CVE-2026-98681
In the Linux kernel, the following vulnerability has been resolved: smb: client: split cifsFileInfo bitfields to avoid shared-byte RMW races The invalidHandle,…
Impact
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 packages
This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/19465a9aeb664f1d710d0d22c07c31bfb7c85446
- https://git.kernel.org/stable/c/3786ee67658a2c80fef2544e7de2cd329e043cf9
- https://git.kernel.org/stable/c/3b8e7928cf1928555dc05d172dd02fb0e7692ec4
- https://git.kernel.org/stable/c/4165641d06ef44f3a31b77a28048b6c737e885e7
- https://git.kernel.org/stable/c/7fa619367869be705942f087b2ecd209efc78fe1
- https://git.kernel.org/stable/c/d9d23d115610e0342e768f6cb525d91c7b154027
- https://git.kernel.org/stable/c/e961baf9c1a4f2e93a55f8eb2c6151fc27b96a4c
- https://git.kernel.org/stable/c/f255e87b4f7eda568c37d6eae5db1d1a8aca5968