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OpenAdvisories
High RHSA-2026:18042 2 CVEs

Red Hat Security Advisory: jq security update

Published May 19, 2026 · Updated Oct 2, 2026

Ecosystem: Red Hat

Fixed packages 6

ReleasePackageFixed in
Red Hat · RHEL 9.6 EUS rhel_eus:9.6::baseos jq 0:1.6-17.el9_6.4
Red Hat · RHEL 9.6 EUS rhel_eus:9.6::baseos jq-debuginfo 0:1.6-17.el9_6.4
Red Hat · RHEL 9.6 EUS rhel_eus:9.6::baseos jq-debugsource 0:1.6-17.el9_6.4
Red Hat · RHEL 9.6 EUS rhel_eus:9.6::crb jq-debuginfo 0:1.6-17.el9_6.4
Red Hat · RHEL 9.6 EUS rhel_eus:9.6::crb jq-debugsource 0:1.6-17.el9_6.4
Red Hat · RHEL 9.6 EUS rhel_eus:9.6::crb jq-devel 0:1.6-17.el9_6.4

Vulnerabilities 2

  • High 7.5
    CVE-2026-40164

    jq: Algorithmic complexity DoS via hardcoded MurmurHash3 seed

    jq is a command-line JSON processor. Before commit 0c7d133c3c7e37c00b6d46b658a02244fdd3c784, jq used MurmurHash3 with a hardcoded, publicly visible seed (0x432A9843) for all JSON object hash table operations, which allowed an attacker to precompute key collis…

    jqlang jq jq jq Debian Ubuntu Azure Linux Alpine
  • Medium 6.9
    CVE-2026-39979

    jq: Out-of-Bounds Read in jv_parse_sized() Error Formatting for Non-NUL-Terminated Counted Buffers

    jq is a command-line JSON processor. In commits before 2f09060afab23fe9390cce7cb860b10416e1bf5f, the jv_parse_sized() API in libjq accepts a counted buffer with an explicit length parameter, but its error-handling path formats the input buffer using %s in jv_…

    jqlang jq jq jq Debian Ubuntu Azure Linux Alpine

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2458077
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2458084
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_18042.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-39979
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-39979
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-39979
  • article
    https://github.com/jqlang/jq/commit/2f09060afab23fe9390cce7cb860b10416e1bf5f
  • article
    https://github.com/jqlang/jq/security/advisories/GHSA-2hhh-px8h-355p
  • report
    https://access.redhat.com/security/cve/CVE-2026-40164
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-40164
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-40164
  • article
    https://github.com/jqlang/jq/commit/0c7d133c3c7e37c00b6d46b658a02244fdd3c784
  • article
    https://github.com/jqlang/jq/security/advisories/GHSA-wwj8-gxm6-jc29