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Privilege Context Switching Error The advisory has been revoked - it doesn't affect any version of package kernel-rt-64k-modules-extra  (opens in a new tab)

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EPSS
0.48% (40th percentile)

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  • Snyk IDSNYK-CENTOS10-KERNELRT64KMODULESEXTRA-18876283
  • published18 Aug 2026
  • disclosed15 Aug 2026
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Introduced: 15 Aug 2026

NewCVE-2026-68457  (opens in a new tab)
CWE-270  (opens in a new tab)

Amendment

The Centos security team deemed this advisory irrelevant for Centos:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-64k-modules-extra package and not the kernel-rt-64k-modules-extra package as distributed by Centos.

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: use opener credentials for FSCTL mutations

SET_SPARSE, SET_ZERO_DATA and SET_COMPRESSION operate on an open SMB handle but call VFS xattr, fallocate or fileattr helpers with the current ksmbd worker credentials. Those helpers can revalidate inode permissions, ownership and LSM policy independently of the SMB handle access mask.

Run each operation with the credentials captured in the target file when the handle was opened. Keep credential handling local to these single-file FSCTLs rather than applying session credentials to the complete IOCTL handler, which also contains handle-less and multi-handle operations.