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CVE-2026-80588

Last refreshed2026-10-17

Status: UPDATED  |  Advisory ID: CVE-2026-80588

Key Details

CVECVE-2026-80588
CVSS Score / Version
7.5 (High) / CVSS v3.1
Updated2026-10-16
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Prose
attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is none; integrity impact is none; availability impact is high.
Affected products
Linux Kernel

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
LinuxLinux Kernel
SubsystemsOT Supporting Infrastructure
SectorsAll Sectors

What to Know

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. (NVD)

What to Do

Monitor Linux's web page for any future patch releases.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-80588
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-80588

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