DEBIAN-CVE-2026-49839
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.
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/versions1.6-2.1+deb12u1Source 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/versions1.7.1-6+deb13u2Source 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/versions1.8.1-1Source reference:
/affected/2/versions1.8.1-2Source reference:
/affected/2/versions1.8.1-3Source reference:
/affected/2/versions1.8.1-4Source reference:
/affected/2/versions1.8.1-5Source reference:
/affected/2/versions1.8.1-6Source reference:
/affected/2/versions1.8.1-7Source 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