vulnerability

Red Hat: CVE-2024-49573: kernel: sched/fair: Fix NEXT_BUDDY

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
Jan 11, 2025
Added
Jul 9, 2025
Modified
Jul 31, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

sched/fair: Fix NEXT_BUDDY

Adam reports that enabling NEXT_BUDDY insta triggers a WARN in
pick_next_entity().

Moving clear_buddies() up before the delayed dequeue bits ensures
no ->next buddy becomes delayed. Further ensure no new ->next buddy
ever starts as delayed.

Title
NEW

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