net: hsr: fix potential OOB access in supervision frame handling
Summary
| CVE | CVE-2026-64000 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-19 16:17:39 UTC |
| Updated | 2026-07-20 15:17:01 UTC |
| 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. |
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: 0.001720000 probability, percentile 0.069030000 (date 2026-07-20)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected eafaa88b3eb7f28aecb222281655473431d3ef2e 09a37dca090c55ffb1a33f52d8667f1c2367ef48 git | Not specified |
| CNA | Linux | Linux | affected eafaa88b3eb7f28aecb222281655473431d3ef2e a4b64f3e9c7b8259f7dd251a0313420ba7c01852 git | Not specified |
| CNA | Linux | Linux | affected eafaa88b3eb7f28aecb222281655473431d3ef2e 71c986c0ba45b7dc574fae27c83e7b6671556f37 git | Not specified |
| CNA | Linux | Linux | affected eafaa88b3eb7f28aecb222281655473431d3ef2e fbd0662f9c9a66e8cc3df3099cca8ed6d3837cc7 git | Not specified |
| CNA | Linux | Linux | affected eafaa88b3eb7f28aecb222281655473431d3ef2e 78607a6854a22a2502f68092202e75a39af4865d git | Not specified |
| CNA | Linux | Linux | affected eafaa88b3eb7f28aecb222281655473431d3ef2e f229426072fc865654a60978bb7fda790a051ff3 git | Not specified |
| CNA | Linux | Linux | affected 5.16 | Not specified |
| CNA | Linux | Linux | unaffected 5.16 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.176 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.143 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.93 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.35 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.12 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/a4b64f3e9c7b8259f7dd251a0313420ba7c01852 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f229426072fc865654a60978bb7fda790a051ff3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/fbd0662f9c9a66e8cc3df3099cca8ed6d3837cc7 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/09a37dca090c55ffb1a33f52d8667f1c2367ef48 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/71c986c0ba45b7dc574fae27c83e7b6671556f37 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/78607a6854a22a2502f68092202e75a39af4865d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.