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CVE-2023-6932

Public on 2023-12-19
Modified on 2024-01-11
Description

A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation.

A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread.

We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1.

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 2024-01-03 22:37 ALAS-2024-1899
Amazon Linux 2 - Core kernel 2024-01-03 21:04 ALAS2-2024-2391
Amazon Linux 2 - Kernel-5.10 Extra kernel 2024-01-05 21:40 ALAS2KERNEL-5.10-2024-045
Amazon Linux 2 - Kernel-5.10 Extra kernel 2024-01-19 02:20 ALAS2KERNEL-5.10-2024-047
Amazon Linux 2 - Kernel-5.15 Extra kernel 2024-01-05 21:40 ALAS2KERNEL-5.15-2024-033
Amazon Linux 2 - Kernel-5.15 Extra kernel 2024-01-19 02:20 ALAS2KERNEL-5.15-2024-035
Amazon Linux 2 - Kernel-5.4 Extra kernel 2024-01-03 23:00 ALAS2KERNEL-5.4-2024-057
Amazon Linux 2023 kernel 2023-12-13 20:28 ALAS2023-2023-461
Amazon Linux 2 - Livepatch Extra kernel-livepatch-4.14.327-246.539 2024-02-01 20:10 ALAS2LIVEPATCH-2024-162
Amazon Linux 2 - Livepatch Extra kernel-livepatch-4.14.328-248.540 2024-02-01 20:10 ALAS2LIVEPATCH-2024-163
Amazon Linux 2 - Livepatch Extra kernel-livepatch-4.14.330-250.540 2024-02-01 20:10 ALAS2LIVEPATCH-2024-161
Amazon Linux 2 - Livepatch Extra kernel-livepatch-5.10.201-191.748 2024-02-29 00:57 ALAS2LIVEPATCH-2024-167

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