CVE-2026-48863
A flaw was found in libsolv. A stack-based buffer overflow vulnerability exists in the PGP verification component due to incorrect length handling when copying EdDSA 's' MPI into a stack buffer. A remote attacker could craft a malicious Ed25519 PGP signature with mismatched MPI lengths. Processing this crafted signature could lead to a denial of service in automated package or repository processing workflows.
- Score
- CVSS 3.1 7.5 High
- Status
- Awaiting Analysis - secalert@redhat.com
- Published
- 2026-07-16
- Last modified
- 2026-09-01
- Weaknesses
- CWE-121
Affected products
- Libsolv (Opensuse)
- Enterprise Linux (Redhat)
- Hummingbird (Redhat)
- Openshift (Redhat)
- Rhui (Redhat)
- Satellite (Redhat)
References
- https://access.redhat.com/security/cve/CVE-2026-48863
- https://bugzilla.redhat.com/show_bug.cgi?id=2460975
- https://github.com/openSUSE/libsolv/commit/44f8c085045b1f771641091bbb2b810d12cff9e8#diff-309f245ec9b669ec78b8159c39e6f5…
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48863.json
