CVE-2026-46093mm/vmalloc: take vmap_purge_lock in shrinker
- 7.8HighCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 14 days later
· 14 days later
Published
- 2 months later
· 2 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 97% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 7679ba6b36dbb300b757b672d6a32a606499e14b – < c15ff206ba78820bf2873d0c668a882e99f4b631
- affected 7679ba6b36dbb300b757b672d6a32a606499e14b – < 687ccdf582169cd680aeaf24cc953807c4cd4345
- affected 7679ba6b36dbb300b757b672d6a32a606499e14b – < 12f2341b4c235d5593a433abac201c1c6725787f
- affected 7679ba6b36dbb300b757b672d6a32a606499e14b – < ec05f51f1e65bce95528543eb73fda56fd201d94
- affected 6.9
- unaffected < 6.9
- unaffected 6.12.96 – ≤ 6.12.*
- unaffected 6.18.27 – ≤ 6.18.*
- unaffected 7.0.4 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References4
- https://git.kernel.org/stable/c/c15ff206ba78820bf2873d0c668a882e99f4b631 (opens in a new tab)
- https://git.kernel.org/stable/c/687ccdf582169cd680aeaf24cc953807c4cd4345 (opens in a new tab)
- https://git.kernel.org/stable/c/12f2341b4c235d5593a433abac201c1c6725787f (opens in a new tab)
- https://git.kernel.org/stable/c/ec05f51f1e65bce95528543eb73fda56fd201d94 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-32476 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-46093)Record last updated .