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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-64056
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:46 UTC
Updated2026-07-20 15:17:06 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001840000 probability, percentile 0.082500000 (date 2026-07-20)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 27856d533eca3804008695f61c1e4d5ff984196b git Not specified
CNA Linux Linux affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 b6b22824b30e48ce1df3a2e80990f4b8505deb50 git Not specified
CNA Linux Linux affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 6bba24e9ebe6f1c0b356cd471e36bdc7fa434897 git Not specified
CNA Linux Linux affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 3b249988d774dacf13b203817e971934a42243c4 git Not specified
CNA Linux Linux affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 72158ea185b27afae163949b0e86164cb6b64e55 git Not specified
CNA Linux Linux affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 cfd62907f3cdbc3b6da8f49ba907c0390018fe5e git Not specified
CNA Linux Linux affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 67a35e7da7ef9d2f000aa758552a128324c604a0 git Not specified
CNA Linux Linux affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 06937db21ee311ed07eba47954447245041a982d git Not specified
CNA Linux Linux affected 4.16 Not specified
CNA Linux Linux unaffected 4.16 semver Not specified
CNA Linux Linux unaffected 5.10.258 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.209 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.175 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.142 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.92 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.34 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.11 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/cfd62907f3cdbc3b6da8f49ba907c0390018fe5e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3b249988d774dacf13b203817e971934a42243c4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b6b22824b30e48ce1df3a2e80990f4b8505deb50 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/67a35e7da7ef9d2f000aa758552a128324c604a0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/06937db21ee311ed07eba47954447245041a982d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/72158ea185b27afae163949b0e86164cb6b64e55 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/27856d533eca3804008695f61c1e4d5ff984196b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6bba24e9ebe6f1c0b356cd471e36bdc7fa434897 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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