ksmbd: safely drain sessions during logoff
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.
CVE-2026-98115
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98115
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "76e98a158b207771a6c9a0de0a60522a446a3447",
"lessThan": "a7e6df0bb92642bee4431b2b85c69ada1e463b21",
"versionType": "git"
},
{
"status": "affected",
"version": "76e98a158b207771a6c9a0de0a60522a446a3447",
"lessThan": "d12168084c8c1b6d883c8eca5853929ac5136a9e",
"versionType": "git"
},
{
"status": "affected",
"version": "118fd997612d1efc94a86c307c6c6d659ebe29fc",
"versionType": "git"
},
{
"status": "affected",
"version": "c1e55020534c4aafbc38d8f5c4583ff30755ac18",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.48",
"lessThan": "6.7",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.10.7",
"lessThan": "6.11",
"versionType": "semver"
}
],
"programFiles": [
"fs/smb/server/connection.c",
"fs/smb/server/mgmt/user_session.c",
"fs/smb/server/mgmt/user_session.h",
"fs/smb/server/smb2pdu.c",
"fs/smb/server/vfs_cache.c",
"fs/smb/server/vfs_cache.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.11"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.11",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/smb/server/connection.c",
"fs/smb/server/mgmt/user_session.c",
"fs/smb/server/mgmt/user_session.h",
"fs/smb/server/smb2pdu.c",
"fs/smb/server/vfs_cache.c",
"fs/smb/server/vfs_cache.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98115
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #38213 · Revision 1
- Added to Heist Feed
- Publisher date