CVE-2026-9149
MEDIUMLibsolv: heap buffer overflow in libsolv repo_add_solv via negative maxsize from crafted .solv file
Title source: cnaDescription
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 (5)
Core 5
Core References
Vendor Advisory vendor-advisory
x_refsource_redhat
RHSA-2026:28236
https://access.redhat.com/errata/RHSA-2026:28236
Vendor Advisory vendor-advisory
x_refsource_redhat
RHSA-2026:21333
https://access.redhat.com/errata/RHSA-2026:21333
Vdb Entry, X_Refsource_Redhat vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-9149
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
0.0029
EPSS Percentile
20.9%
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 (19)
opensuse/libsolv
< 0.7.36
Red Hat/Red Hat Enterprise Linux 10
Red Hat/Red Hat Enterprise Linux 10
0:0.7.33-5.el10_2
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 Hardened Images
0.7.38-2.hum1
Red Hat/Red Hat OpenShift Container Platform 4
Red Hat/Red Hat Satellite 6
... and 9 more
Published
May 21, 2026
Tracked Since
May 21, 2026