CVE-2024-56729
MEDIUM severity · CVSS 4.7 · CWE-401
4.7CVSS MEDIUM
Summary
In the Linux kernel, the following vulnerability has been resolved: smb: Initialize cfid->tcon before performing network ops Avoid leaking a tcon ref when a lease break races with opening the cached directory. Processing the leak break might take a reference to the tcon in cached_dir_lease_break() and then fail to release the ref in cached_dir_offload_close, since cfid->tcon is still NULL.
Impact & exploitability
Attack vectorLocal
Attack complexityHigh
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/1b9ab6b648f89441c8a13cb3fd8ca83ffebc5262 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/1b9ab6b648f89441c8a13cb3fd8ca83ffebc5262Patch
- https://git.kernel.org/stable/c/4b216c8f9c7d84ef7de33ca60b97e08e03ef3292Patch
- https://git.kernel.org/stable/c/625e2357c8fcfae6e66dcc667dc656fe390bab15Patch
- https://git.kernel.org/stable/c/c353ee4fb119a2582d0e011f66a76a38f5cf984dPatch
- https://git.kernel.org/stable/c/269ff24a5b2b58600151e04e964d2043bfe1843c