CVE-2026-23226
ksmbd: add chann_lock to protect ksmbd_chann_list xarray
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: ksmbd: add chann_lock to protect ksmbd_chann_list xarray ksmbd_chann_list xarray lacks synchronization, allowing use-after-free in multi-channel sessions (between lookup_chann_list() and ksmbd_chann_del). Adds rw_semaphore chann_lock to struct ksmbd_session and protects all xa_load/xa_store/xa_erase accesses.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Feb 18, 2026 |
| Last Updated | Apr 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
1d9c4172110e645b383ff13eee759728d74f1a5d < 4c2ca31608521895dd742a43beca4b4d29762345 1d9c4172110e645b383ff13eee759728d74f1a5d < e4a8a96a93d08570e0405cfd989a8a07e5b6ff33 1d9c4172110e645b383ff13eee759728d74f1a5d < 36ef605c0395b94b826a8c8d6f2697071173de6e 1d9c4172110e645b383ff13eee759728d74f1a5d < 4f3a06cc57976cafa8c6f716646be6c79a99e485 b1caecbf34b8c8260d851ec4efde71f3694460b7 91bbf9cb2387a0d76322e9a343bc6bc160f66b3f 853c416710b075153c1e1421e099ffbe5dac68ce
Linux / Linux
6.3
References
git.kernel.org: https://git.kernel.org/stable/c/4c2ca31608521895dd742a43beca4b4d29762345 git.kernel.org: https://git.kernel.org/stable/c/e4a8a96a93d08570e0405cfd989a8a07e5b6ff33 git.kernel.org: https://git.kernel.org/stable/c/36ef605c0395b94b826a8c8d6f2697071173de6e git.kernel.org: https://git.kernel.org/stable/c/4f3a06cc57976cafa8c6f716646be6c79a99e485