CVE-2025-22039High· 8.8▾ TwilightIn 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 …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.2 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 14.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.7%
0.7% → 0.8%
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.
Linux >= 0626e6641f6b467447c81dd7678a69c66f7746cf < abbb4ec41867f2cd1c971258e493893bf43bcbd3Linux >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 8483d7b532be1d1bc149556a2fedf903868c6303Linux >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 73f074fb5e139cd42ad75089abe4e28a49a30003Linux >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 6a9cd9ff0fa2bcc30b2bfb8bdb161eb20e44b9dcLinux >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 6b8d379048b168a0dff5ab1acb975b933f368514Linux >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 443b373a4df5a2cb9f7b8c4658b2afedeb16397fLinux >= 0626e6641f6b467447c81dd7678a69c66f7746cf < beff0bc9d69bc8e733f9bca28e2d3df5b3e10e42Linux 5.15Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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