CVE-2026-97523

HIGHCVSS 7.5/10

Last modified

CVE-2026-97523 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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..

Description

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.

Metrics

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= c886d70286bf3ad411eb3d689328a67f7102c6ae, < 8f11430d51ff8365bc51b670bc3002b65ae4c6b7; >= c886d70286bf3ad411eb3d689328a67f7102c6ae, < a09c87abf10a0a7e203137c75b5381aa63d9b31d; >= c886d70286bf3ad411eb3d689328a67f7102c6ae, < 4c856f3c151a2f3fa237caa651c44015916ca584; >= c886d70286bf3ad411eb3d689328a67f7102c6ae, < 42064de57fb83231fcc89663a94885f228a1ee53; fb9c73ef2ac2ec816efdc8b9267bc04e1369c20b; 8caf5c15b5288d52d9c89374d6c10fa32ee84ec5; >= 5.15.190, < 5.16; >= 5.19.4, < 5.20
LinuxLinux6.0

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-97523?
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.
How severe is CVE-2026-97523?
CVE-2026-97523 has a CVSS score of 7.5/10 (HIGH severity).
How do I fix CVE-2026-97523?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST