Vulnerability details
CVE-2026-46093
Linux Linux
mm/vmalloc: take vmap_purge_lock in shrinker
CVSS 3.1
7.8High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 6.9 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 7679ba6b36dbb300b757b672d6a32a606499e14b ≤ v < c15ff206ba78820bf2873d0c668a882e99f4b631 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 7679ba6b36dbb300b757b672d6a32a606499e14b ≤ v < 687ccdf582169cd680aeaf24cc953807c4cd4345 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 7679ba6b36dbb300b757b672d6a32a606499e14b ≤ v < 12f2341b4c235d5593a433abac201c1c6725787f | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 7679ba6b36dbb300b757b672d6a32a606499e14b ≤ v < ec05f51f1e65bce95528543eb73fda56fd201d94 | CVEProject cvelistV5 (CNA) |
References and advisories
4
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Details
- Published
- 2026-05-27
- Last updated
- 2026-08-05
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.12%
Probability of exploitation in 30 days
2.5%
Percentile (among all CVEs)
Weaknesses (CWE)
- —