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OpenAdvisories
High RHSA-2026:61907 3 CVEs

Red Hat Security Advisory: runc security update

Published Sep 1, 2026 · Updated Oct 20, 2026

Ecosystem: Red Hat

Fixed packages 3

ReleasePackageFixed in
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::appstream runc 4:1.2.9-1.el9_4.2
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::appstream runc-debuginfo 4:1.2.9-1.el9_4.2
Red Hat · RHEL 9.4 E4S rhel_e4s:9.4::appstream runc-debugsource 4:1.2.9-1.el9_4.2

Vulnerabilities 3

  • High 7.5
    CVE-2026-32280

    Unexpected work during chain building in crypto/x509

    During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 an…

    Go standard library crypto/x509 golang go Debian Ubuntu Azure Linux Alpine Wolfi Go
  • High 7.5
    CVE-2026-32281

    Inefficient policy validation in crypto/x509

    Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chain…

    Go standard library crypto/x509 golang go Debian Ubuntu Azure Linux Alpine Wolfi Go
  • High 7.5
    CVE-2026-33810

    Case-sensitive excludedSubtrees name constraints cause Auth Bypass in crypto/x509

    When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to wildcard DNS SANs which use a different case than the constraint. This only affects validation of otherwise trusted certificate chains, issu…

    Go standard library crypto/x509 golang go Debian Ubuntu Azure Linux Alpine Wolfi Go

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2456333
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2456335
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2456339
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_61907.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-32280
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-32280
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-32280
  • article
    https://go.dev/cl/758320
  • article
    https://go.dev/issue/78282
  • article
    https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU
  • advisory
    https://pkg.go.dev/vuln/GO-2026-4947
  • report
    https://access.redhat.com/security/cve/CVE-2026-32281
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-32281
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-32281
  • article
    https://go.dev/cl/758061
  • article
    https://go.dev/issue/78281
  • advisory
    https://pkg.go.dev/vuln/GO-2026-4946
  • report
    https://access.redhat.com/security/cve/CVE-2026-33810
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-33810
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-33810
  • article
    https://go.dev/cl/763763
  • article
    https://go.dev/issue/78332
  • advisory
    https://pkg.go.dev/vuln/GO-2026-4866