What’s Vulnerable › Vulnerabilities

CVE-2026-97567: mptcp: prevent race between disconnect() and rtx

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-25 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: mptcp: prevent race between disconnect() and rtx Sashiko noted that the two event can race, leading to inconsistent status. Prevent the race using the synchronous timer stop operation.

Affected products

• Linux: 5.17 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1a68a88369c0ab6309bd17f7e408290c5cb80dcf
• https://git.kernel.org/stable/c/2261f857ef4e0d21eb1a8b47b06640cf7ab16d3e
• https://git.kernel.org/stable/c/374da2b9be1280695ce41f108334a8f16e3e54be
• https://git.kernel.org/stable/c/69a7b2a912672159dda7dcf325d27752d448dfdf
• https://git.kernel.org/stable/c/75b3b30ae4ee6aa0572595f6b48544ed4f479eb6
• https://git.kernel.org/stable/c/85c580b0d8590520ae00a15c29e9fb9c99427a3e

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