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CVE

CVE-2026-64056

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

CVE-2026-64056

net: ethernet: cortina: Make RX SKB per-port

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 napigrofrags(), on error (after

calling napifreefrags()) 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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://git.kernel.org/stable/c/06937db21ee311ed07eba47954447245041a982d, https://git.kernel.org/stable/c/27856d533eca3804008695f61c1e4d5ff984196b, https://git.kernel.org/stable/c/3b249988d774dacf13b203817e971934a42243c4, https://git.kernel.org/stable/c/67a35e7da7ef9d2f000aa758552a128324c604a0, https://git.kernel.org/stable/c/6bba24e9ebe6f1c0b356cd471e36bdc7fa434897, https://git.kernel.org/stable/c/72158ea185b27afae163949b0e86164cb6b64e55, https://git.kernel.org/stable/c/b6b22824b30e48ce1df3a2e80990f4b8505deb50, https://git.kernel.org/stable/c/cfd62907f3cdbc3b6da8f49ba907c0390018fe5e, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64056.json, https://nvd.nist.gov/vuln/detail/CVE-2026-64056, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.00552%
EPSS Percentile
0.43913%
Introduced Version
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88,4.16.0,5.11.0,5.16.0,6.2.0,6.7.0,6.13.0,6.19.0,0
Fix Available
06937db21ee311ed07eba47954447245041a982d,5.10.258,5.15.209,6.1.175,6.6.142,6.12.92,6.18.34,7.0.11,6.1.176-1,6.12.94-1,5.15.0-1112.119~20.04.1,5.15.0-1117.126~20.04.1,5.15.0-1117.126~20.04.2,5.15.0-1112.122~20.04.1,5.15.0-186.196~20.04.1,5.15.0-1106.110~20.04.1,5.15.0-1107.113~20.04.1,5.15.0-184.194~20.04.1,5.15.0-1064.66~20.04.1,5.15.0-1109.115~20.04.1,7.0.0-28.28~24.04.1,7.0.0-1016.16~24.04.1,7.0.0-28.28.1~24.04.3,5.15.0-186.196,5.15.0-1112.119,5.15.0-1117.126,5.15.0-1112.122,5.15.0-1108.114,5.15.0-1095.103,5.15.0-1106.110,5.15.0-1107.113,5.15.0-1104.109,5.15.0-184.194,5.15.0-1107.108,5.15.0-1064.66,5.15.0-1053.53,5.15.0-1109.115,5.15.0-1075.79

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