CVE-2026-46093
- Source
- https://cve.org/CVERecord?id=CVE-2026-46093
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46093.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-46093
- Downstream
- Related
- Published
- 2026-05-27T12:58:43.458Z
- Modified
- 2026-06-27T11:55:19.141471225Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- mm/vmalloc: take vmap_purge_lock in shrinker
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
mm/vmalloc: take vmappurgelock in shrinker
decayvapool_node() can be invoked concurrently from two paths: __purgevmaparealazy() when pools are being purged, and the shrinker via vmapnodeshrinkscan().
However, decayvapool_node() is not safe to run concurrently, and the shrinker path currently lacks serialization, leading to races and possible leaks.
Protect decayvapoolnode() by taking vmappurge_lock in the shrinker path to ensure serialization with purge users.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46093.json" }- References
-
- https://git.kernel.org/stable/c/12f2341b4c235d5593a433abac201c1c6725787f
- https://git.kernel.org/stable/c/687ccdf582169cd680aeaf24cc953807c4cd4345
- https://git.kernel.org/stable/c/ec05f51f1e65bce95528543eb73fda56fd201d94
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46093.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-46093
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git