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DEBIAN-CVE-2026-49839

Type: advisorySource: OSV1 source record

jq is a command-line JSON processor. Prior to 1.8.2,` jq --rawfile` can turn a handled oversized-string error into invalid-state reuse and a real heap out-of-bounds write in assertion-disabled builds. When jv_load_file(raw=1) reads an attacker-controlled file, it repeatedly appends file chunks to the same jv string accumulator. Once jv_string_append_buf() returns jv_invalid_with_msg("String too long"), the raw-file loop does not stop. If the file contains at least one more byte, the next loop iteration appends a new chunk to an object that is already invalid. With assertions enabled this aborts in jvp_string_ptr(). With assertions disabled, the invalid object is interpreted as a string object and ASan reports heap-buffer-overflow. This vulnerability is fixed in 1.8.2.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-49839

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-2026-49839

jq

Source reference: /affected/0/package/name

Affected versions
1.6-2.1

Source reference: /affected/0/versions

1.6-2.1+deb12u1

Source reference: /affected/0/versions

Fixed versions
1.6-2.1+deb12u2

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

jq

Source reference: /affected/1/package/name

Affected versions
1.7.1-6+deb13u1

Source reference: /affected/1/versions

1.7.1-6+deb13u2

Source reference: /affected/1/versions

Fixed versions
1.7.1-6+deb13u3

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

jq

Source reference: /affected/2/package/name

Affected versions
1.8.0-1

Source reference: /affected/2/versions

1.8.1-1

Source reference: /affected/2/versions

1.8.1-2

Source reference: /affected/2/versions

1.8.1-3

Source reference: /affected/2/versions

1.8.1-4

Source reference: /affected/2/versions

1.8.1-5

Source reference: /affected/2/versions

1.8.1-6

Source reference: /affected/2/versions

1.8.1-7

Source reference: /affected/2/versions

Fixed versions
1.8.1-8

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": "1.6-2.1+deb12u2"
          }
        ]
      }
    ],
    "package": {
      "name": "jq",
      "purl": "pkg:deb/debian/jq?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1.6-2.1",
      "1.6-2.1+deb12u1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49839.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1.7.1-6+deb13u3"
          }
        ]
      }
    ],
    "package": {
      "name": "jq",
      "purl": "pkg:deb/debian/jq?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1.7.1-6+deb13u1",
      "1.7.1-6+deb13u2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49839.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1.8.1-8"
          }
        ]
      }
    ],
    "package": {
      "name": "jq",
      "purl": "pkg:deb/debian/jq?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1.8.0-1",
      "1.8.1-1",
      "1.8.1-2",
      "1.8.1-3",
      "1.8.1-4",
      "1.8.1-5",
      "1.8.1-6",
      "1.8.1-7"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49839.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57209 · Revision 1
Added to Heist Feed
Publisher date
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