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osvGoogleOSV:ALSA-2023:0979
HistoryFeb 28, 2023 - 12:00 a.m.

Important: kernel-rt security and bug fix update

2023-02-2800:00:00
Google
osv.dev
21
kernel-rt
security
bug fix
real time linux
cve-2022-3564
cve-2022-4378
cve-2022-4379
cve-2023-0179
cve-2022-2873
almalinux-9.1.z2

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

7.3

Confidence

High

EPSS

0.003

Percentile

66.4%

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: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c (CVE-2022-3564)
  • kernel: stack overflow in do_proc_dointvec and proc_skip_spaces (CVE-2022-4378)
  • kernel: use-after-free in __nfs42_ssc_open() in fs/nfs/nfs4file.c leading to remote Denial of Service attack (CVE-2022-4379)
  • kernel: Netfilter integer overflow vulnerability in nft_payload_copy_vlan (CVE-2023-0179)
  • kernel: an out-of-bounds vulnerability in i2c-ismt driver (CVE-2022-2873)

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-9.1.z2 Batch (BZ#2160463)

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

7.3

Confidence

High

EPSS

0.003

Percentile

66.4%