Not yet scoredPublished Sep 17, 2026

CVE-2026-90152smb/server: fix session leak in ksmbd_session_register()

Updated under an hour ago (Oct 27, 2026, 6:10 AM ET)

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

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: smb/server: fix session leak in ksmbd_session_register() See the procedure below: smb2_sess_setup ksmbd_smb2_session_create __session_create atomic_set(&sess->refcnt, 2) hash_add(sessions_table, &sess->hlist, sess->id) ksmbd_session_register xa_store(&conn->sessions, sess->id, sess) // fail ksmbd_user_session_put atomic_dec(&sess->refcnt) // refcnt is 1, session is not freed Remove the session from sessions_table and drop its table reference if xa_store() fails.

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 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from f5c779b7ddbda30866cf2a27c63e34158f858c73 before 988f99bfddda4e2d1da5f6e98b237dd85e123cee; from f5c779b7ddbda30866cf2a27c63e34158f858c73 before 03a22a003f41b182245e6c71fe565e277cff7094; from f5c779b7ddbda30866cf2a27c63e34158f858c73 before b967a595fb735d313a8676b2ca6a4cba38506482; from f5c779b7ddbda30866cf2a27c63e34158f858c73 before 55c677619084f9c9fa4146d933cc8ccafc924c87; from f5c779b7ddbda30866cf2a27c63e34158f858c73 before 99b25b046e47e4904373cfeb445c5483f1633d88; 708c304b583d789957399dd8237f212cf8ad1e4d; f623f627ad2b1dc215ab3b0df53fb05cfd3a1c3b; d270631c21e68fb8016d6e231d022d7023a2df6f; and 5 more ranges	CNA record

References

References

https://git.kernel.org/stable/c/988f99bfddda4e2d1da5f6e98b237dd85e123cee
https://git.kernel.org/stable/c/03a22a003f41b182245e6c71fe565e277cff7094
https://git.kernel.org/stable/c/b967a595fb735d313a8676b2ca6a4cba38506482
https://git.kernel.org/stable/c/55c677619084f9c9fa4146d933cc8ccafc924c87
https://git.kernel.org/stable/c/99b25b046e47e4904373cfeb445c5483f1633d88

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.