CVE-2025-71150
HIGH severity · CVSS 7.5
7.5CVSS HIGH
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix refcount leak when invalid session is found on session lookup When a session is found but its state is not SMB2_SESSION_VALID, It indicates that no valid session was found, but it is missing to decrement the reference count acquired by the session lookup, which results in a reference count leak. This patch fixes the issue by explicitly calling ksmbd_user_session_put to release the reference to the session.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/02e06785e85b4bd86ef3d23b7c8d87acc76773d5 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/02e06785e85b4bd86ef3d23b7c8d87acc76773d5Patch
- https://git.kernel.org/stable/c/0fb87b28cafae71e9c8248432cc3a6a1fd759efcPatch
- https://git.kernel.org/stable/c/8cabcb4dd3dc85dd83a37d26efcc59a66a4074d7Patch
- https://git.kernel.org/stable/c/cafb57f7bdd57abba87725eb4e82bbdca4959644Patch
- https://git.kernel.org/stable/c/e54fb2a4772545701766cba08aab20de5eace8cdPatch
- https://git.kernel.org/stable/c/11fe566b442e3bc2774191740fd377739a87a1c0