Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 2107ab40629aeabbec369cf34b8cf0f288c3eb1b before 11fe566b442e3bc2774191740fd377739a87a1c0; affected 37a0e2b362b3150317fb6e2139de67b1e29ae5ff before 0fb87b28cafae71e9c8248432cc3a6a1fd759efc; affected 450a844c045ff0895d41b05a1cbe8febd1acfcfd before e54fb2a4772545701766cba08aab20de5eace8cd; affected a39e31e22a535d47b14656a7d6a893c7f6cf758c before 02e06785e85b4bd86ef3d23b7c8d87acc76773d5; affected b95629435b84b9ecc0c765995204a4d8a913ed52 before 8cabcb4dd3dc85dd83a37d26efcc59a66a4074d7; affected b95629435b84b9ecc0c765995204a4d8a913ed52 before cafb57f7bdd57abba87725eb4e82bbdca4959644; affected 5.15.176 before 5.15.203; affected 6.1.121 before 6.1.160; affected 6.6.67 before 6.6.120; affected 6.12.6 before 6.12.64 |
| Linux / Linux | affected 6.13; unaffected 0 before 6.13; unaffected 5.15.203 through 5.15.*; unaffected 6.1.160 through 6.1.*; unaffected 6.6.120 through 6.6.*; unaffected 6.12.64 through 6.12.*; unaffected 6.18.3 through 6.18.*; unaffected 6.19 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/11fe566b442e3bc2774191740fd377739a87a1c0
- https://git.kernel.org/stable/c/0fb87b28cafae71e9c8248432cc3a6a1fd759efc
- https://git.kernel.org/stable/c/e54fb2a4772545701766cba08aab20de5eace8cd
- https://git.kernel.org/stable/c/02e06785e85b4bd86ef3d23b7c8d87acc76773d5
- https://git.kernel.org/stable/c/8cabcb4dd3dc85dd83a37d26efcc59a66a4074d7
- https://git.kernel.org/stable/c/cafb57f7bdd57abba87725eb4e82bbdca4959644