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CVE-2026-9149— Libsolv: heap buffer overflow in libsolv repo_add_solv via negative maxsize from crafted .solv file

CVSS 6.5 · Medium EPSS 0.03% · P10

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-9149

Vulnerability Information
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Vulnerability Title
Libsolv: heap buffer overflow in libsolv repo_add_solv via negative maxsize from crafted .solv file
Source: NVD (National Vulnerability Database)
Vulnerability 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).
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
堆缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
libsolv 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libsolv是openSUSE开源的一个用于检查软件包依赖的库。 libsolv存在安全漏洞，该漏洞源于repo_add_solv函数处理特制.solv文件时存在堆缓冲区溢出，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat Enterprise Linux 10-cpe:/o:redhat:enterprise_linux:10
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 8-cpe:/o:redhat:enterprise_linux:8
Red HatRed Hat Enterprise Linux 9-cpe:/o:redhat:enterprise_linux:9
Red HatRed Hat Hardened Images-cpe:/a:redhat:hummingbird:1
Red HatRed Hat OpenShift Container Platform 4-cpe:/a:redhat:openshift:4
Red HatRed Hat Satellite 6-cpe:/a:redhat:satellite:6
Red HatRed Hat Update Infrastructure 4 for Cloud Providers-cpe:/a:redhat:rhui:4::el8

II. Public POCs for CVE-2026-9149

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III. Intelligence Information for CVE-2026-9149

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Patches & Fixes for CVE-2026-9149 (1)

Vendor Advisories for CVE-2026-9149 (2)

Same Patch Batch · Red Hat · 2026-05-20 · 4 CVEs total

CVE-2026-90647.5 HIGH389-ds-base: 389-ds-base: unbounded ldap controls count in get_ldapmessage_controls_ext()
CVE-2026-91506.5 MEDIUMLibsolv: stack-based buffer overflow in libsolv's debian metadata parser when handling sha
CVE-2026-90876.4 MEDIUMKeycloak: cross-session email verification proof not bound to upstream identity in first-b

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-122

V. Comments for CVE-2026-9149

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