High
libsolv — security advisory
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.
- Products
- libsolv
- Affected versions
- 0.6.11-1, 0.6.11-1.1, 0.6.11-1.1ubuntu0.1~esm1, 0.6.11-1build1, 0.6.28-2build1, 0.6.30-1build1, 0.6.30-1ubuntu0.1~esm1, 0.6.35-2ubuntu1, 0.6.35-2ubuntu2, 0.6.36-1, 0.6.36-2, 0.7.17-2, 0.7.20-1, 0.7.20-1build2, 0.7.20-1ubuntu0.22.04.1, 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, 0.7.31-1build1, 0.7.32-1, 0.7.35-1, 0.7.35-1build1, 0.7.38-1, 0.7.39-1, 0.7.39-1build1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-48863
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:07 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-48863
libsolv
Fixed versions: Not specified
libsolv
Fixed versions: Not specified
libsolv
Fixed versions: Not specified
libsolv
Fixed versions: Not specified
libsolv
Fixed versions: Not specified
libsolv
Fixed versions: Not specified
libsolv
Fixed versions: Not specified
libsolv
Fixed versions: Not specified
Complete source record
{
"id": "76a8d9fc0d1f10dc78c444a1a2b011c69b7b129b5afbdba6c9101e8d909247b3",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-48863",
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"modified": "2026-10-17T13:00:23.689549516Z",
"provider": "osv",
"upstream": [
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],
"references": [
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"https://www.cve.org/CVERecord?id=CVE-2026-48863",
"https://bugzilla.redhat.com/show_bug.cgi?id=2460975"
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},
"source_id": "core-osv",
"document_id": 360481,
"published_at": "2026-07-16T01:16:00+00:00"
}