smartpqi driver to latest upstream Second Set of Patches (BZ#2112354)

• qed/qede/qedr - driver updates to latest upstream (BZ#2120611)

• Update qedi driver to latest upstream (BZ#2120612)

• Update qedf driver to latest upstream (BZ#2120613)

• Include the support for new NVIDIA Mobile GFX GA103 on ADL Gen Laptops (BZ#2127122)

• Need to enable hpilo to support new HPE RL300 Gen11 for ARM (aarch64) (BZ#2129923)

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: a use-after-free in cls_route filter implementation may lead to privilege escalation (CVE-2022-2588)

• kernel: information leak in scsi_ioctl() (CVE-2022-0494)

• Kernel: A kernel-info-leak issue in pfkey_register (CVE-2022-1353)

• hw: cpu: AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-23816, CVE-2022-29900)

• hw: cpu: AMD: Branch Type Confusion (non-retbleed) (CVE-2022-23825)

• hw: cpu: Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-29901)

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):

• [Rocky Linux8-rt] BUG: using __this_cpu_add() in preemptible [00000000] - caller is __mod_memcg_lruvec_state+0x69/0x1c0 (BZ#2122600)

• The latest Rocky Linux 8.6.z4 kernel changes need to be merged into the RT source tree to keep source parity between the two kernels. (BZ#2125396)

Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type potentially leading to information disclosure.

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

Security Fix(es):

• A use-after-free in cls_route filter implementation may lead to privilege escalation (CVE-2022-2588)
• Information leak in scsi_ioctl() (CVE-2022-0494)
• A kernel-info-leak issue in pfkey_register (CVE-2022-1353)
• RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-23816, CVE-2022-29900)
• Branch Type Confusion (non-retbleed) (CVE-2022-23825)
• RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-29901)

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):

• Add s390_iommu_aperture kernel parameter (BZ#2081324)
• Blackscreen and hangup after resume from hibernate or S3 with DFGX WX3200 (BZ#2091065)
• Update NVME subsystem with bug fixes and minor changes (BZ#2106017)
• Fix parsing of nw_proto for IPv6 fragments (BZ#2106703)
• "vmcore failed, _exitcode:139" error observed while capturing vmcore during fadump after memory remove. incomplete vmcore is captured. (BZ#2107488)
• 'disable_policy' is ignored for addresses configured on a down interface (BZ#2109971)
• Backport request for new cpufreq.default_governor kernel command line parameter (BZ#2109996)
• Panics in mpt3sas mpt3sas_halt_firmware() if mpt3sas_fwfault_debug=1 enabled when poweroff issued to server (BZ#2111140)
• IOMMU/DMA update for 8.7 (BZ#2111692)
• Update Broadcom Emulex lpfc driver for AlmaLinux8.7 with bug fixes (14.0.0.13) (BZ#2112103)
• Incorrect Socket(s) & "Core(s) per socket" reported by lscpu command. (BZ#2112820)
• Panic in ch_release() due to NULL ch->device pointer, backport upstream fix (BZ#2115965)
• pyverbs-tests fail over qede IW HCAs on "test_query_rc_qp" (tests.test_qp.QPTest) (BZ#2119122)
• qedi shutdown handler hangs upon reboot (BZ#2119847)
• cache link_info for ethtool (BZ#2120197)
• Important iavf bug fixes (BZ#2120225)
• Hibernate crash with Aquantia 2.5/5 Gb LAN card (BZ#2124966)
• While using PTimekeeper the qede driver produces excessive log messages (BZ#2125477)
• general protection fault handling rpc_xprt.timer (BZ#2126184)
• Not enough device MSI-X vectors (BZ#2126482)
• Atlantic driver panic on wakeup after hybernate (BZ#2127845)
• Memory leak in vxlan_xmit_one (BZ#2131255)
• Missing hybernate/resume fixes (BZ#2131936)

Enhancement(s):

• Update smartpqi driver to latest upstream Second Set of Patches (BZ#2112354)
• qed/qede/qedr - driver updates to latest upstream (BZ#2120611)
• Update qedi driver to latest upstream (BZ#2120612)
• Update qedf driver to latest upstream (BZ#2120613)
• Include the support for new NVIDIA Mobile GFX GA103 on ADL Gen Laptops (BZ#2127122)
• Need to enable hpilo to support new HPE RL300 Gen11 for ARM (aarch64) (BZ#2129923)

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: a use-after-free in cls_route filter implementation may lead to privilege escalation (CVE-2022-2588)
• kernel: information leak in scsi_ioctl() (CVE-2022-0494)
• Kernel: A kernel-info-leak issue in pfkey_register (CVE-2022-1353)
• hw: cpu: AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-23816, CVE-2022-29900)
• hw: cpu: AMD: Branch Type Confusion (non-retbleed) (CVE-2022-23825)
• hw: cpu: Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-29901)

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):

• [almalinux8-rt] BUG: using __this_cpu_add() in preemptible [00000000] - caller is __mod_memcg_lruvec_state+0x69/0x1c0 (BZ#2122600)
• The latest AlmaLinux 8.6.z4 kernel changes need to be merged into the RT source tree to keep source parity between the two kernels. (BZ#2125396)

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

Security Fix(es):

• off-path attacker may inject data or terminate victim's TCP session (CVE-2020-36516)
• use-after-free vulnerability in function sco_sock_sendmsg() (CVE-2021-3640)
• smb2_ioctl_query_info NULL pointer dereference (CVE-2022-0168)
• NULL pointer dereference in udf_expand_file_adinicbdue() during writeback (CVE-2022-0617)
• swiotlb information leak with DMA_FROM_DEVICE (CVE-2022-0854)
• uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM (CVE-2022-1016)
• race condition in snd_pcm_hw_free leading to use-after-free (CVE-2022-1048)
• use-after-free and memory errors in ext4 when mounting and operating on a corrupted image (CVE-2022-1184)
• concurrency use-after-free between drm_setmaster_ioctl and drm_mode_getresources (CVE-2022-1280)
• kernel info leak issue in pfkey_register (CVE-2022-1353)
• use-after-free in ath9k_htc_probe_device() could cause an escalation of privileges (CVE-2022-1679)
• NULL pointer dereference in x86_emulate_insn may lead to DoS (CVE-2022-1852)
• fanotify misuses fd_install() which could lead to use-after-free (CVE-2022-1998)
• nf_tables cross-table potential use-after-free may lead to local privilege escalation (CVE-2022-2586)
• openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size() (CVE-2022-2639)
• slab-out-of-bounds access in packet_recvmsg() (CVE-2022-20368)
• incomplete clean-up of multi-core shared buffers (aka SBDR) (CVE-2022-21123)
• incomplete clean-up of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)
• incomplete clean-up in specific special register write operations (aka DRPW) (CVE-2022-21166)
• possible to use the debugger to write zero into a location of choice (CVE-2022-21499)
• AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-23816, CVE-2022-29900)
• AMD: Branch Type Confusion (non-retbleed) (CVE-2022-23825)
• Intel: Post-barrier Return Stack Buffer Predictions (CVE-2022-26373)
• double free in ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c (CVE-2022-28390)
• use after free in SUNRPC subsystem (CVE-2022-28893)
• use-after-free due to improper update of reference count in net/sched/cls_u32.c (CVE-2022-29581)
• Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-29901)
• DoS in nfqnl_mangle in net/netfilter/nfnetlink_queue.c (CVE-2022-36946)
• nf_tables disallow binding to already bound chain (CVE-2022-39190)
• nfs_atomic_open() returns uninitialized data instead of ENOTDIR (CVE-2022-24448)

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.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

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

Security Fix(es):

• off-path attacker may inject data or terminate victim's TCP session (CVE-2020-36516)
• use-after-free vulnerability in function sco_sock_sendmsg() (CVE-2021-3640)
• smb2_ioctl_query_info NULL pointer dereference (CVE-2022-0168)
• NULL pointer dereference in udf_expand_file_adinicbdue() during writeback (CVE-2022-0617)
• swiotlb information leak with DMA_FROM_DEVICE (CVE-2022-0854)
• uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM (CVE-2022-1016)
• race condition in snd_pcm_hw_free leading to use-after-free (CVE-2022-1048)
• use-after-free and memory errors in ext4 when mounting and operating on a corrupted image (CVE-2022-1184)
• concurrency use-after-free between drm_setmaster_ioctl and drm_mode_getresources (CVE-2022-1280)
• kernel info leak issue in pfkey_register (CVE-2022-1353)
• use-after-free in ath9k_htc_probe_device() could cause an escalation of privileges (CVE-2022-1679)
• NULL pointer dereference in x86_emulate_insn may lead to DoS (CVE-2022-1852)
• fanotify misuses fd_install() which could lead to use-after-free (CVE-2022-1998)
• nf_tables cross-table potential use-after-free may lead to local privilege escalation (CVE-2022-2586)
• integer underflow leads to out-of-bounds write in reserve_sfa_size() (CVE-2022-2639)
• slab-out-of-bounds access in packet_recvmsg() (CVE-2022-20368)
• incomplete clean-up of multi-core shared buffers (aka SBDR) (CVE-2022-21123)
• incomplete clean-up of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)
• incomplete clean-up in specific special register write operations (aka DRPW) (CVE-2022-21166)
• possible to use the debugger to write zero into a location of choice (CVE-2022-21499)
• AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-23816, CVE-2022-29900)
• AMD: Branch Type Confusion (non-retbleed) (CVE-2022-23825)
• Intel: Post-barrier Return Stack Buffer Predictions (CVE-2022-26373)
• double free in ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c (CVE-2022-28390)
• use after free in SUNRPC subsystem (CVE-2022-28893)
• use-after-free due to improper update of reference count in net/sched/cls_u32.c (CVE-2022-29581)
• Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-29901)
• DoS in nfqnl_mangle in net/netfilter/nfnetlink_queue.c (CVE-2022-36946)
• nf_tables disallow binding to already bound chain (CVE-2022-39190)
• nfs_atomic_open() returns uninitialized data instead of ENOTDIR (CVE-2022-24448)

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.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

This kernel update is based on upstream 5.15.58 and fixes at least the following security issues:

Kernel lockdown bypass when UEFI secure boot is disabled / unavailable and IMA appraisal is enabled (CVE-2022-21505).

Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type potentially leading to information disclosure (CVE-2022-23825).

Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions (CVE-2022-29900, RetBleed).

Intel microprocessor generations 6 to 8 are affected by a new Spectre variant that is able to bypass their retpoline mitigation in the kernel to leak arbitrary data. An attacker with unprivileged user access can hijack return instructions to achieve arbitrary speculative code execution under certain microarchitecture-dependent conditions (CVE-2022-29901).

The Linux kernel before 5.18.13 lacks a certain clear operation for the block starting symbol (.bss). This allows Xen PV guest OS users to cause a denial of service or gain privileges (CVE-2022-36123).

An issue was discovered in the Linux kernel through 5.18.14. xfrm_expand_policies in net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice (CVE-2022-36879).

nfqnl_mangle in net/netfilter/nfnetlink_queue.c in the Linux kernel through 5.18.14 allows remote attackers to cause a denial of service (panic) because, in the case of an nf_queue verdict with a one-byte nfta_payload attribute, an skb_pull can encounter a negative skb->len (CVE-2022-36946).

Other fixes in this update:

• fs: sendfile handles O_NONBLOCK of out_fd
• hugetlb: fix memoryleak in hugetlb_mcopy_atomic_pte
• mm: fix page leak with multiple threads mapping the same page
• x86/bugs: Do not enable IBPB at firmware entry when IBPB is not available
• x86/speculation: Make all RETbleed mitigations 64-bit only

For other upstream fixes, see the referenced changelogs.

This kernel-linus update is based on upstream 5.15.58 and fixes at least the following security issues:

Kernel lockdown bypass when UEFI secure boot is disabled / unavailable and IMA appraisal is enabled (CVE-2022-21505).

Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type potentially leading to information disclosure (CVE-2022-23825).

Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions (CVE-2022-29900, RetBleed).

Intel microprocessor generations 6 to 8 are affected by a new Spectre variant that is able to bypass their retpoline mitigation in the kernel to leak arbitrary data. An attacker with unprivileged user access can hijack return instructions to achieve arbitrary speculative code execution under certain microarchitecture-dependent conditions (CVE-2022-29901).

The Linux kernel before 5.18.13 lacks a certain clear operation for the block starting symbol (.bss). This allows Xen PV guest OS users to cause a denial of service or gain privileges (CVE-2022-36123).

An issue was discovered in the Linux kernel through 5.18.14. xfrm_expand_policies in net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice (CVE-2022-36879).

For other upstream fixes, see the referenced changelogs.

This update for xen fixes the following issues:

• CVE-2022-21123, CVE-2022-21125, CVE-2022-21166: Fixed MMIO stale data vulnerabilities on x86 (XSA-404) (bsc#1200549).
• CVE-2022-33745: Fixed insufficient TLB flush for x86 PV guests in shadow mode (XSA-408) (bsc#1201394).
• CVE-2022-23816, CVE-2022-23825, CVE-2022-29900: Fixed RETBLEED vulnerability, arbitrary speculative code execution with return instructions (XSA-407) (bsc#1201469).

This update for xen fixes the following issues:

• CVE-2022-26363, CVE-2022-26364: Fixed insufficient care with non-coherent mappings (XSA-402) (bsc#1199966).
• CVE-2022-21123, CVE-2022-21125, CVE-2022-21166: Fixed MMIO stale data vulnerabilities on x86 (XSA-404) (bsc#1200549).
• CVE-2022-26362: Fixed a race condition in typeref acquisition (XSA-401) (bsc#1199965).
• CVE-2022-33745: Fixed insufficient TLB flush for x86 PV guests in shadow mode (XSA-408) (bsc#1201394).
• CVE-2022-23816, CVE-2022-23825, CVE-2022-29900: Fixed RETBLEED vulnerability, arbitrary speculative code execution with return instructions (XSA-407) (bsc#1201469).

This update for xen fixes the following issues:

• CVE-2022-26363, CVE-2022-26364: Fixed insufficient care with non-coherent mappings (XSA-402) (bsc#1199966).
• CVE-2022-21123, CVE-2022-21125, CVE-2022-21166: Fixed MMIO stale data vulnerabilities on x86 (XSA-404) (bsc#1200549).
• CVE-2022-26362: Fixed a race condition in typeref acquisition (XSA-401) (bsc#1199965).
• CVE-2022-33745: Fixed insufficient TLB flush for x86 PV guests in shadow mode (XSA-408) (bsc#1201394).
• CVE-2022-23816, CVE-2022-23825, CVE-2022-29900: Fixed RETBLEED vulnerability, arbitrary speculative code execution with return instructions (XSA-407) (bsc#1201469).

This update for xen fixes the following issues:

• CVE-2022-26363, CVE-2022-26364: Fixed insufficient care with non-coherent mappings (XSA-402) (bsc#1199966).
• CVE-2022-21123, CVE-2022-21125, CVE-2022-21166: Fixed MMIO stale data vulnerabilities on x86 (XSA-404) (bsc#1200549).
• CVE-2022-26362: Fixed a race condition in typeref acquisition (XSA-401) (bsc#1199965).
• CVE-2022-33745: Fixed insufficient TLB flush for x86 PV guests in shadow mode (XSA-408) (bsc#1201394).
• CVE-2022-23816, CVE-2022-23825, CVE-2022-29900: Fixed RETBLEED vulnerability, arbitrary speculative code execution with return instructions (XSA-407) (bsc#1201469).

This update for xen fixes the following issues:

• CVE-2022-26363, CVE-2022-26364: Fixed insufficient care with non-coherent mappings (XSA-402) (bsc#1199966).
• CVE-2022-21123, CVE-2022-21125, CVE-2022-21166: Fixed MMIO stale data vulnerabilities on x86 (XSA-404) (bsc#1200549).
• CVE-2022-26362: Fixed a race condition in typeref acquisition (XSA-401) (bsc#1199965).
• CVE-2022-33745: Fixed insufficient TLB flush for x86 PV guests in shadow mode (XSA-408) (bsc#1201394).
• CVE-2022-23816, CVE-2022-23825, CVE-2022-29900: Fixed RETBLEED vulnerability, arbitrary speculative code execution with return instructions (XSA-407) (bsc#1201469).

Fixed several upstream bugs (bsc#1027519).

This update for xen fixes the following issues:

• CVE-2022-26363, CVE-2022-26364: Fixed insufficient care with non-coherent mappings (XSA-402) (bsc#1199966).
• CVE-2022-21123, CVE-2022-21125, CVE-2022-21166: Fixed MMIO stale data vulnerabilities on x86 (XSA-404) (bsc#1200549).
• CVE-2022-26362: Fixed a race condition in typeref acquisition (XSA-401) (bsc#1199965).
• CVE-2022-33745: Fixed insufficient TLB flush for x86 PV guests in shadow mode (XSA-408) (bsc#1201394).
• CVE-2022-23816, CVE-2022-23825, CVE-2022-29900: Fixed RETBLEED vulnerability, arbitrary speculative code execution with return instructions (XSA-407) (bsc#1201469).

Fixed several upstream bugs (bsc#1027519).

This update for xen fixes the following issues:

• CVE-2022-26363, CVE-2022-26364: Fixed insufficient care with non-coherent mappings (XSA-402) (bsc#1199966).
• CVE-2022-21123, CVE-2022-21125, CVE-2022-21166: Fixed MMIO stale data vulnerabilities on x86 (XSA-404) (bsc#1200549).
• CVE-2022-26362: Fixed a race condition in typeref acquisition (XSA-401) (bsc#1199965).
• CVE-2022-33745: Fixed insufficient TLB flush for x86 PV guests in shadow mode (XSA-408) (bsc#1201394).
• CVE-2022-23816, CVE-2022-23825, CVE-2022-29900: Fixed RETBLEED vulnerability, arbitrary speculative code execution with return instructions (XSA-407) (bsc#1201469).

Fixed several upstream bugs (bsc#1027519).

This update for xen fixes the following issues:

• CVE-2022-26363, CVE-2022-26364: Fixed insufficient care with non-coherent mappings (XSA-402) (bsc#1199966).
• CVE-2022-21123, CVE-2022-21125, CVE-2022-21166: Fixed MMIO stale data vulnerabilities on x86 (XSA-404) (bsc#1200549).
• CVE-2022-26362: Fixed a race condition in typeref acquisition (XSA-401) (bsc#1199965).
• CVE-2022-33745: Fixed insufficient TLB flush for x86 PV guests in shadow mode (XSA-408) (bsc#1201394).
• CVE-2022-23816, CVE-2022-23825, CVE-2022-29900: Fixed RETBLEED vulnerability, arbitrary speculative code execution with return instructions (XSA-407) (bsc#1201469).

Fixed several upstream bugs (bsc#1027519).

This update for xen fixes the following issues:

• CVE-2022-26363, CVE-2022-26364: Fixed insufficient care with non-coherent mappings (XSA-402) (bsc#1199966).
• CVE-2022-21123, CVE-2022-21125, CVE-2022-21166: Fixed MMIO stale data vulnerabilities on x86 (XSA-404) (bsc#1200549).
• CVE-2022-26362: Fixed a race condition in typeref acquisition (XSA-401) (bsc#1199965).
• CVE-2022-33745: Fixed insufficient TLB flush for x86 PV guests in shadow mode (XSA-408) (bsc#1201394).
• CVE-2022-23816, CVE-2022-23825, CVE-2022-29900: Fixed RETBLEED vulnerability, arbitrary speculative code execution with return instructions (XSA-407) (bsc#1201469).

This update for xen fixes the following issues:

• CVE-2022-26363, CVE-2022-26364: Fixed insufficient care with non-coherent mappings (XSA-402) (bsc#1199966).
• CVE-2022-21123, CVE-2022-21125, CVE-2022-21166: Fixed MMIO stale data vulnerabilities on x86 (XSA-404) (bsc#1200549).
• CVE-2022-26362: Fixed a race condition in typeref acquisition (XSA-401) (bsc#1199965).
• CVE-2022-33745: Fixed insufficient TLB flush for x86 PV guests in shadow mode (XSA-408) (bsc#1201394).
• CVE-2022-23816, CVE-2022-23825, CVE-2022-29900: Fixed RETBLEED vulnerability, arbitrary speculative code execution with return instructions (XSA-407) (bsc#1201469).