Critical 9.8Published Jul 19, 2026

CVE-2026-64056net: ethernet: cortina: Make RX SKB per-port

Updated under an hour ago (Oct 26, 2026, 9:30 PM ET)

Does this affect you?

It affects Linux and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: cortina: Make RX SKB per-port The SKB used to assemble packets from fragments in gmac_rx() is static local, but the Gemini has two ethernet ports, meaning there can be races between the ports on a bad day if a device is using both. Make the RX SKB a per-port variable and carry it over between invocations in the port struct instead. Zero the pointer once we call napi_gro_frags(), on error (after calling napi_free_frags()) or if the port is stopped. Zero it in some place where not strictly necessary just to emphasize what is going on. This was found by Sashiko during normal patch review.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 before 27856d533eca3804008695f61c1e4d5ff984196b; from 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 before b6b22824b30e48ce1df3a2e80990f4b8505deb50; from 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 before 6bba24e9ebe6f1c0b356cd471e36bdc7fa434897; 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 builds before 3b249988d774dacf13b203817e971934a42243c4; from 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 before 72158ea185b27afae163949b0e86164cb6b64e55; from 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 before cfd62907f3cdbc3b6da8f49ba907c0390018fe5e; from 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 before 67a35e7da7ef9d2f000aa758552a128324c604a0; from 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 before 06937db21ee311ed07eba47954447245041a982d	CNA record
linux linux_kernel linux:linux_kernel	from 4.16 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.142; from 6.7 before 6.12.92; from 6.13 before 6.18.34; from 6.19 before 7.0.11; 7.1; and 2 more ranges	NVD

References

References

https://git.kernel.org/stable/c/27856d533eca3804008695f61c1e4d5ff984196b	patch
https://git.kernel.org/stable/c/b6b22824b30e48ce1df3a2e80990f4b8505deb50	patch
https://git.kernel.org/stable/c/6bba24e9ebe6f1c0b356cd471e36bdc7fa434897	patch
https://git.kernel.org/stable/c/3b249988d774dacf13b203817e971934a42243c4	patch
https://git.kernel.org/stable/c/72158ea185b27afae163949b0e86164cb6b64e55	patch
https://git.kernel.org/stable/c/cfd62907f3cdbc3b6da8f49ba907c0390018fe5e	patch
https://git.kernel.org/stable/c/67a35e7da7ef9d2f000aa758552a128324c604a0	patch
https://git.kernel.org/stable/c/06937db21ee311ed07eba47954447245041a982d	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.