9.8

CVE-2026-64000: linux Out-of-bounds Read

CVSS: 9.8v3.1CriticalModified
AliasesUBUNTU-CVE-2026-64000DEBIAN-CVE-2026-64000
Published 19-07-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-64000 is a critical (CVSS 9.8) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 40.9% 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
0.49%
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 151 · Related 151
OPENSUSE-SU-2026:21910-1SUSE-SU-2026:23477-1SUSE-SU-2026:23481-1SUSE-SU-2026:23528-1SUSE-SU-2026:23529-1SUSE-SU-2026:23881-1

Showing 100 of 151. Use Open JSON for the complete list.

Timeline

  1. 19-07-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: net: hsr: fix potential OOB access in supervision frame handling Ensure the entire TLV header is linearized before access by adding sizeof(struct hsr_sup_tlv) to the pskb_may_pull() calls. Without this, a truncated frame could cause an out-of-bounds access.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.49%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

0.00 pp

From 0.49% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.49%

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

Affected systems

Ubuntu140 products
  • linux< 6.8.0-142.142 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1065.68 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ eafaa88b3eb7f28aecb222281655473431d3ef2e, < 09a37dca090c55ffb1a33f52d8667f1c2367ef48 | ≥ eafaa88b3eb7f28aecb222281655473431d3ef2e, < a4b64f3e9c7b8259f7dd251a0313420ba7c01852 | ≥ eafaa88b3eb7f28aecb222281655473431d3ef2e, < 71c986c0ba45b7dc574fae27c83e7b6671556f37 | ≥ eafaa88b3eb7f28aecb222281655473431d3ef2e, < fbd0662f9c9a66e8cc3df3099cca8ed6d3837cc7 | ≥ eafaa88b3eb7f28aecb222281655473431d3ef2e, < 78607a6854a22a2502f68092202e75a39af4865d | ≥ eafaa88b3eb7f28aecb222281655473431d3ef2e, < f229426072fc865654a60978bb7fda790a051ff3 | 5.16
  • linux_kernel≥ 5.16, < 6.1.176 | ≥ 6.2, < 6.6.143 | ≥ 6.7, < 6.12.93 | ≥ 6.13, < 6.18.35 | ≥ 6.19, < 7.0.12 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4 | 7.1:rc5
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.12-1

3 vendors · 143 products

References

24 links
Show all 24 references