What’s Vulnerable › Vulnerabilities

CVE-2026-52949: drm/ttm: Fix ttm_bo_shrink() infinite LRU walk on backup failure

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-24 · updated 2026-10-15

Description

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.

Affected products

• Linux kernel: from 6.15 before 7.0.10; 7.1-rc1, 7.1-rc2, 7.1-rc3 — fixed in 7.0.10

How to fix

Upgrade to a fixed version: Linux kernel 7.0.10. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1d59f36e95f7f7134db0e313c9d787cb0adb2153
• https://git.kernel.org/stable/c/9402ad98a047dd9894ec868a7df5ad9bd03327d3
• https://git.kernel.org/stable/c/d0ce7b07dafe43d78150f90894027746576d7cb7

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