Bug 2492360 (CVE-2026-52949) - CVE-2026-52949 kernel: drm/ttm: Fix ttm_bo_shrink() infinite LRU walk on backup failure
Summary: CVE-2026-52949 kernel: drm/ttm: Fix ttm_bo_shrink() infinite LRU walk on back...
Keywords:
Status: NEW
Alias: CVE-2026-52949
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-24 18:07 UTC by OSIDB Bzimport
Modified: 2026-06-26 19:32 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-06-24 18:07:49 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/ttm: Fix ttm_bo_shrink() infinite LRU walk on backup failure

Apply the same fix as b2ed01e7ad ("drm/ttm: Fix ttm_bo_swapout()
infinite LRU walk on swapout failure") to the ttm_bo_shrink() path.

Move del_bulk_move from before the backup to after success only,
using ttm_resource_del_bulk_move_unevictable() since the resource
is now unevictable once fully backed up.
Comment 1 Keith Grant 2026-06-26 19:28:57 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026062433-CVE-2026-52949-3210@gregkh/T
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