CVE-2026-80588

high

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.

References

https://git.kernel.org/stable/c/8277f48a06d3aa1441f6d0b6998ccc0360d30ed8

https://git.kernel.org/stable/c/473f1a5ab2abc98dd9e74b95b9c23c66c47535cc

https://git.kernel.org/stable/c/41b49a8b914ec7dcb03eae93fb27f3c464078644

Details

Source: Mitre, NVD

Published: 2026-08-26

Updated: 2026-08-27

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High

EPSS

EPSS: 0.00339