Описание
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.
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.
Ссылки
- https://nvd.nist.gov/vuln/detail/CVE-2026-98681
- 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
EPSS
CVE ID
Связанные уязвимости
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.
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.
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.
smb: client: split cifsFileInfo bitfields to avoid shared-byte RMW races
In the Linux kernel, the following vulnerability has been resolved: s ...
EPSS