9.8

CVE-2026-64056: linux

CVSS: 9.8v3.1CriticalAnalyzed
AliasesUBUNTU-CVE-2026-64056DEBIAN-CVE-2026-64056
Published 19-07-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-64056 is a critical (CVSS 9.8) vulnerability in linux. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 44.9% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.55%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 39 · Related 39
OPENSUSE-SU-2026:21910-1SUSE-SU-2026:23881-1SUSE-SU-2026:23887-1SUSE-SU-2026:23897-1SUSE-SU-2026:23902-1SUSE-SU-2026:4120-1

Timeline

  1. 19-07-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.55%

Chance of exploitation in the next 30 days

Percentile

45%

Versus all other CVEs

30-day change

0.00 pp

From 0.55% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.55%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu163 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-139.139 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1064.67 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, < 27856d533eca3804008695f61c1e4d5ff984196b | ≥ 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, < b6b22824b30e48ce1df3a2e80990f4b8505deb50 | ≥ 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, < 6bba24e9ebe6f1c0b356cd471e36bdc7fa434897 | ≥ 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, < 3b249988d774dacf13b203817e971934a42243c4 | ≥ 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, < 72158ea185b27afae163949b0e86164cb6b64e55 | ≥ 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, < cfd62907f3cdbc3b6da8f49ba907c0390018fe5e | ≥ 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, < 67a35e7da7ef9d2f000aa758552a128324c604a0 | ≥ 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, < 06937db21ee311ed07eba47954447245041a982d | 4.16
  • linux_kernel≥ 4.16, < 5.10.258 | ≥ 5.11, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.142 | ≥ 6.7, < 6.12.92 | ≥ 6.13, < 6.18.34 | ≥ 6.19, < 7.0.11 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.12-1

3 vendors · 166 products

References

44 links
Show all 44 references