CVE-2026-80588

highCVSS 7.5covered by 1 sourcefirst seen 2026-08-26

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.

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Exploitation outlook

Low exploitation risk0.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 27% of all EPSS-scored CVEs.

Advisory coverage (1)

highCVE-2026-80588: In the Linux kernel, the following vulnerability has been resolved: mptcp: reclaim forward-all…nvd · 2026-08-26

External references

NVD record for CVE-2026-80588

CVE.org record

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