CVE-2026-89447
CVE CVE-2026-89447EUVD EUVD-2026-76353Published 2026-09-11T19:43:14.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: iommufd: Avoid locking internal accesses during unmap iommufd_access_notify_unmap() skips internal accesses because they do not have an external unmap callback to invoke. However, the current test calls iommufd_lock_obj() before checking whether the access is internal. If iommufd_lock_obj() succeeds, the loop then sees the internal access and continues, bypassing the matching iommufd_put_object() used by the normal unmap path. This leaks the object reference taken by iommufd_lock_obj(). Check for internal accesses first so skipped entries are never locked.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 7.3-rc1; 27b77ea5feaa8fcf385ea99ce757982b0ac9d1f0 <0dbcdf4473a614adbd732d567c9b39ac0e040e0c; patch: 0; 27b77ea5feaa8fcf385ea99ce757982b0ac9d1f0 <436189ee4bb2c7c993b945d68570dd38c3e4349e; patch: 6.18.50; patch: 7.2.4; 6.17; 27b77ea5feaa8fcf385ea99ce757982b0ac9d1f0 <50a66a63d1c841ae6b28a4551f642c1bba4c9529
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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