CVE-2026-98115ksmbd: safely drain sessions during logoff
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: ksmbd: safely drain sessions during logoff SMB3 multichannel allows requests for one session to run on multiple connections. Wait for all channels bound to a session before freeing shared session objects. A deferred byte-range lock remains counted as a running request and only wakes when its file closes. Wake blocked locks during the drain without unpublishing or modifying their file objects. Synchronous CANCEL requests must invoke their cancellation callback to wake pending operations, while CHANGE_NOTIFY completion remains specific to the asynchronous path. Serialize session teardown with channel registration and previous-session cleanup, and use atomic work-state transitions so LOGOFF, CANCEL, and connection teardown invoke cancellation callbacks only once.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- 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
- Undergoing Analysis
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 76e98a158b207771a6c9a0de0a60522a446a3447 before a7e6df0bb92642bee4431b2b85c69ada1e463b21; from 76e98a158b207771a6c9a0de0a60522a446a3447 before d12168084c8c1b6d883c8eca5853929ac5136a9e; 118fd997612d1efc94a86c307c6c6d659ebe29fc; c1e55020534c4aafbc38d8f5c4583ff30755ac18; from 6.6.48 before 6.7; from 6.10.7 before 6.11 | CNA record |
linux linux_kernel linux:linux_kernel | from 6.6.48 before 6.7; from 6.10.7 before 6.11; from 6.11.1 before 7.2.7; 6.11; 6.11; 6.11; 6.11; 7.3 | NVD |
References
- https://git.kernel.org/stable/c/a7e6df0bb92642bee4431b2b85c69ada1e463b21patch
- https://git.kernel.org/stable/c/d12168084c8c1b6d883c8eca5853929ac5136a9epatch
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.