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
The jq utility in Red Hat Enterprise Linux 8.6 is affected by two vulnerabilities: an out-of-bounds read (CWE-125) in the jv_parse_sized() function triggered by error formatting of non-NUL-terminated buffers, and a denial of service (CWE-341) caused by crafted JSON objects that induce hash collisions. These vulnerabilities could lead to potential memory safety issues and service disruption. Red Hat has released updated packages (jq-1.6-3.el8_6.2) to remediate these issues as detailed in advisory RHSA-2026:18047.
Potential Impact
The out-of-bounds read vulnerability may cause jq to read memory beyond allocated buffers, potentially leading to crashes or information disclosure. The denial of service vulnerability allows an attacker to craft JSON input that causes hash collisions, resulting in jq consuming excessive resources and becoming unresponsive. Both vulnerabilities impact jq processing of JSON data on affected Red Hat Enterprise Linux 8.6 systems.
Mitigation Recommendations
Red Hat has released updated jq packages (version 1.6-3.el8_6.2) for Red Hat Enterprise Linux 8.6 variants that address these vulnerabilities. Users should apply these official updates promptly following Red Hat's guidance at https://access.redhat.com/articles/11258. No additional mitigations are indicated by the vendor 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
The jq utility in Red Hat Enterprise Linux 8.6 is affected by two vulnerabilities: an out-of-bounds read (CWE-125) in the jv_parse_sized() function triggered by error formatting of non-NUL-terminated buffers, and a denial of service (CWE-341) caused by crafted JSON objects that induce hash collisions. These vulnerabilities could lead to potential memory safety issues and service disruption. Red Hat has released updated packages (jq-1.6-3.el8_6.2) to remediate these issues as detailed in advisory RHSA-2026:18047.
Potential Impact
The out-of-bounds read vulnerability may cause jq to read memory beyond allocated buffers, potentially leading to crashes or information disclosure. The denial of service vulnerability allows an attacker to craft JSON input that causes hash collisions, resulting in jq consuming excessive resources and becoming unresponsive. Both vulnerabilities impact jq processing of JSON data on affected Red Hat Enterprise Linux 8.6 systems.
Mitigation Recommendations
Red Hat has released updated jq packages (version 1.6-3.el8_6.2) for Red Hat Enterprise Linux 8.6 variants that address these vulnerabilities. Users should apply these official updates promptly following Red Hat's guidance at https://access.redhat.com/articles/11258. No additional mitigations are indicated by the vendor 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-2026:18047
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-40164"]
- Cvss Version
- null
Threat ID: 6a1f4e85e29bf47b5007dc7c
Added to database: 06/02/2026, 21:43:33 UTC
Last enriched: 07/10/2026, 12:59:03 UTC
Last updated: 07/31/2026, 19:24:46 UTC
Views: 59
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