CVE-2026-48863

Impact

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.

Affected packages

This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.

Weakness classification

References

• NVD record
• CVE.org record
• 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-309f245ec9b669ec78b8159c39e6f50130b4d4a0448f742685f7833d04bc4caaR592
• https://access.redhat.com/security/cve/CVE-2026-48863
• https://bugzilla.redhat.com/show_bug.cgi?id=2460975
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48863.json