Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: smb: client: split cifsFileInfo bitfields to avoid shared-byte RMW races The invalidHandle, swapfile, oplock_break_cancelled, offload, and status_file_deleted fields are stored in the same bitfield byte in struct cifsFileInfo, but are updated in different code paths that may run simultaneously, and are protected by different locks. Since bitfield assignments generate byte-level read-modify-write operations, a modification to one flag can overwrite a concurrent modification to another flag. To avoid these races, convert these flags from a bitfield to separate bool fields.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 3bc303c254335dbd7c7012cc1760b12f1d5514d3 before 3b8e7928cf1928555dc05d172dd02fb0e7692ec4; affected 3bc303c254335dbd7c7012cc1760b12f1d5514d3 before 3786ee67658a2c80fef2544e7de2cd329e043cf9; affected 3bc303c254335dbd7c7012cc1760b12f1d5514d3 before 4165641d06ef44f3a31b77a28048b6c737e885e7; affected 3bc303c254335dbd7c7012cc1760b12f1d5514d3 before d9d23d115610e0342e768f6cb525d91c7b154027; affected 3bc303c254335dbd7c7012cc1760b12f1d5514d3 before 19465a9aeb664f1d710d0d22c07c31bfb7c85446 |
| Linux / Linux | affected 2.6.32; unaffected 0 before 2.6.32; unaffected 6.6.160 through 6.6.*; unaffected 6.12.113 through 6.12.*; unaffected 6.18.56 through 6.18.*; unaffected 7.2.10 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3b8e7928cf1928555dc05d172dd02fb0e7692ec4
- https://git.kernel.org/stable/c/3786ee67658a2c80fef2544e7de2cd329e043cf9
- https://git.kernel.org/stable/c/4165641d06ef44f3a31b77a28048b6c737e885e7
- https://git.kernel.org/stable/c/d9d23d115610e0342e768f6cb525d91c7b154027
- https://git.kernel.org/stable/c/19465a9aeb664f1d710d0d22c07c31bfb7c85446