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 has published an advisory (RHSA-2026:18045) addressing two vulnerabilities in jq, a lightweight JSON processor included in Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. CVE-2026-39979 is an out-of-bounds read vulnerability in the jv_parse_sized() function triggered by error formatting of non-NUL-terminated buffers. CVE-2026-40164 is a denial of service vulnerability caused by crafted JSON objects that induce hash collisions. The advisory provides updated jq packages (version 1.6-12.el9_0.3) for multiple architectures including x86_64, ppc64le, aarch64, and s390x. The update mitigates these vulnerabilities by correcting the parsing and hash collision handling mechanisms. No CVSS scores are provided in the advisory. The vulnerabilities are rated with an important security impact by Red Hat.
Potential Impact
The out-of-bounds read vulnerability (CVE-2026-39979) could lead to potential memory corruption or crashes when jq processes malformed JSON buffers that are not properly NUL-terminated. The denial of service vulnerability (CVE-2026-40164) allows 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, leading to service interruptions or instability.
Mitigation Recommendations
Red Hat has released updated jq packages (version 1.6-12.el9_0.3) for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions across multiple architectures. Users should apply these official updates as detailed in Red Hat advisory RHSA-2026:18045 and the referenced article https://access.redhat.com/articles/11258 to remediate the vulnerabilities. No additional mitigations are specified or required beyond applying the vendor-provided patches.
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 has published an advisory (RHSA-2026:18045) addressing two vulnerabilities in jq, a lightweight JSON processor included in Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. CVE-2026-39979 is an out-of-bounds read vulnerability in the jv_parse_sized() function triggered by error formatting of non-NUL-terminated buffers. CVE-2026-40164 is a denial of service vulnerability caused by crafted JSON objects that induce hash collisions. The advisory provides updated jq packages (version 1.6-12.el9_0.3) for multiple architectures including x86_64, ppc64le, aarch64, and s390x. The update mitigates these vulnerabilities by correcting the parsing and hash collision handling mechanisms. No CVSS scores are provided in the advisory. The vulnerabilities are rated with an important security impact by Red Hat.
Potential Impact
The out-of-bounds read vulnerability (CVE-2026-39979) could lead to potential memory corruption or crashes when jq processes malformed JSON buffers that are not properly NUL-terminated. The denial of service vulnerability (CVE-2026-40164) allows 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, leading to service interruptions or instability.
Mitigation Recommendations
Red Hat has released updated jq packages (version 1.6-12.el9_0.3) for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions across multiple architectures. Users should apply these official updates as detailed in Red Hat advisory RHSA-2026:18045 and the referenced article https://access.redhat.com/articles/11258 to remediate the vulnerabilities. No additional mitigations are specified or required beyond applying the vendor-provided patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:18045
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-40164"]
- Cvss Version
- null
Threat ID: 6a1f4e85e29bf47b5007dc67
Added to database: 06/02/2026, 21:43:33 UTC
Last enriched: 07/10/2026, 12:57:26 UTC
Last updated: 07/31/2026, 19:24:46 UTC
Views: 48
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