NULL pointer dereference in Ubuntu Linux AppArmor IPv4/IPv6 socket mediation

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Summary

CVECVE-2026-47337
StatePUBLISHED
Assignercanonical
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-28 19:16:42 UTC
Updated2026-05-29 02:45:36 UTC
DescriptionUbuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling of AF_INET/AF_INET6 socket mediation. The bug can be triggered by an unprivileged local user. This can lead to a kernel oops.

Risk And Classification

Primary CVSS: v3.1 3.3 LOW from [email protected]

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

Problem Types: CWE-476 | CWE-476 CWE-476 NULL pointer dereference

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3.3LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
3.1CNACVSS3.3LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Canonical Ubuntu Linux affected 6.8.0 6.8.0-124.124 dpkg Not specified
CNA Canonical Ubuntu Linux affected 6.17.0 6.17.0-35.35 dpkg Not specified
CNA Canonical Ubuntu Linux affected 7.0.0 7.0.0-22.22 dpkg Not specified

References

ReferenceSourceLinkTags
git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit [email protected] git.launchpad.net
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Tristan Madani (@TristanInSec), Talence Security (en)

CNA: Trevor Lawrence, _SiCk, afflicted.sh (en)

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