{"id":"UBUNTU-CVE-2026-48863","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":"2026-07-22T11:44:11.998580344Z","published":"2026-07-16T01:16:00Z","upstream":["CVE-2026-48863"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-48863"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-48863"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2460975"}],"affected":[{"package":{"name":"libsolv","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libsolv?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.11-1","0.6.11-1build1","0.6.11-1.1","0.6.11-1.1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libsolv-perl","binary_version":"0.6.11-1.1ubuntu0.1~esm1"},{"binary_version":"0.6.11-1.1ubuntu0.1~esm1","binary_name":"libsolv-tools"},{"binary_version":"0.6.11-1.1ubuntu0.1~esm1","binary_name":"libsolv0"},{"binary_name":"libsolvext0","binary_version":"0.6.11-1.1ubuntu0.1~esm1"},{"binary_version":"0.6.11-1.1ubuntu0.1~esm1","binary_name":"python-solv"},{"binary_name":"python3-solv","binary_version":"0.6.11-1.1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48863.json"}},{"package":{"name":"libsolv","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libsolv?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.28-2build1","0.6.30-1build1","0.6.30-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.6.30-1ubuntu0.1~esm1","binary_name":"libsolv-perl"},{"binary_name":"libsolv-tools","binary_version":"0.6.30-1ubuntu0.1~esm1"},{"binary_name":"libsolv0","binary_version":"0.6.30-1ubuntu0.1~esm1"},{"binary_name":"libsolvext0","binary_version":"0.6.30-1ubuntu0.1~esm1"},{"binary_name":"python-solv","binary_version":"0.6.30-1ubuntu0.1~esm1"},{"binary_version":"0.6.30-1ubuntu0.1~esm1","binary_name":"python3-solv"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48863.json"}},{"package":{"name":"libsolv","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libsolv?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.35-2ubuntu1","0.6.35-2ubuntu2","0.6.36-1","0.6.36-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libsolv-perl","binary_version":"0.6.36-2"},{"binary_name":"libsolv-tools","binary_version":"0.6.36-2"},{"binary_name":"libsolv0","binary_version":"0.6.36-2"},{"binary_name":"libsolvext0","binary_version":"0.6.36-2"},{"binary_name":"python3-solv","binary_version":"0.6.36-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48863.json"}},{"package":{"name":"libsolv","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libsolv?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.7.17-2","0.7.20-1","0.7.20-1build2","0.7.20-1ubuntu0.22.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libsolv-perl","binary_version":"0.7.20-1ubuntu0.22.04.1"},{"binary_name":"libsolv-tools","binary_version":"0.7.20-1ubuntu0.22.04.1"},{"binary_version":"0.7.20-1ubuntu0.22.04.1","binary_name":"libsolv1"},{"binary_name":"libsolvext1","binary_version":"0.7.20-1ubuntu0.22.04.1"},{"binary_version":"0.7.20-1ubuntu0.22.04.1","binary_name":"python3-solv"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48863.json"}},{"package":{"name":"libsolv","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libsolv?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.7.24-1","0.7.25-1","0.7.26-1","0.7.26-2","0.7.27-1","0.7.27-2","0.7.27-2build1","0.7.28-1","0.7.28-1build1","0.7.28-1build2"],"ecosystem_specific":{"binaries":[{"binary_version":"0.7.28-1build2","binary_name":"libsolv-perl"},{"binary_name":"libsolv-tools","binary_version":"0.7.28-1build2"},{"binary_name":"libsolv1","binary_version":"0.7.28-1build2"},{"binary_name":"libsolvext1","binary_version":"0.7.28-1build2"},{"binary_name":"python3-solv","binary_version":"0.7.28-1build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48863.json"}},{"package":{"name":"libsolv","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/libsolv?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.7.31-1build1","0.7.32-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libsolv-perl","binary_version":"0.7.32-1"},{"binary_version":"0.7.32-1","binary_name":"libsolv-tools"},{"binary_name":"libsolv1","binary_version":"0.7.32-1"},{"binary_name":"libsolvext1","binary_version":"0.7.32-1"},{"binary_name":"python3-solv","binary_version":"0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