Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: cifs: Fix server use-after-free in cifs_chan_skip_or_disable() When a secondary channel is no longer supported by the server, cifs_chan_skip_or_disable() drops the channel reference with cifs_put_tcp_session() and then continues to use the server pointer by calling cifs_signal_cifsd_for_reconnect() on it and reading its primary_server pointer. cifs_put_tcp_session() can drop the last reference of the channel and tear it down, so both the channel and the primary server (whose reference is also dropped by cifs_put_tcp_session()) can be freed before they are signaled for reconnect. Signal the channel and the primary server and capture the primary server pointer before dropping the channel reference with cifs_put_tcp_session().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 50e8363ecc85da49764781da90ebffe1a657b370 before 0338489960ddad6368bce55e8adbc176c523093d; affected f591062bdbf4742b7f1622173017f19e927057b0 before edd52eae5fcfb8433b6bb0e7cd98db438fe01227; affected f591062bdbf4742b7f1622173017f19e927057b0 before fcc0a935bb6e37ecbf7e4335061309f896f35780; affected f591062bdbf4742b7f1622173017f19e927057b0 before 7a1b27780b113583a94256d58dabfe7c0d9286e7; affected f591062bdbf4742b7f1622173017f19e927057b0 before 717e0a25036b6c92cecace30913b2d874a4c22b8; affected d61ba1d71ea6039eca7ada870bf3f0c3c8fc12e4; affected 6.6.15 before 6.6.158; affected 6.7.3 before 6.8 |
| Linux / Linux | affected 6.8; unaffected 0 before 6.8; unaffected 6.6.158 through 6.6.*; unaffected 6.12.112 through 6.12.*; unaffected 6.18.54 through 6.18.*; unaffected 7.2.8 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/0338489960ddad6368bce55e8adbc176c523093d
- https://git.kernel.org/stable/c/edd52eae5fcfb8433b6bb0e7cd98db438fe01227
- https://git.kernel.org/stable/c/fcc0a935bb6e37ecbf7e4335061309f896f35780
- https://git.kernel.org/stable/c/7a1b27780b113583a94256d58dabfe7c0d9286e7
- https://git.kernel.org/stable/c/717e0a25036b6c92cecace30913b2d874a4c22b8