CVE-2023-31436

Public on 2023-04-28
Modified on 2024-01-12
Description

qfq_change_class in net/sched/sch_qfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write because lmax can exceed QFQ_MIN_LMAX.

Severity
Medium
See what this means
CVSS v3 Base Score
6.1
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 kernel 2023-05-11 18:00 ALAS-2023-1744
Amazon Linux 2 - Core kernel 2023-05-11 17:49 ALAS2-2023-2035
Amazon Linux 2 - Kernel-5.10 Extra kernel 2023-05-11 17:50 ALAS2KERNEL-5.10-2023-032
Amazon Linux 2 - Kernel-5.15 Extra kernel 2023-05-11 17:50 ALAS2KERNEL-5.15-2023-018
Amazon Linux 2 - Kernel-5.4 Extra kernel 2023-05-11 17:50 ALAS2KERNEL-5.4-2023-045
Amazon Linux 2023 kernel 2023-05-11 17:49 ALAS2023-2023-179

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/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