CVE-2026-23226
High
Description
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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Linux Kernel
PublishedFeb 18, 2026
First seenFeb 18, 2026
How to fix
Update
- linux linux_kernel6.18.11, 6.19.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.3 ≤ v < 6.18.11, 6.19 ≤ v < 6.19.1 | 6.18.11, 6.19.1 |
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