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DEBIAN-CVE-2026-48863

Type: advisorySource: OSV1 source record

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.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-48863

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-48863

libsolv

Source reference: /affected/0/package/name

Affected versions
0.7.23-1

Source reference: /affected/0/versions

0.7.23-1+deb12u1

Source reference: /affected/0/versions

0.7.24-1

Source reference: /affected/0/versions

0.7.25-1

Source reference: /affected/0/versions

0.7.26-1

Source reference: /affected/0/versions

0.7.26-2

Source reference: /affected/0/versions

0.7.27-1

Source reference: /affected/0/versions

0.7.27-2

Source reference: /affected/0/versions

0.7.28-1

Source reference: /affected/0/versions

0.7.28-1.1~exp1

Source reference: /affected/0/versions

0.7.29-1

Source reference: /affected/0/versions

0.7.30-1

Source reference: /affected/0/versions

0.7.30-2

Source reference: /affected/0/versions

0.7.31-1

Source reference: /affected/0/versions

0.7.32-1

Source reference: /affected/0/versions

0.7.35-1

Source reference: /affected/0/versions

0.7.36-1

Source reference: /affected/0/versions

0.7.37-1

Source reference: /affected/0/versions

0.7.38-1

Source reference: /affected/0/versions

0.7.39-1

Source reference: /affected/0/versions

0.7.39-2

Source reference: /affected/0/versions

0.7.40-1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

libsolv

Source reference: /affected/1/package/name

Affected versions
0.7.32-1

Source reference: /affected/1/versions

0.7.35-1

Source reference: /affected/1/versions

0.7.36-1

Source reference: /affected/1/versions

0.7.37-1

Source reference: /affected/1/versions

0.7.38-1

Source reference: /affected/1/versions

0.7.39-1

Source reference: /affected/1/versions

0.7.39-2

Source reference: /affected/1/versions

0.7.40-1

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

libsolv

Source reference: /affected/2/package/name

Affected versions
0.7.32-1

Source reference: /affected/2/versions

0.7.35-1

Source reference: /affected/2/versions

0.7.36-1

Source reference: /affected/2/versions

0.7.37-1

Source reference: /affected/2/versions

Fixed versions
0.7.38-1

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "libsolv",
      "purl": "pkg:deb/debian/libsolv?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "0.7.23-1",
      "0.7.23-1+deb12u1",
      "0.7.24-1",
      "0.7.25-1",
      "0.7.26-1",
      "0.7.26-2",
      "0.7.27-1",
      "0.7.27-2",
      "0.7.28-1",
      "0.7.28-1.1~exp1",
      "0.7.29-1",
      "0.7.30-1",
      "0.7.30-2",
      "0.7.31-1",
      "0.7.32-1",
      "0.7.35-1",
      "0.7.36-1",
      "0.7.37-1",
      "0.7.38-1",
      "0.7.39-1",
      "0.7.39-2",
      "0.7.40-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48863.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "libsolv",
      "purl": "pkg:deb/debian/libsolv?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "0.7.32-1",
      "0.7.35-1",
      "0.7.36-1",
      "0.7.37-1",
      "0.7.38-1",
      "0.7.39-1",
      "0.7.39-2",
      "0.7.40-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48863.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.7.38-1"
          }
        ]
      }
    ],
    "package": {
      "name": "libsolv",
      "purl": "pkg:deb/debian/libsolv?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "0.7.32-1",
      "0.7.35-1",
      "0.7.36-1",
      "0.7.37-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48863.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#56584 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-48863 · Revision 1Source updated