---
id: CVE-2026-80707
title: |-
  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 da…
summary: |-
  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 da…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-824
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 9
published: '2026-08-28'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T20:18:07.550'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80707'
references:
  - url: 'https://git.kernel.org/stable/c/038bad8e16c2e28acf31f0b527a816fb23a57269'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/194d67e92197eb820f4c2c6605d9721333b3eba0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/348818277a3646d5b9fa60c9d20c00dc4bc86832'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8604a3b81b9d0ceaf04fee5f52e701f623a179f9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bbfa49d1e287de44994955b44d19281be3195b44'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d5b3613c7d69d8dcb4dd6704f1f463198ce9f6cf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/eb96c58907922546e415e545fe9a14ea63b02719'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f3e120a34b336079479fa10f706f0636eaa6e751'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80707.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80707'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2525399'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80707'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80707'
  - url: >-
      https://lore.kernel.org/linux-cve-announce/2026082807-CVE-2026-80707-cf56@gregkh/T
tags:
  - nvd
  - csaf
  - vex
  - red-hat
  - cve.org
  - score-dispute
epss: 0.00329
epssPercentile: 0.25896
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-16T19:20:28.838708Z'
scores:
  nvd: 7.5
  vendor: 5.5
  cna: 7.5
ingestedAt: '2026-10-16T19:46:24.305Z'
---

## Overview

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]

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80707.json)