CVE-2026-46093
mm/vmalloc: take vmap_purge_lock in shrinker
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 27, 2026 |
| Last Updated | May 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
7679ba6b36dbb300b757b672d6a32a606499e14b < 687ccdf582169cd680aeaf24cc953807c4cd4345 7679ba6b36dbb300b757b672d6a32a606499e14b < 12f2341b4c235d5593a433abac201c1c6725787f 7679ba6b36dbb300b757b672d6a32a606499e14b < ec05f51f1e65bce95528543eb73fda56fd201d94
Linux / Linux
6.9