CVE-2026-90156ksmbd: safely discard unregistered deferred locks
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
In the Linux kernel, the following vulnerability has been resolved: ksmbd: safely discard unregistered deferred locks When vfs_lock_file() defers a lock, smb2_lock() puts its ksmbd_lock on rollback_list before allocating and registering the asynchronous work. If either operation fails, rollback assumes that smb_lock->conn is initialized and dereferences NULL. The deferred file_lock also remains linked into the VFS blocked-lock state while it is freed. Keep the lock off rollback_list until async setup succeeds. On setup failures, explicitly unblock and wake the deferred lock before freeing it and its ksmbd wrapper.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before 52b91bc5253bb83665f3ea70565d0b2487dae643; from e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before d09af9a35ff7b77a950b507133d9092aadbfeff4; from e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before 054bcca4cd9f00719b01f7108b51a2168fb94f15 | CNA record |
References
- https://git.kernel.org/stable/c/52b91bc5253bb83665f3ea70565d0b2487dae643
- https://git.kernel.org/stable/c/d09af9a35ff7b77a950b507133d9092aadbfeff4
- https://git.kernel.org/stable/c/054bcca4cd9f00719b01f7108b51a2168fb94f15
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.