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Vulnerability record · CVE-2026-9149 · published 21 May 2026

CVE-2026-9149: Opensuse libsolv heap-based buffer overflow vulnerability

Opensuse · Libsolv

A flaw was found in libsolv. This heap buffer overflow vulnerability occurs when a victim processes a specially crafted `.solv` file containing negative size values in the `repo_add_solv` function. This leads to an undersized memory allocation and a subsequent out-of-bounds write. An attacker could exploit this to cause a denial of service (DoS).

6.5 CVSS 3.1 Medium EPSS 0.57% · top 55.1% CWE-122 · Heap-based buffer overflow
6.5CVSS 3.1 base score
0.57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
7References
1 Sep 2026Last modified by NVD

Description

A flaw was found in libsolv. This heap buffer overflow vulnerability occurs when a victim processes a specially crafted `.solv` file containing negative size values in the `repo_add_solv` function. This leads to an undersized memory allocation and a subsequent out-of-bounds write. An attacker could exploit this to cause a denial of service (DoS).

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

Affected products

6 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2026:21333
https://access.redhat.com/errata/RHSA-2026:28236
https://access.redhat.com/errata/RHSA-2026:48818
https://access.redhat.com/security/cve/CVE-2026-9149 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2460380 Issue TrackingThird Party Advisory
https://github.com/openSUSE/libsolv/pull/617 Issue TrackingPatch
https://github.com/openSUSE/libsolv/pull/617 Issue TrackingPatch

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Source: NIST National Vulnerability Database (record CVE-2026-9149), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.