DEBIAN-CVE-2026-49839

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Source
https://security-tracker.debian.org/tracker/CVE-2026-49839
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49839.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-49839
Upstream
Published
2026-06-25T18:16:38Z
Modified
2026-09-14T17:03:16Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Debian:12 / jq

Package

Name
jq
Purl
pkg:deb/debian/jq?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.6-2.1+deb12u2

Affected versions

1.*
1.6-2.1
1.6-2.1+deb12u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49839.json"

Debian:13 / jq

Package

Name
jq
Purl
pkg:deb/debian/jq?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.7.1-6+deb13u3

Affected versions

1.*
1.7.1-6+deb13u1
1.7.1-6+deb13u2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49839.json"

Debian:14 / jq

Package

Name
jq
Purl
pkg:deb/debian/jq?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.8.1-8

Affected versions

1.*
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

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49839.json"