CVE-2026-64056net: ethernet: cortina: Make RX SKB per-port
- 9.8CriticalCVSS base score
- 0.55%Exploitation in 30 daysEPSS · top 53% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
Published
- 17 days later
· 17 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.55% · top 53% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
- affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 – < 27856d533eca3804008695f61c1e4d5ff984196b
- affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 – < b6b22824b30e48ce1df3a2e80990f4b8505deb50
- affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 – < 6bba24e9ebe6f1c0b356cd471e36bdc7fa434897
- affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 – < 3b249988d774dacf13b203817e971934a42243c4
- affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 – < 72158ea185b27afae163949b0e86164cb6b64e55
- affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 – < cfd62907f3cdbc3b6da8f49ba907c0390018fe5e
- affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 – < 67a35e7da7ef9d2f000aa758552a128324c604a0
- affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 – < 06937db21ee311ed07eba47954447245041a982d
- affected 4.16
- unaffected < 4.16
- unaffected 5.10.258 – ≤ 5.10.*
- unaffected 5.15.209 – ≤ 5.15.*
- unaffected 6.1.175 – ≤ 6.1.*
- unaffected 6.6.142 – ≤ 6.6.*
- unaffected 6.12.92 – ≤ 6.12.*
- unaffected 6.18.34 – ≤ 6.18.*
- unaffected 7.0.11 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References8
- https://git.kernel.org/stable/c/27856d533eca3804008695f61c1e4d5ff984196b (opens in a new tab)
- https://git.kernel.org/stable/c/b6b22824b30e48ce1df3a2e80990f4b8505deb50 (opens in a new tab)
- https://git.kernel.org/stable/c/6bba24e9ebe6f1c0b356cd471e36bdc7fa434897 (opens in a new tab)
- https://git.kernel.org/stable/c/3b249988d774dacf13b203817e971934a42243c4 (opens in a new tab)
- https://git.kernel.org/stable/c/72158ea185b27afae163949b0e86164cb6b64e55 (opens in a new tab)
- https://git.kernel.org/stable/c/cfd62907f3cdbc3b6da8f49ba907c0390018fe5e (opens in a new tab)
- https://git.kernel.org/stable/c/67a35e7da7ef9d2f000aa758552a128324c604a0 (opens in a new tab)
- https://git.kernel.org/stable/c/06937db21ee311ed07eba47954447245041a982d (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-45629 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-64056)Record last updated .