CVE-2026-97523
mptcp: close race between scheduler and state change
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 25, 2026 |
| Last Updated | Oct 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
fb9c73ef2ac2ec816efdc8b9267bc04e1369c20b < d74b2e26b54a7dae1d87c1f19ae0d6db500e5e03 c886d70286bf3ad411eb3d689328a67f7102c6ae < 5883ae880f51edc4b1484e787473b865b6159ead c886d70286bf3ad411eb3d689328a67f7102c6ae < 0a926b5df8efdfbac07e2fb7fafb21849a2ad9c0 c886d70286bf3ad411eb3d689328a67f7102c6ae < 8f11430d51ff8365bc51b670bc3002b65ae4c6b7 c886d70286bf3ad411eb3d689328a67f7102c6ae < a09c87abf10a0a7e203137c75b5381aa63d9b31d c886d70286bf3ad411eb3d689328a67f7102c6ae < 4c856f3c151a2f3fa237caa651c44015916ca584 c886d70286bf3ad411eb3d689328a67f7102c6ae < 42064de57fb83231fcc89663a94885f228a1ee53 8caf5c15b5288d52d9c89374d6c10fa32ee84ec5 5.15.190 < 5.15.222 5.19.4 < 5.20
Linux / Linux
6.0
References
git.kernel.org: https://git.kernel.org/stable/c/d74b2e26b54a7dae1d87c1f19ae0d6db500e5e03 git.kernel.org: https://git.kernel.org/stable/c/5883ae880f51edc4b1484e787473b865b6159ead git.kernel.org: https://git.kernel.org/stable/c/0a926b5df8efdfbac07e2fb7fafb21849a2ad9c0 git.kernel.org: https://git.kernel.org/stable/c/8f11430d51ff8365bc51b670bc3002b65ae4c6b7 git.kernel.org: https://git.kernel.org/stable/c/a09c87abf10a0a7e203137c75b5381aa63d9b31d git.kernel.org: https://git.kernel.org/stable/c/4c856f3c151a2f3fa237caa651c44015916ca584 git.kernel.org: https://git.kernel.org/stable/c/42064de57fb83231fcc89663a94885f228a1ee53