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CVE Record

CVE-2026-9150: Libsolv: stack-based buffer overflow in libsolv's debian metadata parser when handling sha384/sha512 checksums

A 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.

MediumCVSS 6.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Libsolv can crash when it processes deliberately malformed Debian repository metadata containing SHA384 or SHA512 checksum tags. Successful abuse could disrupt package-management or repository-related services, but the supplied evidence does not indicate data theft, data modification, or active exploitation.

Executive priority

Treat this as a prompt availability-focused remediation, especially for package infrastructure and systems using untrusted repositories. It is not supported as an emergency data-breach issue by the supplied evidence. Apply applicable vendor updates during the next accelerated maintenance window and investigate any unexplained package-manager crashes.

Technical view

CVE-2026-9150 is a CWE-121 stack-based buffer overflow in libsolv's Debian metadata parser. Network-delivered, crafted repository metadata can cause memory corruption after user interaction. CVSS 3.1 is 6.5, with availability impact rated high and confidentiality and integrity impacts rated none.

Likely exposure

Exposure is most likely where affected Red Hat systems process Debian repository metadata from untrusted or compromised sources. The bundle marks RHEL 7, 9, specified RHEL 10 releases, OpenShift 4, Satellite 6, RHUI 4, and listed Hardened Images affected. RHEL 8 is marked unaffected.

Exploitation context

The attack requires specially crafted repository metadata and user interaction, such as initiating metadata processing. No privileges are required and attack complexity is low. The bundle says KEV is false and provides no evidence of exploitation in the wild. Demonstrated impact is memory corruption and denial of service, not code execution.

Researcher notes

The documented primitive is a stack overflow involving SHA384 or SHA512 checksum tags. The CVSS vector requires user interaction and assigns no confidentiality or integrity impact. The sources supplied do not establish reliable code execution, public weaponization, affected upstream version ranges, or complete fixed-version details; consult the linked vendor errata and upstream change.

Mitigation direction

  • Review the applicable Red Hat errata and install vendor-provided corrected packages or images.
  • Prioritize systems that consume Debian metadata from external, third-party, or otherwise untrusted repositories.
  • Restrict repository configuration and metadata sources to trusted, authenticated infrastructure where operationally feasible.
  • If updates cannot be applied, consult Red Hat guidance for supported temporary mitigations.

Validation and detection

  • Inventory libsolv and libsolv-main package versions across the listed Red Hat products.
  • Compare installed packages and images with the applicable Red Hat errata.
  • Confirm RHEL 8 assets are correctly identified before treating them as unaffected.
  • Audit configured repositories and identify systems processing externally controlled Debian metadata.
  • After remediation, verify updated package deployment and normal package-management operation.
Prepared
Confidence
high
Sources
8

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-121: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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description · low confidence lookup

Container behavior lookup

The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2026-9150 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.5 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
5Timeline events
1ADP providers
8Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
6.5CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H2.83.6redhat

Vulnerability scoring details

Base CVSS 3.1 score

6.5Medium
CVSS 3.1 vector shape for CVE-2026-9150Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. Source timelineredhat

    Reported to Red Hat.

  2. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  3. Source timelineredhat

    Made public.

  4. CVE publishedCVE Program

    The CVE record was published.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Red HatRed Hat Enterprise Linux 10libsolv, 0:0.7.33-5.el10_2affected
Red HatRed Hat Enterprise Linux 10.0 Extended Update Supportlibsolv, 0:0.7.29-8.el10_0.1affected
Red HatRed Hat Hardened Imageslibsolv-main, 0.7.38-2.hum1affected
Red HatRed Hat Hardened Imageslibsolv-main, 0.7.39-3.hum1affected
Red HatRed Hat Enterprise Linux 7libsolvaffected
Red HatRed Hat Enterprise Linux 8libsolvunaffected
Red HatRed Hat Enterprise Linux 9libsolvaffected
Red HatRed Hat OpenShift Container Platform 4rhcosaffected
Red HatRed Hat Satellite 6satellite-capsule:el8/libsolvaffected
Red HatRed Hat Update Infrastructure 4 for Cloud Providerslibsolvaffected
Weakness

CWE details

CWE-121

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.