CVEvulnerability
CVE-2026-46093
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2026-05-27
- Last modified
- 2026-07-18
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
In the Linux kernel, the following vulnerability has been resolved:
mm/vmalloc: take vmap_purge_lock in shrinker
decay_va_pool_node() can be invoked concurrently from two paths:
__purge_vmap_area_lazy() when pools are being purged, and the shrinker via
vmap_node_shrink_scan().
However, decay_va_pool_node() is not safe to run concurrently, and the
shrinker path currently lacks serialization, leading to races and possible
leaks.
Protect decay_va_pool_node() by taking vmap_purge_lock in the shrinker
path to ensure serialization with purge users.
Affected configurations
• linux linux kernel (>= 6.9 < 6.18.27)
• linux linux kernel (>= 6.19 < 7.0.4)
References
- https://git.kernel.org/stable/c/12f2341b4c235d5593a433abac201c1c6725787f Patch
- https://git.kernel.org/stable/c/687ccdf582169cd680aeaf24cc953807c4cd4345 Patch
- https://git.kernel.org/stable/c/c15ff206ba78820bf2873d0c668a882e99f4b631 git.kernel.org
- https://git.kernel.org/stable/c/ec05f51f1e65bce95528543eb73fda56fd201d94 Patch