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CVE-2023-6111

Public on 2023-11-14
Modified on 2024-02-03
Description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.

The function nft_trans_gc_catchall did not remove the catchall set element from the catchall_list when the argument sync is true, making it possible to free a catchall set element many times.

We recommend upgrading past commit 93995bf4af2c5a99e2a87f0cd5ce547d31eb7630.

Severity
Important
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CVSS v3 Base Score
7.8
See breakdown
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Kernel-5.15 Extra kernel 2023-11-29 22:47 ALAS2KERNEL-5.15-2023-031
Amazon Linux 2023 kernel 2023-12-13 20:28 ALAS2023-2023-461
Amazon Linux 2023 kernel-livepatch-6.1.56-82.125 2023-12-06 07:52 ALAS2023LIVEPATCH-2023-021
Amazon Linux 2023 kernel-livepatch-6.1.59-84.139 2023-12-06 07:52 ALAS2023LIVEPATCH-2023-022
Amazon Linux 2023 kernel-livepatch-6.1.61-85.141 2023-12-06 07:52 ALAS2023LIVEPATCH-2023-020

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