DEBIAN-CVE-2026-39956
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-39956
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-39956.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-39956
- Upstream
- Published
- 2026-04-13T23:16:27Z
- Modified
- 2026-09-14T17:03:32Z
- Severity
-
- 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
jq is a command-line JSON processor. Prior to version 1.8.2, the _strindices builtin in jq's src/builtin.c passes its arguments directly to jv_string_indexes() without verifying they are strings, and jv_string_indexes() in src/jv.c relies solely on assert() checks that are stripped in release builds compiled with -DNDEBUG. This allows an attacker to crash jq trivially with input like _strindices(0), and by crafting a numeric value whose IEEE-754 bit pattern maps to a chosen pointer, achieve a controlled pointer dereference and limited memory read/probe primitive. Any deployment that evaluates untrusted jq filters against a release build is vulnerable. This issue has been patched in commit fdf8ef0f0810e3d365cdd5160de43db46f57ed03, which is part of version 1.8.2.
- References
Affected packages
Debian:12 / jq
Package
- Name
- jq
- Purl
- pkg:deb/debian/jq?arch=source&distro=bookworm
Debian:13 / jq
Package
- Name
- jq
- Purl
- pkg:deb/debian/jq?arch=source&distro=trixie
Debian:14 / jq
Package
- Name
- jq
- Purl
- pkg:deb/debian/jq?arch=source&distro=forky