CVE-2025-39819None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: fs/smb: Fix inconsistent refcnt update A possible inconsistent update of refcount was identified in `smb2_compound_op`. Such inconsistent update could lead to possible…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
In the Linux kernel, the following vulnerability has been resolved:
fs/smb: Fix inconsistent refcnt update
A possible inconsistent update of refcount was identified in smb2_compound_op.
Such inconsistent update could lead to possible resource leaks.
Why it is a possible bug:
cfile should be dropped after calling this function.cfile, except the patched one.cfile if
-ENOMEM is returned.To fix the bug, an extra goto label "out" is added, to make sure that the
cleanup logic would always be respected. As the problem is caused by the
allocation failure of vars, the cleanup logic between label "finished"
and "out" can be safely ignored. According to the definition of function
is_replayable_error, the error code of "-ENOMEM" is not recoverable.
Therefore, the replay logic also gets ignored.
Linux >= a7d5c294628088781da9e91cbb034d61c3a71f71 < 3fc11ff13fbc2749871d6ac2141685cf54699997Linux >= a7d5c294628088781da9e91cbb034d61c3a71f71 < 4191ea1f0bb3e27d65c5dcde7bd00e709ec67141Linux >= a7d5c294628088781da9e91cbb034d61c3a71f71 < 4735f5991f51468b85affb8366b7067248457a71Linux >= a7d5c294628088781da9e91cbb034d61c3a71f71 < cc82c6dff548f0066a51a6e577c7454e7d26a968Linux >= a7d5c294628088781da9e91cbb034d61c3a71f71 < ab529e6ca1f67bcf31f3ea80c72bffde2e9e053eLinux 5.8Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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