UNKNOWN NVD
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
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.
References
- https://git.kernel.org/stable/c/19465a9aeb664f1d710d0d22c07c31bfb7c85446
- https://git.kernel.org/stable/c/3786ee67658a2c80fef2544e7de2cd329e043cf9
- https://git.kernel.org/stable/c/4165641d06ef44f3a31b77a28048b6c737e885e7
- https://git.kernel.org/stable/c/d9d23d115610e0342e768f6cb525d91c7b154027
This unknown severity vulnerability was published on 2026-10-18 via NVD.
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