Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 9d5403b1036cdcd4be0f9f5568612c0e60e73d79 before f51f85c044809fbd39ac8ae07ac99bc43ce32bd5; affected 9d5403b1036cdcd4be0f9f5568612c0e60e73d79 before 48c7a0eaeea41da17d1d84d2d7a4c40be122b246; affected 9d5403b1036cdcd4be0f9f5568612c0e60e73d79 before fbfc6578eaca12daa0c09df1e9ba7f2c657b49da |
| Linux / Linux | affected 6.17; unaffected 0 before 6.17; unaffected 6.18.27 through 6.18.*; unaffected 7.0.4 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.