Public on 2024-01-16
Modified on 2024-02-03
A use-after-free issue was found in igmp_start_timer in net/ipv4/igmp.c in the network sub-component in the Linux Kernel. This flaw allows a local user to observe a refcnt use-after-free issue when receiving an igmp query packet, leading to a kernel information leak.
Medium severity
CVSS v3 Base Score
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 1 kernel No Fix Planned
Amazon Linux 2 - Core kernel 2024-01-03 ALAS2-2024-2391 Fixed
Amazon Linux 2 - Kernel-5.10 Extra kernel 2024-01-05 ALAS2KERNEL-5.10-2024-045 Fixed
Amazon Linux 2 - Kernel-5.15 Extra kernel 2024-01-05 ALAS2KERNEL-5.15-2024-033 Fixed
Amazon Linux 2 - Kernel-5.4 Extra kernel 2024-01-03 ALAS2KERNEL-5.4-2024-057 Fixed
Amazon Linux 2023 kernel 2023-12-13 ALAS2023-2023-461 Fixed

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.3 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H