CVE-2026-80707High· 7.5▾ Twilight

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…

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score41/ 100 · Moderate

impact 41.3 · likelihood 0.1 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Aug 28, 2026

Updated

Oct 16, 2026

CVSS

7.5

Vendor

Red Hat

Product

Red Hat Enterprise Linux 9

CWE

CWE-824

Depth score

41 · Moderate

EPSS

0.33% · p26

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Scores by source

NVD 7.5 · CNA 7.5 · Vendor 5.5⚖ 2.0-point dispute

CISA SSVC

decided 2026-10-16

Exploitation: none
Automatable: yes
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 16.

0.3% → 0.3%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

7 events · 61 days

Aug 28, 2026Published
Disclosed via NVD
Oct 16, 2026Record revised
Last analysed / modified upstream
Oct 16, 2026EPSS first tracked
0.3%
Oct 18, 2026CVSS changed
7.5 → 5.5
Oct 18, 2026Severity changed
high → medium
Oct 27, 2026CVSS changed
5.5 → 7.5
Oct 27, 2026Severity changed
medium → high

Red Hat CWE-824 #nvd #csaf #vex #red-hat #cve.org #score-dispute

Affected

enterprise_linux 10
enterprise_linux 9

Full technical detail▾

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

References

Change history

Field changes observed since this record was first indexed.

Oct 27, 2026CVSS 5.5 → 7.5
Oct 27, 2026Severity medium → high
Oct 18, 2026CVSS 7.5 → 5.5
Oct 18, 2026Severity high → medium

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#csaf#vex#red-hat#cve.org#score-dispute

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CVE-2026-80707High· 7.5▾ Twilight

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…

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score41/ 100 · Moderate

impact 41.3 · likelihood 0.1 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Aug 28, 2026

Updated

Oct 16, 2026

CVSS

7.5

Vendor

Red Hat

Product

Red Hat Enterprise Linux 9

CWE

CWE-824

Depth score

41 · Moderate

EPSS

0.33% · p26

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Scores by source

NVD 7.5 · CNA 7.5 · Vendor 5.5⚖ 2.0-point dispute

CISA SSVC

decided 2026-10-16

Exploitation: none
Automatable: yes
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 16.

0.3% → 0.3%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

7 events · 61 days

Aug 28, 2026Published
Disclosed via NVD
Oct 16, 2026Record revised
Last analysed / modified upstream
Oct 16, 2026EPSS first tracked
0.3%
Oct 18, 2026CVSS changed
7.5 → 5.5
Oct 18, 2026Severity changed
high → medium
Oct 27, 2026CVSS changed
5.5 → 7.5
Oct 27, 2026Severity changed
medium → high

Red Hat CWE-824 #nvd #csaf #vex #red-hat #cve.org #score-dispute

Affected

enterprise_linux 10
enterprise_linux 9

Full technical detail▾

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.

[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

References

Change history

Field changes observed since this record was first indexed.

Oct 27, 2026CVSS 5.5 → 7.5
Oct 27, 2026Severity medium → high
Oct 18, 2026CVSS 7.5 → 5.5
Oct 18, 2026Severity high → medium

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#csaf#vex#red-hat#cve.org#score-dispute