CVE-2026-97568

In the Linux kernel, the following vulnerability has been resolved: mptcp: syncookies: remember the request backup flag Instead of using an uninitialised bit when copying the info in subflow_ulp_clone(). To fix this, no need to extend the join_entry structure: backup is coming from struct mptcp_subflow_request_sock, only one bit. Do the same here by using one bit for both.

EPSS

0.2% chance of exploitation in the next 30 days; higher than 11% of CVEs (scores of 2026-10-25)

Published

2026-09-25

Modified

2026-10-19

Record from

the NVD, synced 2026-10-19

References

• https://git.kernel.org/stable/c/00b2bd518911e0daab00f4749cce68c191ccebb4
• https://git.kernel.org/stable/c/06d649f9cd03a9f8e768a658b20acf8d2c8022e0
• https://git.kernel.org/stable/c/1668b34452009d27be3262646de748a3e48ffd51
• https://git.kernel.org/stable/c/360d99258a6402cb8e49771460944f19f04d25b7
• https://git.kernel.org/stable/c/61178d0b85b4b1b53e78b06e89d018d22d102f88

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