CVE-2026-46093
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedMay 27, 2026
First seenMay 27, 2026
How to fix
Update
- linux linux_kernel6.18.27, 7.0.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.9 ≤ v < 6.18.27, 6.19 ≤ v < 7.0.4 | 6.18.27, 7.0.4 |
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