CVE-2026-46100
fs: afs: revert mmap_prepare() change
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 27, 2026 |
| Last Updated | May 30, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new high vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
9d5403b1036cdcd4be0f9f5568612c0e60e73d79 < f51f85c044809fbd39ac8ae07ac99bc43ce32bd5 9d5403b1036cdcd4be0f9f5568612c0e60e73d79 < 48c7a0eaeea41da17d1d84d2d7a4c40be122b246 9d5403b1036cdcd4be0f9f5568612c0e60e73d79 < fbfc6578eaca12daa0c09df1e9ba7f2c657b49da
Linux / Linux
6.17