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CVE PROGRAM SOURCE RECORD8.8 High

CVE-2025-22039

ksmbd: fix overflow in dacloffset bounds check

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Status
Published
Published
Updated
Assigning organization
Linux

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

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 0626e6641f6b467447c81dd7678a69c66f7746cf to < abbb4ec41867f2cd1c971258e493893bf43bcbd3affected
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to < 8483d7b532be1d1bc149556a2fedf903868c6303affected
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to < 73f074fb5e139cd42ad75089abe4e28a49a30003affected
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to < 6a9cd9ff0fa2bcc30b2bfb8bdb161eb20e44b9dcaffected
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to < 6b8d379048b168a0dff5ab1acb975b933f368514affected
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to < 443b373a4df5a2cb9f7b8c4658b2afedeb16397faffected
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to < beff0bc9d69bc8e733f9bca28e2d3df5b3e10e42affected

Linux Linux

Default version status: affected

  • 5.15affected
  • 0 to < 5.15unaffected
  • 5.15.221 to ≤ 5.15.*unaffected
  • 6.1.188 to ≤ 6.1.*unaffected
  • 6.6.157 to ≤ 6.6.*unaffected
  • 6.12.23 to ≤ 6.12.*unaffected
  • 6.13.11 to ≤ 6.13.*unaffected
  • 6.14.2 to ≤ 6.14.*unaffected
  • 6.15 to ≤ *unaffected

References