ALSA-2022:7933 — Moderate: kernel-rt security and bug fix update

Summary

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.

Fixed packages 12

Release	Package	Fixed in
AlmaLinux · 9	kernel-rt	5.14.0-162.6.1.rt21.168.el9_1
AlmaLinux · 9	kernel-rt-core	5.14.0-162.6.1.rt21.168.el9_1
AlmaLinux · 9	kernel-rt-debug	5.14.0-162.6.1.rt21.168.el9_1
AlmaLinux · 9	kernel-rt-debug-core	5.14.0-162.6.1.rt21.168.el9_1
AlmaLinux · 9	kernel-rt-debug-devel	5.14.0-162.6.1.rt21.168.el9_1
AlmaLinux · 9	kernel-rt-debug-kvm	5.14.0-162.6.1.rt21.168.el9_1
AlmaLinux · 9	kernel-rt-debug-modules	5.14.0-162.6.1.rt21.168.el9_1
AlmaLinux · 9	kernel-rt-debug-modules-extra	5.14.0-162.6.1.rt21.168.el9_1
AlmaLinux · 9	kernel-rt-devel	5.14.0-162.6.1.rt21.168.el9_1
AlmaLinux · 9	kernel-rt-kvm	5.14.0-162.6.1.rt21.168.el9_1
AlmaLinux · 9	kernel-rt-modules	5.14.0-162.6.1.rt21.168.el9_1
AlmaLinux · 9	kernel-rt-modules-extra	5.14.0-162.6.1.rt21.168.el9_1

Vulnerabilities 31

Medium 5.3

CVE-2022-2586 Exploited Public exploit EPSS 10%

It was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-…

The Linux Kernel Organization linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux

Jan 8, 2024
KEV Jun 26, 2024
High 7.8

CVE-2022-29581 Public exploit

Improper Update of Reference Count vulnerability in net/sched of Linux Kernel allows local attacker to cause privilege …

Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux

May 17, 2022
High 7.5

CVE-2022-36946 Public exploit

nfqnl_mangle in net/netfilter/nfnetlink_queue.c in the Linux kernel through 5.18.14 allows remote attackers to cause a …

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux

Jul 27, 2022
Medium 6.7

CVE-2022-21499

KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker w…

Oracle Oracle Linux Oracle VM linux-raspi2 Linux Debian Ubuntu

Jun 9, 2022
Medium 5.6

CVE-2022-29901

Arbitrary Memory Disclosure through CPU Side-Channel Attacks (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…

Intel Intel Microprocessors linux-raspi2 linux-hwe Debian Ubuntu

Jul 12, 2022
Medium 5.5

CVE-2022-21123

Incomplete cleanup of multi-core shared buffers for some Intel(R) Processors may allow an authenticated user to potenti…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Alpine

Jun 15, 2022
Medium 5.5

CVE-2022-21125

Incomplete cleanup of microarchitectural fill buffers on some Intel(R) Processors may allow an authenticated user to po…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Alpine

Jun 15, 2022
Medium 5.5

CVE-2022-21166

Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an authenticate…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Alpine

Jun 15, 2022
Medium 5.5

CVE-2022-26373

Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow an authorize…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu

Aug 18, 2022
Unscored —

CVE-2020-36516

An issue was discovered in the Linux kernel through 5.16.11. The mixed IPID assignment method with the hash-based IPID …

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu

Feb 26, 2022
Unscored —

CVE-2021-3640

A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls …

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu

Mar 3, 2022
Unscored —

CVE-2022-0168

A denial of service (DOS) issue was found in the Linux kernel’s smb2_ioctl_query_info function in the fs/cifs/smb2ops.c…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux

Aug 26, 2022
Unscored —

CVE-2022-0617

A flaw null pointer dereference in the Linux kernel UDF file system functionality was found in the way user triggers ud…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux

Feb 16, 2022
Unscored —

CVE-2022-0854

A memory leak flaw was found in the Linux kernel’s DMA subsystem, in the way a user calls DMA_FROM_DEVICE. This flaw al…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux

Mar 23, 2022
Unscored —

CVE-2022-1016

A flaw was found in the Linux kernel in net/netfilter/nf_tables_core.c:nft_do_chain, which can cause a use-after-free. …

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux

Aug 29, 2022
Unscored —

CVE-2022-1048

A use-after-free flaw was found in the Linux kernel’s sound subsystem in the way a user triggers concurrent calls of PC…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux

Apr 29, 2022
Unscored —

CVE-2022-1184

A use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the Linux kernel’s filesystem sub-component. Th…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu

Aug 29, 2022
Unscored —

CVE-2022-1280

A use-after-free vulnerability was found in drm_lease_held in drivers/gpu/drm/drm_lease.c in the Linux kernel due to a …

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu

Apr 13, 2022
Unscored —

CVE-2022-1353

A vulnerability was found in the pfkey_register function in net/key/af_key.c in the Linux kernel. This flaw allows a lo…

Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux

Apr 29, 2022
Unscored —

CVE-2022-1679 Public exploit

A use-after-free flaw was found in the Linux kernel’s Atheros wireless adapter driver in the way a user forces the ath9…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu

May 16, 2022
Unscored —

CVE-2022-1852

A NULL pointer dereference flaw was found in the Linux kernel’s KVM module, which can lead to a denial of service in th…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux

Jun 30, 2022
Unscored —

CVE-2022-1998

A use after free in the Linux kernel File System notify functionality was found in the way user triggers copy_info_reco…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux

Jun 9, 2022
Unscored —

CVE-2022-20368

Product: AndroidVersions: Android kernelAndroid ID: A-224546354References: Upstream kernel

linux-raspi2 linux-hwe linux-azure linux-riscv Android Debian Ubuntu

Aug 11, 2022
Unscored —

CVE-2022-23816 Rejected

DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate is unused by its CNA. Notes: none.

linux-hwe linux-azure linux-riscv linux-gcp Ubuntu Alpine

Jan 21, 2022
Unscored —

CVE-2022-23825

Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type potentially leading to i…

AMD AMD Processors linux-raspi2 linux-hwe Debian Ubuntu Alpine

Jul 14, 2022
Unscored —

CVE-2022-24448

An issue was discovered in fs/nfs/dir.c in the Linux kernel before 5.16.5. If an application sets the O_DIRECTORY flag,…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux

Feb 4, 2022
Unscored —

CVE-2022-2639 Public exploit

An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of actions, whi…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu

Sep 1, 2022
Unscored —

CVE-2022-28390

ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c in the Linux kernel through 5.17.1 has a double free.

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux

Apr 3, 2022
Unscored —

CVE-2022-28893

The SUNRPC subsystem in the Linux kernel through 5.17.2 can call xs_xprt_free before ensuring that sockets are in the i…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux

Apr 11, 2022
Unscored —

CVE-2022-29900 Public exploit

Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain mic…

AMD AMD Processors linux-raspi2 linux-hwe Debian Ubuntu Alpine

Jul 12, 2022
Unscored —

CVE-2022-39190

An issue was discovered in net/netfilter/nf_tables_api.c in the Linux kernel before 5.19.6. A denial of service can occ…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux

Sep 2, 2022

References

report
https://access.redhat.com/security/cve/CVE-2020-36516
report
https://access.redhat.com/security/cve/CVE-2021-3640
report
https://access.redhat.com/security/cve/CVE-2022-0168
report
https://access.redhat.com/security/cve/CVE-2022-0617
report
https://access.redhat.com/security/cve/CVE-2022-0854
report
https://access.redhat.com/security/cve/CVE-2022-1016
report
https://access.redhat.com/security/cve/CVE-2022-1048
report
https://access.redhat.com/security/cve/CVE-2022-1184
report
https://access.redhat.com/security/cve/CVE-2022-1280
report
https://access.redhat.com/security/cve/CVE-2022-1353
report
https://access.redhat.com/security/cve/CVE-2022-1679
report
https://access.redhat.com/security/cve/CVE-2022-1852
report
https://access.redhat.com/security/cve/CVE-2022-1998
report
https://access.redhat.com/security/cve/CVE-2022-20368
report
https://access.redhat.com/security/cve/CVE-2022-21123
report
https://access.redhat.com/security/cve/CVE-2022-21125
report
https://access.redhat.com/security/cve/CVE-2022-21166
report
https://access.redhat.com/security/cve/CVE-2022-21499
report
https://access.redhat.com/security/cve/CVE-2022-23816
report
https://access.redhat.com/security/cve/CVE-2022-23825
report
https://access.redhat.com/security/cve/CVE-2022-24448
report
https://access.redhat.com/security/cve/CVE-2022-2586
report
https://access.redhat.com/security/cve/CVE-2022-26373
report
https://access.redhat.com/security/cve/CVE-2022-2639
report
https://access.redhat.com/security/cve/CVE-2022-28390
report
https://access.redhat.com/security/cve/CVE-2022-28893
report
https://access.redhat.com/security/cve/CVE-2022-29581
report
https://access.redhat.com/security/cve/CVE-2022-29900
report
https://access.redhat.com/security/cve/CVE-2022-29901
report
https://access.redhat.com/security/cve/CVE-2022-36946
report
https://access.redhat.com/security/cve/CVE-2022-39190
report
https://bugzilla.redhat.com/1980646
report
https://bugzilla.redhat.com/2037386
report
https://bugzilla.redhat.com/2051444
report
https://bugzilla.redhat.com/2052312
report
https://bugzilla.redhat.com/2053632
report
https://bugzilla.redhat.com/2058395
report
https://bugzilla.redhat.com/2059928
report
https://bugzilla.redhat.com/2066614

Moderate: kernel-rt security and bug fix update

Summary

Fixed packages 12

Vulnerabilities 31

It was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-…

Improper Update of Reference Count vulnerability in net/sched of Linux Kernel allows local attacker to cause privilege …

nfqnl_mangle in net/netfilter/nfnetlink_queue.c in the Linux kernel through 5.18.14 allows remote attackers to cause a …

KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker w…

Arbitrary Memory Disclosure through CPU Side-Channel Attacks (Retbleed)

Incomplete cleanup of multi-core shared buffers for some Intel(R) Processors may allow an authenticated user to potenti…

Incomplete cleanup of microarchitectural fill buffers on some Intel(R) Processors may allow an authenticated user to po…

Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an authenticate…

Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow an authorize…

An issue was discovered in the Linux kernel through 5.16.11. The mixed IPID assignment method with the hash-based IPID …

A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls …

A denial of service (DOS) issue was found in the Linux kernel’s smb2_ioctl_query_info function in the fs/cifs/smb2ops.c…

A flaw null pointer dereference in the Linux kernel UDF file system functionality was found in the way user triggers ud…

A memory leak flaw was found in the Linux kernel’s DMA subsystem, in the way a user calls DMA_FROM_DEVICE. This flaw al…

A flaw was found in the Linux kernel in net/netfilter/nf_tables_core.c:nft_do_chain, which can cause a use-after-free. …

A use-after-free flaw was found in the Linux kernel’s sound subsystem in the way a user triggers concurrent calls of PC…

A use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the Linux kernel’s filesystem sub-component. Th…

A use-after-free vulnerability was found in drm_lease_held in drivers/gpu/drm/drm_lease.c in the Linux kernel due to a …

A vulnerability was found in the pfkey_register function in net/key/af_key.c in the Linux kernel. This flaw allows a lo…

A use-after-free flaw was found in the Linux kernel’s Atheros wireless adapter driver in the way a user forces the ath9…

A NULL pointer dereference flaw was found in the Linux kernel’s KVM module, which can lead to a denial of service in th…

A use after free in the Linux kernel File System notify functionality was found in the way user triggers copy_info_reco…

Product: AndroidVersions: Android kernelAndroid ID: A-224546354References: Upstream kernel

DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate is unused by its CNA. Notes: none.

Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type potentially leading to i…

An issue was discovered in fs/nfs/dir.c in the Linux kernel before 5.16.5. If an application sets the O_DIRECTORY flag,…

An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of actions, whi…

ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c in the Linux kernel through 5.17.1 has a double free.

The SUNRPC subsystem in the Linux kernel through 5.17.2 can call xs_xprt_free before ensuring that sockets are in the i…

Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain mic…

An issue was discovered in net/netfilter/nf_tables_api.c in the Linux kernel before 5.19.6. A denial of service can occ…

References