mptcp: close race between scheduler and state change
In the Linux kernel, the following vulnerability has been resolved: mptcp: close race between scheduler and state change The mptcp scheduler may race with subflow sockets state change: data transmission on the selected socket may fail and a later release could try to use mss_now reset to 0 for a divide operation. Address the issue by explicitly checking for the critical scenario.
CVE-2026-97523
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-2026-97523
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": "fb9c73ef2ac2ec816efdc8b9267bc04e1369c20b",
"lessThan": "d74b2e26b54a7dae1d87c1f19ae0d6db500e5e03",
"versionType": "git"
},
{
"status": "affected",
"version": "c886d70286bf3ad411eb3d689328a67f7102c6ae",
"lessThan": "5883ae880f51edc4b1484e787473b865b6159ead",
"versionType": "git"
},
{
"status": "affected",
"version": "c886d70286bf3ad411eb3d689328a67f7102c6ae",
"lessThan": "0a926b5df8efdfbac07e2fb7fafb21849a2ad9c0",
"versionType": "git"
},
{
"status": "affected",
"version": "c886d70286bf3ad411eb3d689328a67f7102c6ae",
"lessThan": "8f11430d51ff8365bc51b670bc3002b65ae4c6b7",
"versionType": "git"
},
{
"status": "affected",
"version": "c886d70286bf3ad411eb3d689328a67f7102c6ae",
"lessThan": "a09c87abf10a0a7e203137c75b5381aa63d9b31d",
"versionType": "git"
},
{
"status": "affected",
"version": "c886d70286bf3ad411eb3d689328a67f7102c6ae",
"lessThan": "4c856f3c151a2f3fa237caa651c44015916ca584",
"versionType": "git"
},
{
"status": "affected",
"version": "c886d70286bf3ad411eb3d689328a67f7102c6ae",
"lessThan": "42064de57fb83231fcc89663a94885f228a1ee53",
"versionType": "git"
},
{
"status": "affected",
"version": "8caf5c15b5288d52d9c89374d6c10fa32ee84ec5",
"versionType": "git"
},
{
"status": "affected",
"version": "5.15.190",
"lessThan": "5.15.222",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.19.4",
"lessThan": "5.20",
"versionType": "semver"
}
],
"programFiles": [
"net/mptcp/protocol.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/mptcp/protocol.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-97523
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #37984 · Revision 1
- Added to Heist Feed
- Publisher date