Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential deadlock when releasing mids All release_mid() callers seem to hold a reference of @mid so there is no need to call kref_put(&mid->refcount, __release_mid) under @server->mid_lock spinlock. If they don't, then an use-after-free bug would have occurred anyways. By getting rid of such spinlock also fixes a potential deadlock as shown below CPU 0 CPU 1 ------------------------------------------------------------------ cifs_demultiplex_thread() cifs_debug_data_proc_show() release_mid() spin_lock(&server->mid_lock); spin_lock(&cifs_tcp_ses_lock) spin_lock(&server->mid_lock) __release_mid() smb2_find_smb_tcon() spin_lock(&cifs_tcp_ses_lock) *deadlock*
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 7b71843fa7028475b052107664cbe120156a2cfc before 99f476e27aad5964ab13777d84fda67d1356dec1; affected 7b71843fa7028475b052107664cbe120156a2cfc before ce49569079a9d4cad26c0f1d4653382fd9a5ca7a; affected 7b71843fa7028475b052107664cbe120156a2cfc before 9eb44db68c5b7f5aa22b8fc7de74a3e2e08d1f29; affected 7b71843fa7028475b052107664cbe120156a2cfc before b9bb9607b1fc12fca51f5632da25b36975f599bf; affected 7b71843fa7028475b052107664cbe120156a2cfc before c1a5962f1462b64fe7b69f20a4b6af8067bc2d26; affected 7b71843fa7028475b052107664cbe120156a2cfc before e6322fd177c6885a21dd4609dc5e5c973d1a2eb7; affected 9871dea42034ee6e73bb2b97ba0284d3d462b230; affected 5.4.6 before 5.5 |
| Linux / Linux | affected 5.5; unaffected 0 before 5.5; unaffected 5.10.237 through 5.10.*; unaffected 5.15.181 through 5.15.*; unaffected 6.1.64 through 6.1.*; unaffected 6.5.13 through 6.5.*; unaffected 6.6.3 through 6.6.*; unaffected 6.7 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/99f476e27aad5964ab13777d84fda67d1356dec1
- https://git.kernel.org/stable/c/ce49569079a9d4cad26c0f1d4653382fd9a5ca7a
- https://git.kernel.org/stable/c/9eb44db68c5b7f5aa22b8fc7de74a3e2e08d1f29
- https://git.kernel.org/stable/c/b9bb9607b1fc12fca51f5632da25b36975f599bf
- https://git.kernel.org/stable/c/c1a5962f1462b64fe7b69f20a4b6af8067bc2d26
- https://git.kernel.org/stable/c/e6322fd177c6885a21dd4609dc5e5c973d1a2eb7
ADP enrichment
No English description supplied.
- https://git.kernel.org/stable/c/9eb44db68c5b7f5aa22b8fc7de74a3e2e08d1f29
- https://git.kernel.org/stable/c/b9bb9607b1fc12fca51f5632da25b36975f599bf
- https://git.kernel.org/stable/c/c1a5962f1462b64fe7b69f20a4b6af8067bc2d26
- https://git.kernel.org/stable/c/e6322fd177c6885a21dd4609dc5e5c973d1a2eb7
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
No English description supplied.
No references supplied.