RHSA-2026:97699HighCVSS 7.5

Red Hat Security Advisory: rhc security, bug fix, and enhancement update

Published
November 10, 2026
Last Modified
November 11, 2026

🔗 CVE IDs covered (1)

CVE-2026-42504 →

📋 Description

CVE-2026-42504 — mime: golang: Golang MIME: Denial of Service via maliciously-crafted MIME header

🎯 Affected products27

  • Red Hat Enterprise Linux AppStream (v. 9)
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • rhc-1:0.2.7-15.el9_9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • rhc-1:0.2.7-15.el9_9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • rhc-1:0.2.7-15.el9_9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • rhc-1:0.2.7-15.el9_9.src as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • rhc-1:0.2.7-15.el9_9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • rhc-debuginfo-1:0.2.7-15.el9_9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • rhc-debuginfo-1:0.2.7-15.el9_9.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • rhc-debuginfo-1:0.2.7-15.el9_9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • rhc-debuginfo-1:0.2.7-15.el9_9.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • rhc-debuginfo-1:0.2.7-15.el9_9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • rhc-debuginfo-1:0.2.7-15.el9_9.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • rhc-debuginfo-1:0.2.7-15.el9_9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • rhc-debuginfo-1:0.2.7-15.el9_9.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • rhc-debugsource-1:0.2.7-15.el9_9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • rhc-debugsource-1:0.2.7-15.el9_9.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • rhc-debugsource-1:0.2.7-15.el9_9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • rhc-debugsource-1:0.2.7-15.el9_9.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • rhc-debugsource-1:0.2.7-15.el9_9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • rhc-debugsource-1:0.2.7-15.el9_9.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • rhc-debugsource-1:0.2.7-15.el9_9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • rhc-debugsource-1:0.2.7-15.el9_9.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • rhc-devel-1:0.2.7-15.el9_9.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • rhc-devel-1:0.2.7-15.el9_9.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • rhc-devel-1:0.2.7-15.el9_9.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • rhc-devel-1:0.2.7-15.el9_9.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: To mitigate this issue, restrict network access to services that process MIME headers from untrusted sources. Implement input validation and sanitization for all incoming data, especially MIME headers, to prevent maliciously crafted content from being processed by applications utilizing the vulnerable Golang MIME package.

🔗 References (7)