Incorrect validation of field size in Ubuntu Linux AppArmor notification responses

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Summary

CVECVE-2026-47329
StatePUBLISHED
Assignercanonical
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-28 19:16:41 UTC
Updated2026-05-29 02:45:36 UTC
DescriptionUbuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches which fail to validate invalid sizes of the name field in AppAmor notification responses. The bug can be triggered by an unprivileged local user and could result in handling of crafted responses.

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:L/A:N

Problem Types: CWE-1284 | CWE-1284 CWE-1284 Improper validation of specified quantity in input

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

CVSS v3.1 Breakdown

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

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

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)

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