PT-2022-7684 · Linux+3 · Linux Kernel+3

Thorsten Winkler · Published 2022-12-08 · Updated 2025-02-11 · CVE-2022-48954

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.1.0-20221128.rc7.git1.5aa3bed4ce83.300.fc36.s390x+kasan

Description The issue is related to a use-after-free vulnerability in the qeth l2 br2dev worker() function in the Linux kernel on the s390 platform. This vulnerability can be exploited to impact the confidentiality, integrity, and availability of protected information. The vulnerability occurs when the br2dev event work is freed, but the address is still dereferenced.

Recommendations As a temporary workaround, consider disabling the qeth l2 br2dev worker() function until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2024-10087

CVE-2022-48954

OPENSUSE-SU-2024_3983-1

OPENSUSE-SU-2024_3985-1

OPENSUSE-SU-2024_4131-1

SUSE-SU-2024:3983-1

SUSE-SU-2024:3985-1

SUSE-SU-2024:4082-1

SUSE-SU-2024:4131-1

SUSE-SU-2024:4364-1

Affected Products

Astra Linux

Linux Kernel

Red Os

Suse

References · 986

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48954.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2024:3985-1 · Vendor Advisory
• https://git.kernel.org/stable/c/db6343a5b0d9661f2dd76f653c6d274d38234d2b · Patch
• https://git.kernel.org/stable/c/ebaaadc332cd21e9df4dcf9ce12552d9354bbbe4 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:4364-1 · Vendor Advisory
• https://git.kernel.org/stable/c/bde0dfc7c4569406a6ddeec363d04a1df7b3073f · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-48954 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-48954 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-10087 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-48954 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-48954 · Security Note
• https://ubuntu.com/security/CVE-2022-48954 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:4131-1 · Vendor Advisory
• http://repo.red-soft.ru/redos/7.3c/x86_64/updates · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-48954 · Security Note