Bug 2337095 (CVE-2024-49573) - CVE-2024-49573 kernel: sched/fair: Fix NEXT_BUDDY
Summary: CVE-2024-49573 kernel: sched/fair: Fix NEXT_BUDDY
Keywords:
Status: NEW
Alias: CVE-2024-49573
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-01-11 13:01 UTC by OSIDB Bzimport
Modified: 2025-01-13 08:43 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description OSIDB Bzimport 2025-01-11 13:01:18 UTC 
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.
Comment 1 Avinash Hanwate 2025-01-13 08:37:54 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025011142-CVE-2024-49573-fa46@gregkh/T
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