CVE-2026-9149

MEDIUM

Libsolv: heap buffer overflow in libsolv repo_add_solv via negative maxsize from crafted .solv file

Title source: cna

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).

References (3)

Core 3

Core References

Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat

https://access.redhat.com/security/cve/CVE-2026-9149

https://github.com/openSUSE/libsolv/pull/617

Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat

RHBZ#2460380

https://bugzilla.redhat.com/show_bug.cgi?id=2460380

Scores

CVSS v3 6.5

EPSS 0.0003

EPSS Percentile 9.6%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-122

Status published

Products (8)

Red Hat/Red Hat Enterprise Linux 10

Red Hat/Red Hat Enterprise Linux 7

Red Hat/Red Hat Enterprise Linux 8

Red Hat/Red Hat Enterprise Linux 9

Red Hat/Red Hat Hardened Images

Red Hat/Red Hat OpenShift Container Platform 4

Red Hat/Red Hat Satellite 6

Red Hat/Red Hat Update Infrastructure 4 for Cloud Providers

Published May 21, 2026

Tracked Since May 21, 2026