CVE-2026-97523
Published: September 29, 2026Last modified: October 6, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.189-r0) |
| 25 LTS | linux-lts | Fixed (6.12.111-r0) | |
| Stream | linux-lts | Fixed (6.18.53-r0) |
References
- https://git.kernel.org/stable/c/0a926b5df8efdfbac07e2fb7fafb21849a2ad9c0
- https://git.kernel.org/stable/c/42064de57fb83231fcc89663a94885f228a1ee53
- https://git.kernel.org/stable/c/4c856f3c151a2f3fa237caa651c44015916ca584
- https://git.kernel.org/stable/c/5883ae880f51edc4b1484e787473b865b6159ead
- https://git.kernel.org/stable/c/8f11430d51ff8365bc51b670bc3002b65ae4c6b7
- https://git.kernel.org/stable/c/a09c87abf10a0a7e203137c75b5381aa63d9b31d
- https://git.kernel.org/stable/c/d74b2e26b54a7dae1d87c1f19ae0d6db500e5e03