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CVE-2023-1281

Public on 2023-03-22
Modified on 2024-01-12
Description

Use After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege Escalation. The imperfect hash area can be updated while packets are traversing, which will cause a use-after-free when 'tcf_exts_exec()' is called with the destroyed tcf_ext. A local attacker user can use this vulnerability to elevate its privileges to root.
This issue affects Linux Kernel: from 4.14 before git commit ee059170b1f7e94e55fa6cadee544e176a6e59c2.

Severity
Important
See what this means
CVSS v3 Base Score
7.8
See breakdown
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 kernel 2023-03-17 15:53 ALAS-2023-1701
Amazon Linux 2 - Core kernel 2023-03-17 16:34 ALAS2-2023-1987
Amazon Linux 2 - Kernel-5.10 Extra kernel 2023-03-17 16:46 ALAS2KERNEL-5.10-2023-028
Amazon Linux 2 - Kernel-5.15 Extra kernel 2023-03-17 16:46 ALAS2KERNEL-5.15-2023-015
Amazon Linux 2 - Kernel-5.4 Extra kernel 2023-03-17 16:45 ALAS2KERNEL-5.4-2023-043
Amazon Linux 2023 kernel 2023-03-11 01:10 ALAS2023-2023-127

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv3 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H