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DEBIAN-CVE-2026-49337

Type: advisorySource: OSV1 source record

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted sequence of H.265 NAL units causes `decoder_context::read_slice_NAL()` (`libde265/decctx.cc:481`) to attach slice headers to a finished picture object that has no active image unit, resulting in attacker-controlled unbounded heap growth. The retained headers are never freed until the picture is released, which may not happen during continuous streaming. Version 1.0.20 patches the issue.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-49337

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-2026-49337

libde265

Source reference: /affected/0/package/name

Affected versions
1.0.11-1

Source reference: /affected/0/versions

1.0.11-1+deb12u1

Source reference: /affected/0/versions

1.0.11-1+deb12u2

Source reference: /affected/0/versions

Fixed versions
1.0.11-1+deb12u3

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

libde265

Source reference: /affected/1/package/name

Affected versions
1.0.15-1

Source reference: /affected/1/versions

Fixed versions
1.0.15-1+deb13u1

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

libde265

Source reference: /affected/2/package/name

Affected versions
1.0.15-1

Source reference: /affected/2/versions

1.0.16-1

Source reference: /affected/2/versions

1.0.18-1

Source reference: /affected/2/versions

Fixed versions
1.1.1-1

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"
          },
          {
            "fixed": "1.0.11-1+deb12u3"
          }
        ]
      }
    ],
    "package": {
      "name": "libde265",
      "purl": "pkg:deb/debian/libde265?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1.0.11-1",
      "1.0.11-1+deb12u1",
      "1.0.11-1+deb12u2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49337.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1.0.15-1+deb13u1"
          }
        ]
      }
    ],
    "package": {
      "name": "libde265",
      "purl": "pkg:deb/debian/libde265?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1.0.15-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49337.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1.1.1-1"
          }
        ]
      }
    ],
    "package": {
      "name": "libde265",
      "purl": "pkg:deb/debian/libde265?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1.0.15-1",
      "1.0.16-1",
      "1.0.18-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49337.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57194 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-49337 · Revision 1Source updated