Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mptcp: reclaim forward-allocated memory on RX path errors After commit 9db5b3cec4ec ("mptcp: borrow forward memory from subflow"), errors in the receive path prior to queueing skbs into the receive queue do not trigger forward-allocated memory reclaiming. Prevent forward memory from growing unboundedly in pathological drop scenarios by explicitly reclaiming memory when skbs are dropped.
CVSS Score
HIGH
References
- https://git.kernel.org/stable/c/41b49a8b914ec7dcb03eae93fb27f3c464078644
- https://git.kernel.org/stable/c/473f1a5ab2abc98dd9e74b95b9c23c66c47535cc
- https://git.kernel.org/stable/c/8277f48a06d3aa1441f6d0b6998ccc0360d30ed8
FAQ
What is CVE-2026-80588?
CVE-2026-80588 is a vulnerability with a CVSS score of 7.5 (HIGH). In the Linux kernel, the following vulnerability has been resolved: mptcp: reclaim forward-allocated memory on RX path errors After commit 9db5b3cec4ec ("mptcp: borrow forward memory from subflow"),...
How severe is CVE-2026-80588?
CVE-2026-80588 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-80588?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.