UnratedFix available

DEBIAN-CVE-2026-48977

Type: advisorySource: OSV1 source record

OpenSlide is a C library for reading whole slide image files. From 3.4.1 until 4.0.1, OpenSlide's parse_level0_xml() processing in src/openslide-vendor-ventana.c accepts nonpositive row or column tile counts from a crafted Ventana BIF file. The invalid counts produce attacker-controlled relative memory offsets and allow arbitrary values to be written at those offsets, affecting all supported platforms and configurations and resulting in a crash or potential arbitrary code execution. This issue is fixed in version 4.0.1.

Announced 17 Sept 2026Group revision 1

Original source ↗

DEBIAN-CVE-2026-48977

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-2026-48977

openslide

Source reference: /affected/0/package/name

Affected versions: 3.4.1+dfsg-6
Source reference: /affected/0/versions
Fixed versions: 3.4.1+dfsg-6+deb12u1
Source reference: /affected/0/ranges
Prerequisites: Not stated in this record

openslide

Source reference: /affected/1/package/name

Affected versions: 3.4.1+dfsg-7
Source reference: /affected/1/versions
Fixed versions: 3.4.1+dfsg-7+deb13u1
Source reference: /affected/1/ranges
Prerequisites: Not stated in this record

openslide

Source reference: /affected/2/package/name

Affected versions: 3.4.1+dfsg-7
Source reference: /affected/2/versions
3.4.1+dfsg-8
Source reference: /affected/2/versions
Fixed versions: 3.4.1+dfsg-9
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"
          },
          {
            "fixed": "3.4.1+dfsg-6+deb12u1"
          }
        ]
      }
    ],
    "package": {
      "name": "openslide",
      "purl": "pkg:deb/debian/openslide?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "3.4.1+dfsg-6"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48977.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.4.1+dfsg-7+deb13u1"
          }
        ]
      }
    ],
    "package": {
      "name": "openslide",
      "purl": "pkg:deb/debian/openslide?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "3.4.1+dfsg-7"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48977.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.4.1+dfsg-9"
          }
        ]
      }
    ],
    "package": {
      "name": "openslide",
      "purl": "pkg:deb/debian/openslide?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "3.4.1+dfsg-7",
      "3.4.1+dfsg-8"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48977.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #6109 · Revision 1
Added to Heist Feed: Sat, 24 Oct 2026 22:22:01 GMT
Publisher date: Thu, 17 Sep 2026 21:17:13 GMT

Read the original announcement

Revision history

24 Oct 2026DEBIAN-CVE-2026-48977 · Revision 1Source updated