CVE-2026-80707

HIGHPre-NVD 7.57.5
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-28. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In the Linux kernel, the following vulnerability has been resolved:

can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer

Zero the allocated buffer in j1939_session_fresh_new() to ensure it contains no residual data.

While there is a potential performance impact if users allocate maximum sized ETP buffers, most real-world use cases are not noticeably affected since the maximum known buffer size is typically around 65K.

[mkl: add Message-ID]

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

August 28, 2026

Last Modified

August 29, 2026

Advisory Details (8)

Auto-updated Aug 29, 2026
No patch confirmed yet.
generic

can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/eb96c58907922546e415e545fe9a14ea63b02719
generic

can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d5b3613c7d69d8dcb4dd6704f1f463198ce9f6cf
generic

can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8604a3b81b9d0ceaf04fee5f52e701f623a179f9
generic

can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/038bad8e16c2e28acf31f0b527a816fb23a57269
generic

can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/194d67e92197eb820f4c2c6605d9721333b3eba0
generic

can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bbfa49d1e287de44994955b44d19281be3195b44
generic

can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f3e120a34b336079479fa10f706f0636eaa6e751
generic

can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/348818277a3646d5b9fa60c9d20c00dc4bc86832

Vendor Advisories for CVE-2026-80707(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 12× in last 7d / 12× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 19:36 UTCEG score recompute
  3. 2026-08-29 19:36 UTCGHSA enrichment
  4. 2026-08-29 07:25 UTCEG score recompute
  5. 2026-08-29 07:25 UTCGHSA enrichment
  6. 2026-08-29 06:35 UTCEG score recompute 7.50
  7. 2026-08-29 06:35 UTCGHSA enrichment
  8. 2026-08-29 06:33 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  9. 2026-08-28 21:42 UTCEPSS rescore
  10. 2026-08-28 08:20 UTCNVD update
  11. 2026-08-28 07:33 UTCEG score recompute
  12. 2026-08-28 07:32 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-80707?
CVE-2026-80707 is a high vulnerability published on August 28, 2026. In the Linux kernel, the following vulnerability has been resolved: can: j1939: transport: j1939sessionfresh_new(): initialize receive buffer Zero the allocated buffer in j1939sessionfresh_new() to ensure it contains no residual data. While there is a potential performance impact if users allocate…
When was CVE-2026-80707 disclosed?
CVE-2026-80707 was first published in the National Vulnerability Database on August 28, 2026, with the most recent update on August 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-80707 actively exploited?
CVE-2026-80707 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 74.7% of all scored CVEs.
What is the CVSS score of CVE-2026-80707?
CVE-2026-80707 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-80707?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-80707, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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