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Security Advisories

CVE-2026-23226

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-23226

Severity

Unknown
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Summary

ksmbd: add chann_lock to protect ksmbd_chann_list xarray

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.

References

Affected packages

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