CVE-2026-9149
Libsolv: heap buffer overflow in libsolv repo_add_solv via negative maxsize from crafted .solv file
- State
- Published
- Severity
- 6.5 Medium
- Published
- May 20, 2026
- Updated
- Sep 1, 2026
- Reserved
- May 20, 2026
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).
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | redhat |
Weaknesses
- CWE-122 Heap-based Buffer Overflow
Affected Products
| Product | Versions |
|---|---|
Red Hat Enterprise Linux 10Red Hat |
|
Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat |
|
Red Hat Hardened ImagesRed Hat |
|
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat Satellite 6Red Hat | |
Red Hat Update Infrastructure 4 for Cloud ProvidersRed Hat |
References
- RHSA-2026:21333vendor-advisory
- RHSA-2026:28236vendor-advisory
- RHSA-2026:48818vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-9149vdb-entry
- RHBZ#2460380issue-tracking
- https://github.com/openSUSE/libsolv/pull/617
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