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TI-2021-13228 Aliases CVE-2021-33929GHSA-28q6-prfq-9g82

Buffer overflow vulnerability in function pool_disabled_solvable in src/repo.h in libsolv…

Priority LOW 36CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 4 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

Buffer overflow vulnerability in function pool_disabled_solvable in src/repo.h in libsolv before 0.7.17 allows attackers to cause a Denial of Service.

Why it matters now

EPSS 0.01441 73rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 2 advisoriesRed Hat: 4 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:opensuse:libsolv:*:*:*:*:*:*:*:*up to 0.7.17VulnerableopenSUSE
  • cpe:2.3:a:opensuse:libsolv:*:*:*:*:*:*:*:* Versions up to 0.7.17 Vulnerable ·openSUSE

Remediation

Red Hat 2 advisories

  • RHSA-2022:5498 Released 2022-07-05 · Red Hat rating Moderate
    Satellite 6.11 Release
    • Red Hat Satellite 6.11 for RHEL 7 candlepin-4.1.13-1.el7sat, foreman-3.1.1.21-2.el7sat, libsolv-0.7.22-1.el7pc +4
    • Red Hat Satellite 6.11 for RHEL 8 candlepin-4.1.13-1.el8sat, foreman-3.1.1.21-2.el8sat, libsolv-0.7.22-1.el8pc +8
  • RHSA-2021:4060 Released 2021-11-02 · Red Hat rating Moderate
    libsolv security update
    • Red Hat CodeReady Linux Builder (v. 8) libsolv-devel-0.7.16-3.el8_4, libsolv-tools-0.7.16-3.el8_4
    • Red Hat Enterprise Linux BaseOS (v. 8) libsolv-0.7.16-3.el8_4, python3-solv-0.7.16-3.el8_4

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Update Infrastructure 3 for Cloud ProvidersAffectedNo fix planned: Will not fix
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2021:4060
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2021:4060
Red Hat Satellite 6.11 for RHEL 7Fixed RHSA-2022:5498
Red Hat Satellite 6.11 for RHEL 8Fixed RHSA-2022:5498
Not affected: 4 products
  • Red Hat Ansible Automation Platform 1.2
  • Red Hat Enterprise Linux 9
  • Red Hat Satellite 6.11 for RHEL 7
  • Red Hat Satellite 6.11 for RHEL 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-33929
  2. 2026-10-03 Alias added: GHSA-28q6-prfq-9g82

References

Exploit 1

  • TI-2026-08044 Libsolv: heap buffer overflow in libsolv repo_add_solv via negative maxsize from crafted .solv file CVSS 3.1MEDIUM 6.5
  • TI-2019-14621 repodata_schema2id in repodata.c in libsolv before 0.7.6 has a heap-based buffer… CVSS 3.1HIGH 7.5
  • TI-2021-13230 Buffer overflow vulnerability in function prune_to_recommended in src/policy.c in libsolv… CVSS 3.1HIGH 7.5
  • TI-2021-13229 Buffer overflow vulnerability in function pool_installable_whatprovides in src/repo.h in… CVSS 3.1HIGH 7.5
  • TI-2021-13227 Buffer overflow vulnerability in function pool_installable in src/repo.h in libsolv… CVSS 3.1HIGH 7.5
  • TI-2026-36128 Libsolv: heap buffer overflow in libsolv repopagestore via unchecked decompression of malicious .solv page data CVSS 3.1HIGH 7.8
See all 12 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences