VULNERABILITY INTELLIGENCE
CVE-2026-46100
CVSS score7.8 HIGH
EPSS probability0.14%
CISA KEVNot currently listed
Published2026-05-27
Last modified2026-06-25
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
In the Linux kernel, the following vulnerability has been resolved: fs: afs: revert mmap_prepare() change Partially reverts commit 9d5403b1036c ("fs: convert most other generic_file_*mmap() users to .mmap_prepare()"). This is because the .mmap invocation establishes a refcount, but .mmap_prepare is called at a point where a merge or an allocation failure might happen after the call, which would leak the refcount increment. Functionality is being added to permit the use of .mmap_prepare in this case, but in the interim, we need to fix this.
Weakness classification
- nvd@nist.gov: NVD-CWE-noinfo