Libsolv: stack-based buffer overflow in libsolv's debian metadata parser when handling sha384/sha512 checksums

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Summary

CVECVE-2026-9150
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-20 23:16:36 UTC
Updated2026-05-21 15:26:35 UTC
DescriptionA flaw was found in libsolv. This stack-based buffer overflow vulnerability occurs in libsolv's Debian metadata parser when processing specially crafted Debian repository metadata. An attacker could exploit this by providing malicious SHA384 or SHA512 checksum tags, leading to memory corruption and a denial of service (DoS) in the affected system.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

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

EPSS: 0.000150000 probability, percentile 0.032690000 (date 2026-05-27)

Problem Types: CWE-121 | CWE-121 Stack-based Buffer Overflow

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
3.1CNACVSS6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Enterprise Linux 10 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
CNA Red Hat Red Hat Satellite 6 Not specified Not specified
CNA Red Hat Red Hat Update Infrastructure 4 For Cloud Providers Not specified Not specified

References

ReferenceSourceLinkTags
bugzilla.redhat.com/show_bug.cgi [email protected] bugzilla.redhat.com
github.com/openSUSE/libsolv/pull/616 [email protected] github.com
access.redhat.com/security/cve/CVE-2026-9150 [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: This issue was discovered by Found by AISLE in partnership with Red Hat. (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-04-21T21:15:41.000ZReported to Red Hat.
CNA2026-05-20T22:59:46.186ZMade public.

Workarounds

CNA: To mitigate this issue, ensure that libsolv only processes trusted and cryptographically signed Debian repository metadata. Avoid ingesting or processing `Packages` files from untrusted or unverified sources.

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