CVE-2026-64152
- Source
- https://cve.org/CVERecord?id=CVE-2026-64152
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64152.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-64152
- Downstream
- Published
- 2026-07-19T15:40:41.354Z
- Modified
- 2026-07-22T05:30:06.524030651Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- iommu: Handle unmap error when iommu_debug is enabled
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
iommu: Handle unmap error when iommu_debug is enabled
Sashiko noticed a latent bug where the map error flow called iommuunmap() which calls iommudebugunmapbegin()/iommudebugunmapend() however since this is an error path the map flow never actually established the original iommudebug_map() it will malfunction.
Lift the unmap error handling into iommumapnosync() and reorder it so the tracemap()/iommudebug_map() records the partial mapping and then immediately unmaps it. This avoid creating the unbalanced tracking and provides saner tracing instead of a unmap unmatched to any map.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64152.json", "cna_assigner": "Linux" }- References
-
- https://git.kernel.org/stable/c/0735c54804c709d1b292f3b6947cfb560b2ce552
- https://git.kernel.org/stable/c/0cd028806efc148a75d4acf711d21db335a89661
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64152.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-64152
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git