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redhatRedHatRHSA-2023:1008
HistoryFeb 28, 2023 - 11:39 a.m.

(RHSA-2023:1008) Important: kpatch-patch security update

2023-02-2811:39:02
access.redhat.com
31
kernel live patch
use-after-free
stack overflow
remote denial of service attack
integer overflow
netfilter vulnerability

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

EPSS

0.003

Percentile

66.4%

This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.

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)

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.

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

EPSS

0.003

Percentile

66.4%