Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix overflow in dacloffset bounds check The dacloffset field was originally typed as int and used in an unchecked addition, which could overflow and bypass the existing bounds check in both smb_check_perm_dacl() and smb_inherit_dacl(). This could result in out-of-bounds memory access and a kernel crash when dereferencing the DACL pointer. This patch converts dacloffset to unsigned int and uses check_add_overflow() to validate access to the DACL.
Affected products
linux: linux kernel
References7
- git.kernel.org/stable/c/443b373a4df5a2cb9f7b8c4658b2afedeb16397f Patch
- git.kernel.org/stable/c/6a9cd9ff0fa2bcc30b2bfb8bdb161eb20e44b9dc Patch
- git.kernel.org/stable/c/6b8d379048b168a0dff5ab1acb975b933f368514 Patch
- git.kernel.org/stable/c/beff0bc9d69bc8e733f9bca28e2d3df5b3e10e42 Patch
- git.kernel.org/stable/c/73f074fb5e139cd42ad75089abe4e28a49a30003
- git.kernel.org/stable/c/8483d7b532be1d1bc149556a2fedf903868c6303
- git.kernel.org/stable/c/abbb4ec41867f2cd1c971258e493893bf43bcbd3
Metrics
- CVSS 3.1
-
7.1
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H - EPSS — exploit probability
- 1% percentile: 56 · as of 7 November 2026
- CWE
- CWE-125CWE-190
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