Red Hat Security Advisory: jq security update
jq is a lightweight and flexible command-line JSON processor. jq is like sed for JSON data. You can use it to slice, filter, map, or transform structured data with the same ease that sed, awk, grep, or similar applications allow you to manipulate text. Security Fix(es): * jq: out-of-bounds read in jv_parse_sized() on error formatting for non-NUL-terminated buffers (CVE-2026-39979) * jq: jq: Denial of Service via crafted JSON object causing hash collisions (CVE-2026-40164) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
Red Hat Product Security released an advisory (RHSA-2026:18040) for jq, addressing two vulnerabilities: CVE-2026-39979, an out-of-bounds read in jv_parse_sized() triggered by error formatting of non-NUL-terminated buffers, and CVE-2026-40164, a denial of service vulnerability caused by crafted JSON objects that induce hash collisions. These vulnerabilities affect jq packages included in Red Hat Enterprise Linux 10.0 Extended Update Support and associated CodeReady Linux Builder variants across multiple architectures (x86_64, s390x, ppc64le, aarch64). The advisory provides updated jq packages (version 1.7.1-8.el10_0.3) to remediate these issues.
Potential Impact
The out-of-bounds read vulnerability (CVE-2026-39979) could lead to memory safety issues when jq processes malformed JSON buffers. The denial of service vulnerability (CVE-2026-40164) could allow an attacker to cause jq to consume excessive resources or crash by submitting specially crafted JSON objects that cause hash collisions. These issues could disrupt applications or systems relying on jq for JSON processing.
Mitigation Recommendations
Red Hat has released updated jq packages (version 1.7.1-8.el10_0.3) for Red Hat Enterprise Linux 10.0 Extended Update Support and related CodeReady Linux Builder products to address these vulnerabilities. Users should apply these official updates as described in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate the issues. No alternative mitigations or workarounds are indicated in the advisory.
Red Hat Security Advisory: jq security update
Description
jq is a lightweight and flexible command-line JSON processor. jq is like sed for JSON data. You can use it to slice, filter, map, or transform structured data with the same ease that sed, awk, grep, or similar applications allow you to manipulate text. Security Fix(es): * jq: out-of-bounds read in jv_parse_sized() on error formatting for non-NUL-terminated buffers (CVE-2026-39979) * jq: jq: Denial of Service via crafted JSON object causing hash collisions (CVE-2026-40164) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Red Hat Product Security released an advisory (RHSA-2026:18040) for jq, addressing two vulnerabilities: CVE-2026-39979, an out-of-bounds read in jv_parse_sized() triggered by error formatting of non-NUL-terminated buffers, and CVE-2026-40164, a denial of service vulnerability caused by crafted JSON objects that induce hash collisions. These vulnerabilities affect jq packages included in Red Hat Enterprise Linux 10.0 Extended Update Support and associated CodeReady Linux Builder variants across multiple architectures (x86_64, s390x, ppc64le, aarch64). The advisory provides updated jq packages (version 1.7.1-8.el10_0.3) to remediate these issues.
Potential Impact
The out-of-bounds read vulnerability (CVE-2026-39979) could lead to memory safety issues when jq processes malformed JSON buffers. The denial of service vulnerability (CVE-2026-40164) could allow an attacker to cause jq to consume excessive resources or crash by submitting specially crafted JSON objects that cause hash collisions. These issues could disrupt applications or systems relying on jq for JSON processing.
Mitigation Recommendations
Red Hat has released updated jq packages (version 1.7.1-8.el10_0.3) for Red Hat Enterprise Linux 10.0 Extended Update Support and related CodeReady Linux Builder products to address these vulnerabilities. Users should apply these official updates as described in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate the issues. No alternative mitigations or workarounds are indicated in the advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:18040
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-40164"]
- Cvss Version
- null
Threat ID: 6a1f4e85e29bf47b5007dc59
Added to database: 06/02/2026, 21:43:33 UTC
Last enriched: 07/10/2026, 12:42:29 UTC
Last updated: 07/31/2026, 19:24:46 UTC
Views: 95
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