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libsolv — security advisory

Type: advisorySources: OSVAdvisory ID: UBUNTU-CVE-2026-48864

A flaw was found in libsolv. This heap buffer overflow occurs during the decompression of attacker-controlled compressed data within `.solv` files due to insufficient input validation. An attacker can provide a specially crafted `.solv` file, which, when processed by a vulnerable application, can lead to out-of-bounds memory access. This could result in information disclosure, alteration of program execution, or a denial of service.

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-2026-48864
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 03:07 UTC · Revision 1

Source evidence

UBUNTU-CVE-2026-48864

core-osv · Original source

Published 26 May 2026, 17:16 UTC

A flaw was found in libsolv. This heap buffer overflow occurs during the decompression of attacker-controlled compressed data within `.solv` files due to insufficient input validation. An attacker can provide a specially crafted `.solv` file, which, when processed by a vulnerable application, can lead to out-of-bounds memory access. This could result in information disclosure, alteration of program execution, or a denial of service.

osv:UBUNTU-CVE-2026-48864

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": "44b3f68b5cb8706f9c4a1a53abc071e77e31143a0b6e63193abdae7b4e7297a4",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-48864",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-48864",
    "summary": "A flaw was found in libsolv. This heap buffer overflow occurs during the decompression of attacker-controlled compressed data within `.solv` files due to insufficient input validation. An attacker can provide a specially crafted `.solv` file, which, when processed by a vulnerable application, can lead to out-of-bounds memory access. This could result in information disclosure, alteration of program execution, or a denial of service.",
    "evidence": "osv:UBUNTU-CVE-2026-48864",
    "products": [
      {
        "name": {
          "value": "libsolv",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.6.11-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.6.11-1build1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.6.11-1.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.6.11-1.1ubuntu0.1~esm1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libsolv",
          "evidence": "/affected/1/package/name"
        },
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        "affected_versions": [
          {
            "value": "0.6.28-2build1",
            "evidence": "/affected/1/versions"
          },
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            "value": "0.6.30-1build1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "0.6.30-1ubuntu0.1~esm1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libsolv",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.6.35-2ubuntu1",
            "evidence": "/affected/2/versions"
          },
          {
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          {
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        },
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            "evidence": "/affected/3/versions"
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            "evidence": "/affected/3/versions"
          },
          {
            "value": "0.7.20-1build2",
            "evidence": "/affected/3/versions"
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          {
            "value": "0.7.20-1ubuntu0.22.04.1",
            "evidence": "/affected/3/versions"
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        "name": {
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          "evidence": "/affected/4/package/name"
        },
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        "affected_versions": [
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            "evidence": "/affected/4/versions"
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          {
            "value": "0.7.26-1",
            "evidence": "/affected/4/versions"
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          {
            "value": "0.7.26-2",
            "evidence": "/affected/4/versions"
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            "value": "0.7.27-1",
            "evidence": "/affected/4/versions"
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          {
            "value": "0.7.27-2",
            "evidence": "/affected/4/versions"
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            "value": "0.7.27-2build1",
            "evidence": "/affected/4/versions"
          },
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            "value": "0.7.28-1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "0.7.28-1build1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "0.7.28-1build2",
            "evidence": "/affected/4/versions"
          }
        ]
      },
      {
        "name": {
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          "evidence": "/affected/5/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
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            "evidence": "/affected/5/versions"
          },
          {
            "value": "0.7.32-1",
            "evidence": "/affected/5/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libsolv",
          "evidence": "/affected/6/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.7.35-1build1",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "0.7.38-1",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "0.7.39-1",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "0.7.39-1build1",
            "evidence": "/affected/6/versions"
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      {
        "name": {
          "value": "libsolv",
          "evidence": "/affected/7/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.7.32-1",
            "evidence": "/affected/7/versions"
          },
          {
            "value": "0.7.35-1",
            "evidence": "/affected/7/versions"
          },
          {
            "value": "0.7.35-1build1",
            "evidence": "/affected/7/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "UBUNTU-CVE-2026-48864",
      "aliases": [
        "UBUNTU-CVE-2026-48864"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "libsolv",
            "purl": "pkg:deb/ubuntu/libsolv?arch=source&distro=esm-apps%2Fxenial",
            "ecosystem": "Ubuntu:Pro:16.04:LTS"
          },
          "versions": [
            "0.6.11-1",
            "0.6.11-1build1",
            "0.6.11-1.1",
            "0.6.11-1.1ubuntu0.1~esm1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48864.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libsolv-perl",
                "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_version": "0.6.11-1.1ubuntu0.1~esm1"
              },
              {
                "binary_name": "libsolvext0",
                "binary_version": "0.6.11-1.1ubuntu0.1~esm1"
              },
              {
                "binary_name": "python-solv",
                "binary_version": "0.6.11-1.1ubuntu0.1~esm1"
              },
              {
                "binary_name": "python3-solv",
                "binary_version": "0.6.11-1.1ubuntu0.1~esm1"
              }
            ]
          }
        },
        {
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                }
              ]
            }
          ],
          "package": {
            "name": "libsolv",
            "purl": "pkg:deb/ubuntu/libsolv?arch=source&distro=esm-apps%2Fbionic",
            "ecosystem": "Ubuntu:Pro:18.04:LTS"
          },
          "versions": [
            "0.6.28-2build1",
            "0.6.30-1build1",
            "0.6.30-1ubuntu0.1~esm1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48864.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libsolv-perl",
                "binary_version": "0.6.30-1ubuntu0.1~esm1"
              },
              {
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              },
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                "binary_name": "libsolv0",
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              },
              {
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                "binary_version": "0.6.30-1ubuntu0.1~esm1"
              },
              {
                "binary_name": "python-solv",
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            "ecosystem": "Ubuntu:20.04:LTS"
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          "versions": [
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          },
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          },
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          },
          "ecosystem_specific": {
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              {
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              {
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              },
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          ],
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            "ecosystem": "Ubuntu:26.10"
          },
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          ],
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          ],
          "package": {
            "name": "libsolv",
            "purl": "pkg:deb/ubuntu/libsolv?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "0.7.32-1",
            "0.7.35-1",
            "0.7.35-1build1"
          ],
          "database_specific": {
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          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libsolv-perl",
                "binary_version": "0.7.35-1build1"
              },
              {
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              },
              {
                "binary_name": "libsolv1",
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              },
              {
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              },
              {
                "binary_name": "python3-solv",
                "binary_version": "0.7.35-1build1"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T13:00:23.655956724Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-48864"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-48864",
        "https://www.cve.org/CVERecord?id=CVE-2026-48864",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2460425",
        "https://access.redhat.com/security/cve/CVE-2026-48864"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-48864",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 360480,
  "published_at": "2026-05-26T17:16:00+00:00"
}