CVE-2026-31532: can: raw: fix ro->uniq use-after-free in raw_rcv()

Published Apr 23, 2026
·
Updated

can: raw: fix ro->uniq use-after-free in rawrcv()

Affected Software

9 affected componentsFixes available
Linux Linux kernel
Microsoft azl3 kernel 6.6.134.1-2
Microsoft azl3 kernel 6.6.134.1-2<6.6.137.1-1
6.6.137.1-1
Linux Linux kernel>=4.1<=6.6.136
Linux Linux kernel>=6.7<6.12.83
Linux Linux kernel>=6.18<6.18.24
Linux Linux kernel>=6.19<6.19.14
Linux Linux kernel>=7.0<7.0.1
debian/linux
6.1.176-16.1.190-16.12.107-16.12.115-27.2.12-17.2.15-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.6.137.1-1
  2. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.12-1Fixed in 7.2.15-1

Event History

Apr 23, 2026
CVE Published
via MITRE·11:12 AM
Data Sourced
via MITRE·11:12 AM
DescriptionSeverity
Data Sourced
via Red Hat·12:01 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·12:17 PM
RemedyDescriptionSeverityWeaknessAffected Software
Apr 24, 2026
Data Sourced
via Microsoft·08:04 AM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2026-31532?

CVE-2026-31532 has a high severity rating due to the potential for use-after-free conditions in the Linux kernel.

2

How do I fix CVE-2026-31532?

To fix CVE-2026-31532, update your Linux kernel to the latest stable version that includes the patch for this vulnerability.

3

What impact does CVE-2026-31532 have on system security?

CVE-2026-31532 can lead to memory corruption and may allow malicious entities to cause a denial of service or potentially execute arbitrary code.

4

Which versions of the Linux kernel are affected by CVE-2026-31532?

CVE-2026-31532 affects multiple versions of the Linux kernel prior to the patch release that addresses this vulnerability.

5

What components are involved in CVE-2026-31532?

CVE-2026-31532 primarily involves the CAN (Controller Area Network) subsystem within the Linux kernel.

Contact

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