CVE-2026-23226
ksmbd: add chann_lock to protect ksmbd_chann_list xarray
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.1.191, 5.16, 6.3, 6.6.160, 6.12.77, and 2 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 6.1.29 · fixed in 6.1.191; From 5.15.145 · fixed in 5.16; From 6.2.16 · fixed in 6.3
- Linux Linux
6.3
- KernelLinux
From 6.3.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.77; From 6.13.0 · fixed in 6.18.11; From 6.19.0 · fixed in 6.19.1