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 8.4 contains two vulnerabilities: an out-of-bounds read in the jv_parse_sized() function when handling error formatting for non-NUL-terminated buffers (CVE-2026-39979), and a denial of service vulnerability via crafted JSON objects that cause hash collisions (CVE-2026-40164). These issues can lead to potential memory safety violations and service disruption. Red Hat has released updated jq packages to remediate these vulnerabilities as detailed in advisory RHSA-2026:18048.
Potential Impact
The out-of-bounds read vulnerability could lead to memory corruption or crashes when jq processes malformed JSON input. The denial of service vulnerability allows an attacker to cause jq to consume excessive resources or crash by submitting specially crafted JSON objects that cause hash collisions. Both vulnerabilities impact jq usage on affected Red Hat Enterprise Linux 8.4 systems, potentially disrupting JSON processing tasks.
Mitigation Recommendations
Red Hat has released updated jq packages addressing these vulnerabilities. Users of Red Hat Enterprise Linux 8.4 Advanced Update Support and Extended Update Support should apply the security update as described in advisory RHSA-2026:18048. Refer to https://access.redhat.com/articles/11258 for detailed update instructions. Applying these updates mitigates the vulnerabilities. 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.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The jq utility in Red Hat Enterprise Linux 8.4 contains two vulnerabilities: an out-of-bounds read in the jv_parse_sized() function when handling error formatting for non-NUL-terminated buffers (CVE-2026-39979), and a denial of service vulnerability via crafted JSON objects that cause hash collisions (CVE-2026-40164). These issues can lead to potential memory safety violations and service disruption. Red Hat has released updated jq packages to remediate these vulnerabilities as detailed in advisory RHSA-2026:18048.
Potential Impact
The out-of-bounds read vulnerability could lead to memory corruption or crashes when jq processes malformed JSON input. The denial of service vulnerability allows an attacker to cause jq to consume excessive resources or crash by submitting specially crafted JSON objects that cause hash collisions. Both vulnerabilities impact jq usage on affected Red Hat Enterprise Linux 8.4 systems, potentially disrupting JSON processing tasks.
Mitigation Recommendations
Red Hat has released updated jq packages addressing these vulnerabilities. Users of Red Hat Enterprise Linux 8.4 Advanced Update Support and Extended Update Support should apply the security update as described in advisory RHSA-2026:18048. Refer to https://access.redhat.com/articles/11258 for detailed update instructions. Applying these updates mitigates the vulnerabilities. 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-2026:18048
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-40164"]
- Cvss Version
- null
Threat ID: 6a1f4e85e29bf47b5007dc83
Added to database: 06/02/2026, 21:43:33 UTC
Last enriched: 07/10/2026, 12:59:16 UTC
Last updated: 07/31/2026, 19:24:46 UTC
Views: 96
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