CVE-2026-46100
Published: May 27, 2026
Modified: May 30, 2026
CVSS v3.1
7.8
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected 9d5403b1036cdcd4be0f9f5568612c0e60e73d79 - < f51f85c044809fbd39ac8ae07ac99bc43ce32bd5affected 9d5403b1036cdcd4be0f9f5568612c0e60e73d79 - < 48c7a0eaeea41da17d1d84d2d7a4c40be122b246affected 9d5403b1036cdcd4be0f9f5568612c0e60e73d79 - < fbfc6578eaca12daa0c09df1e9ba7f2c657b49da |
Linux | Linux | affected 6.17unaffected 0 - < 6.17unaffected 6.18.27 - <= 6.18.*unaffected 7.0.4 - <= 7.0.*unaffected 7.1-rc1 - <= * |
CVSS v3.1 Details
CVSS v3.1 Vector
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
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