# CVE-2026-9150: openSUSE libsolv stack overflow in Debian metadata parser

Source: https://junglewise.ai/threats/cve-2026-9150-opensuse-libsolv-stack-overflow-in-debian-metadata-parser  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-20. Updated: 2026-05-20  
License: CC BY 4.0 with a link back

CVE-2026-9150 · Severity: medium · CVSS 6.5 · Published 2026-05-20

A security vulnerability exists in libsolv, a library used by package managers to solve software dependencies. The flaw occurs when the library processes specially crafted Debian repository metadata containing long security checksums. If an attacker convinces a user or system to process a malicious metadata file, it can cause the application to crash, leading to a denial of service.

Technologies: [Opensuse Libsolv](https://junglewise.ai/threats/technologies/libsolv). Vendors: [Opensuse](https://junglewise.ai/threats/vendors/opensuse).

## Quick answers

**Is CVE-2026-9150 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-9150 being exploited in the wild.

**How severe is CVE-2026-9150?** Medium severity, with a CVSS score of 6.5, published 20 May 2026.

**Which products and versions are affected?** Opensuse Libsolv <= 0.7.36.

**Is there a fix for CVE-2026-9150?** A patch was published on 2026-04-22: Fix merged into libsolv master branch Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-9150 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-9150?** Check whether you run Opensuse Libsolv at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A stack-based buffer overflow exists in libsolv's 'control2solvable()' function within 'ext/repo_deb.c'. The vulnerability is caused by using a fixed-size stack buffer (65 bytes) intended for 32-byte digests, while the parser accepts and validates longer SHA384 and SHA512 tags. When a 128-character SHA512 checksum is encountered, a 'strcpy' operation overflows the buffer by 64 bytes. An attacker can exploit this by providing a crafted Debian 'Packages' file. While primarily resulting in a denial of service (DoS) via memory corruption, stack corruption is present. The issue was addressed in the openSUSE/libsolv GitHub repository by enlarging the buffer and using safer memory copy operations.

## Affected products

- openSUSE libsolv <= 0.7.36

## Timeline

- 2026-04-21: other: Vulnerability reported to Red Hat Bugzilla
- 2026-04-22: patched: Fix merged into libsolv master branch
- 2026-05-20: disclosed: CVE published and NVD record created

## References

- [https://access.redhat.com/security/cve/CVE-2026-9150](https://access.redhat.com/security/cve/CVE-2026-9150)
- [https://bugzilla.redhat.com/show_bug.cgi?id=2460379](https://bugzilla.redhat.com/show_bug.cgi?id=2460379)
- [https://github.com/openSUSE/libsolv/pull/616](https://github.com/openSUSE/libsolv/pull/616)

## Related threats

- [OpenSUSE libsolv stack overflow in PGP EdDSA verification](https://junglewise.ai/threats/cve-2026-48863-opensuse-libsolv-stack-overflow-in-pgp-eddsa-verification)
- [openSUSE libsolv heap buffer overflow in repo_add_solv](https://junglewise.ai/threats/cve-2026-9149-opensuse-libsolv-heap-buffer-overflow-in-repo-add-solv)