{"id":"CVE-2026-48863","summary":"Libsolv: stack-based buffer overflow in libsolv eddsa pgp signature verification allows denial of service","details":"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.","modified":"2026-07-19T03:30:55.492938351Z","published":"2026-07-16T00:46:12.846Z","related":["SUSE-SU-2026:21988-1","SUSE-SU-2026:21992-1","SUSE-SU-2026:22172-1","SUSE-SU-2026:22221-1","SUSE-SU-2026:2531-1","SUSE-SU-2026:2575-1","SUSE-SU-2026:2590-1","SUSE-SU-2026:2674-1","openSUSE-SU-2026:10895-1","openSUSE-SU-2026:21096-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48863.json","cna_assigner":"redhat","cwe_ids":["CWE-121"]},"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48863.json"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-48863"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48863.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48863"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2460975"},{"type":"FIX","url":"https://github.com/openSUSE/libsolv/commit/44f8c085045b1f771641091bbb2b810d12cff9e8#diff-309f245ec9b669ec78b8159c39e6f50130b4d4a0448f742685f7833d04bc4caaR592"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/opensuse/libsolv","events":[{"introduced":"1be9896f3702c4996e1a43e1c9b5c18366ff42b9"},{"fixed":"44f8c085045b1f771641091bbb2b810d12cff9e8"}],"database_specific":{"extracted_events":[{"introduced":"0.6.4"},{"fixed":"0.7.38"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["0.7.37","0.7.36","0.7.35","0.7.34","0.7.33","0.7.32","0.7.31","0.7.30","0.7.29","0.7.28","0.7.27","0.7.26","0.7.25","0.7.24","0.7.23","0.7.22","0.7.21","0.7.20","0.7.19","0.7.18","0.7.17","0.7.16","0.7.15","0.7.14","0.7.13","0.7.12","0.7.11","0.7.10","0.7.9","0.7.8","0.7.7","0.7.6","0.7.5","0.7.4","0.7.3","0.7.2","0.7.1","0.7.0","0.6.35","0.6.34","0.6.33","0.6.32","0.6.31","0.6.30","0.6.29","0.6.28","0.6.27","0.6.26","0.6.25","0.6.24","0.6.23","0.6.22","0.6.21","0.6.20","0.6.19","0.6.18","0.6.17","0.6.16","0.6.15","0.6.14","0.6.13","0.6.12","0.6.11","0.6.10","0.6.9","0.6.8","0.6.7","0.6.6","0.6.5","0.6.4"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48863.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}