CVEvulnerability

CVE-2026-39979

6.9 MEDIUM Published 2026-04-13 Modified 2026-10-26 Official page ↗
Status
Analyzed
Published
2026-04-13
Last modified
2026-10-26
Assigner
[email protected]
CVSS 4.0 ([email protected])
6.9 MEDIUM — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
8.2 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Weaknesses
CWE-125

Description

jq is a command-line JSON processor. In commits before 2f09060afab23fe9390cce7cb860b10416e1bf5f, the jv_parse_sized() API in libjq accepts a counted buffer with an explicit length parameter, but its error-handling path formats the input buffer using %s in jv_string_fmt(), which reads until a NUL terminator is found rather than respecting the caller-supplied length. This means that when malformed JSON is passed in a non-NUL-terminated buffer, the error construction logic performs an out-of-bounds read past the end of the buffer. The vulnerability is reachable by any libjq consumer calling jv_parse_sized() with untrusted input, and depending on memory layout, can result in memory disclosure or process termination. The issue has been patched in commit 2f09060afab23fe9390cce7cb860b10416e1bf5f.

Affected configurations

• jqlang jq (< 1.8.2) • redhat ai inference server (>= 3.2.0 < 3.2.2) • redhat ai inference server (>= 3.3.0 < 3.3.5) • redhat ansible automation platform 2.0 • redhat ceph storage 4.0 • redhat codeready linux builder 8.0 • redhat codeready linux builder 9.0 • redhat codeready linux builder 10.0 • redhat codeready linux builder eus 9.4 • redhat codeready linux builder eus 9.6 • redhat codeready linux builder eus 10.0 • redhat hardened images • redhat openshift ai (>= 3.4 < 3.4.3) • redhat openshift container platform (>= 4.12 < 4.12.92) • redhat openshift container platform (>= 4.13 < 4.13.68) • redhat openshift container platform (>= 4.14 < 4.14.68) • redhat openshift container platform (>= 4.15 < 4.15.65) • redhat openshift container platform (>= 4.16 < 4.16.64) • redhat openshift container platform (>= 4.17 < 4.17.55) • redhat openshift container platform (>= 4.18 < 4.18.44) • redhat openshift container platform (>= 4.19 < 4.19.33) • redhat enterprise linux 8.0 • redhat enterprise linux 9.0 • redhat enterprise linux 10.0 • redhat enterprise linux aus 8.4 • redhat enterprise linux aus 8.6 • redhat enterprise linux eus 8.4 • redhat enterprise linux eus 9.4 • redhat enterprise linux eus 9.6 • redhat enterprise linux eus 10.0 • redhat enterprise linux tus 8.6 • redhat enterprise linux tus 8.8 • redhat enterprise linux update services for sap solutions 8.6 • redhat enterprise linux update services for sap solutions 8.8 • redhat enterprise linux update services for sap solutions 9.0 • redhat enterprise linux update services for sap solutions 9.2

Related

Weakness · CWE (1)

  • CWE-125 Out-of-bounds Read weakness

References