---
id: CVE-2026-9149
title: A flaw was found in libsolv
summary: >-
  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 allo…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cwe:
  - CWE-122
vendor: opensuse
product: libsolv
affected:
  - libsolv <= 0.7.36
  - hardened_images
  - openshift_container_platform = 4.0
  - satellite = 6.0
  - update_infrastructure = 4
  - enterprise_linux = 7.0
  - enterprise_linux = 8.0
  - enterprise_linux = 9.0
  - enterprise_linux = 10.0
published: '2026-05-21'
updated: '2026-07-23'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-9149'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:21333'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:28236'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-9149'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2460380'
    label: secalert@redhat.com
  - url: 'https://github.com/openSUSE/libsolv/pull/617'
    label: secalert@redhat.com
  - url: 'https://github.com/openSUSE/libsolv/pull/617'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00312
epssPercentile: 0.24263
ingestedAt: '2026-07-23T11:17:33.780Z'
---

## Overview

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).

## Affected

- `libsolv <= 0.7.36`
- `hardened_images`
- `openshift_container_platform = 4.0`
- `satellite = 6.0`
- `update_infrastructure = 4`
- `enterprise_linux = 7.0`
- `enterprise_linux = 8.0`
- `enterprise_linux = 9.0`
- `enterprise_linux = 10.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.