Claircore: claircore: denial of service via out-of-bounds slice in claircore's apk installed-database parser

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-16254
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-20 12:17:56 UTC
Updated2026-07-21 18:31:51 UTC
DescriptionA flaw was found in claircore's apk package scanner. Malformed package-database data in a container layer can cause an out-of-bounds access that panics the scanner. If that panic is not recovered, the Clair indexer process can crash, leading to a denial of service.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

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

EPSS: 0.002720000 probability, percentile 0.192000000 (date 2026-07-21)

Problem Types: CWE-125 | CWE-125 Out-of-bounds Read

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
3.1CNACVSS4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Advanced Cluster Security 4 Not specified Not specified
CNA Red Hat Red Hat Advanced Cluster Security 4 Not specified Not specified
CNA Red Hat Red Hat Advanced Cluster Security 4 Not specified Not specified
CNA Red Hat Red Hat Advanced Cluster Security 4 Not specified Not specified
CNA Red Hat Red Hat Advanced Cluster Security 4 Not specified Not specified
CNA Red Hat Red Hat Advanced Cluster Security 4 Not specified Not specified
CNA Red Hat Red Hat Advanced Cluster Security 4 Not specified Not specified
CNA Red Hat Red Hat Advanced Cluster Security 4 Not specified Not specified
CNA Red Hat Red Hat Advanced Cluster Security 4 Not specified Not specified
CNA Red Hat Red Hat Quay 3 Not specified Not specified
CNA Red Hat Red Hat Quay 3 Not specified Not specified

References

ReferenceSourceLinkTags
bugzilla.redhat.com/show_bug.cgi [email protected] bugzilla.redhat.com
access.redhat.com/security/cve/CVE-2026-16254 [email protected] access.redhat.com
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: Red Hat would like to thank Arpit Jain for reporting this issue. (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-07-20T07:23:30.820ZReported to Red Hat.
CNA2026-07-20T07:58:00.000ZMade public.

Workarounds

CNA: Limit image push/indexing to trusted sources until a fix is available. Where possible, run indexing so a single scanner failure cannot disrupt shared indexing capacity.

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