CVE-2026-23432
- Source
- https://cve.org/CVERecord?id=CVE-2026-23432
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23432.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-23432
- Downstream
- Published
- 2026-04-03T15:15:18.061Z
- Modified
- 2026-07-08T07:09:45.858254971Z
- 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
- mshv: Fix use-after-free in mshv_map_user_memory error path
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
mshv: Fix use-after-free in mshvmapuser_memory error path
In the error path of mshvmapuser_memory(), calling vfree() directly on the region leaves the MMU notifier registered. When userspace later unmaps the memory, the notifier fires and accesses the freed region, causing a use-after-free and potential kernel panic.
Replace vfree() with mshvpartitionput() to properly unregister the MMU notifier before freeing the region.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23432.json", "cna_assigner": "Linux" }- References
-
- https://git.kernel.org/stable/c/34861bdc0c0196b6c2dd48f7454029407704ff6e
- https://git.kernel.org/stable/c/6922db250422a0dfee34de322f86b7a73d713d33
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23432.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-23432
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git