Libarchive: heap overflow oob read while parsing a tar archive contains a pax extended header

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Summary

CVECVE-2026-15028
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-10 10:16:23 UTC
Updated2026-07-11 05:16:32 UTC
DescriptionA flaw was found in libarchive. This vulnerability allows a remote attacker to trigger a heap overflow by providing a specially crafted tar archive. The issue occurs during the parsing of a PAX extended header containing a malformed SUN.holesdata sparse-file attribute. Successful exploitation could lead to a denial of service, making the system unavailable, or potentially allow for arbitrary code execution, giving the attacker control over the affected system.

Risk And Classification

Primary CVSS: v3.1 3.9 LOW from [email protected]

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

EPSS: 0.002860000 probability, percentile 0.204180000 (date 2026-07-10)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3.9LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
3.1CNACVSS3.9LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Enterprise Linux 10 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 6 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 8 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 9 Not specified Not specified
CNA Red Hat Red Hat Hardened Images Not specified Not specified
CNA Red Hat Red Hat OpenShift Container Platform 4 Not specified Not specified

References

ReferenceSourceLinkTags
github.com/libarchive/libarchive/pull/3253 [email protected] github.com
access.redhat.com/security/cve/CVE-2026-15028 [email protected] access.redhat.com
bugzilla.redhat.com/show_bug.cgi [email protected] bugzilla.redhat.com
github.com/libarchive/libarchive/issues/3251 [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2026-07-08T00:00:00.000ZReported to Red Hat.
CNA2026-07-08T10:10:00.000ZMade public.
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