CVE-2026-98681
In the Linux kernel, the following vulnerability has been resolved: smb: client: split cifsFileInfo bitfields to avoid shared-byte RMW race
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p6
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Published: Oct 18, 2026 · Last modified: Oct 19, 2026
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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.
- git.kernel.orghttps://git.kernel.org/stable/c/19465a9aeb664f1d710d0d22c07c31bfb7c85446
- git.kernel.orghttps://git.kernel.org/stable/c/3786ee67658a2c80fef2544e7de2cd329e043cf9
- git.kernel.orghttps://git.kernel.org/stable/c/4165641d06ef44f3a31b77a28048b6c737e885e7
- git.kernel.orghttps://git.kernel.org/stable/c/d9d23d115610e0342e768f6cb525d91c7b154027
No related CVEs by CWE or product.