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
jq versions included in Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Telecommunications Update Service are affected by two vulnerabilities: an out-of-bounds read in jv_parse_sized() on error formatting for non-NUL-terminated buffers (CVE-2026-39979) and a denial of service vulnerability caused by crafted JSON objects triggering hash collisions (CVE-2026-40164). These issues could lead to potential crashes or denial of service conditions when processing maliciously crafted JSON input. Red Hat has released updated jq packages (version 1.6-6.el8_8.4) to remediate these vulnerabilities.
Potential Impact
The out-of-bounds read vulnerability may cause jq to read memory beyond allocated buffers, potentially leading to crashes or undefined behavior. The denial of service vulnerability allows an attacker to craft JSON objects that cause hash collisions, resulting in resource exhaustion and service disruption. Both vulnerabilities impact jq's ability to safely process JSON data, potentially affecting systems relying on jq for JSON manipulation.
Mitigation Recommendations
Red Hat has released updated jq packages (version 1.6-6.el8_8.4) for Red Hat Enterprise Linux 8.8 variants that address these vulnerabilities. Users should apply these official updates promptly to remediate the issues. For detailed update instructions, refer to the Red Hat advisory at https://access.redhat.com/articles/11258. No additional mitigation steps 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.
CVSS v4.0
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
jq versions included in Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Telecommunications Update Service are affected by two vulnerabilities: an out-of-bounds read in jv_parse_sized() on error formatting for non-NUL-terminated buffers (CVE-2026-39979) and a denial of service vulnerability caused by crafted JSON objects triggering hash collisions (CVE-2026-40164). These issues could lead to potential crashes or denial of service conditions when processing maliciously crafted JSON input. Red Hat has released updated jq packages (version 1.6-6.el8_8.4) to remediate these vulnerabilities.
Potential Impact
The out-of-bounds read vulnerability may cause jq to read memory beyond allocated buffers, potentially leading to crashes or undefined behavior. The denial of service vulnerability allows an attacker to craft JSON objects that cause hash collisions, resulting in resource exhaustion and service disruption. Both vulnerabilities impact jq's ability to safely process JSON data, potentially affecting systems relying on jq for JSON manipulation.
Mitigation Recommendations
Red Hat has released updated jq packages (version 1.6-6.el8_8.4) for Red Hat Enterprise Linux 8.8 variants that address these vulnerabilities. Users should apply these official updates promptly to remediate the issues. For detailed update instructions, refer to the Red Hat advisory at https://access.redhat.com/articles/11258. No additional mitigation steps 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-2026:18046
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-40164"]
- Cvss Version
- null
Threat ID: 6a1f4e85e29bf47b5007dc8a
Added to database: 06/02/2026, 21:43:33 UTC
Last enriched: 07/10/2026, 13:00:30 UTC
Last updated: 07/31/2026, 19:24:46 UTC
Views: 190
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