RHSA-2026:90812HighCVSS 8.2

Red Hat Security Advisory: cjose security update

Published
October 29, 2026
Last Modified
October 31, 2026

🔗 CVE IDs covered (1)

CVE-2026-53938 →

📋 Description

CVE-2026-53938 — cjose: cjose: Heap buffer overflow in AES Key Wrap decryption leads to denial of service

🎯 Affected products33

  • Red Hat Enterprise Linux AppStream (v. 9)
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • cjose-0:0.6.1-17.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-0:0.6.1-17.el9_8.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-0:0.6.1-17.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-0:0.6.1-17.el9_8.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-0:0.6.1-17.el9_8.1.src as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-0:0.6.1-17.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-debuginfo-0:0.6.1-17.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-debuginfo-0:0.6.1-17.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • cjose-debuginfo-0:0.6.1-17.el9_8.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-debuginfo-0:0.6.1-17.el9_8.1.i686 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • cjose-debuginfo-0:0.6.1-17.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-debuginfo-0:0.6.1-17.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • cjose-debuginfo-0:0.6.1-17.el9_8.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-debuginfo-0:0.6.1-17.el9_8.1.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • cjose-debuginfo-0:0.6.1-17.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-debuginfo-0:0.6.1-17.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • cjose-debugsource-0:0.6.1-17.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-debugsource-0:0.6.1-17.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • cjose-debugsource-0:0.6.1-17.el9_8.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-debugsource-0:0.6.1-17.el9_8.1.i686 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • cjose-debugsource-0:0.6.1-17.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-debugsource-0:0.6.1-17.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • cjose-debugsource-0:0.6.1-17.el9_8.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-debugsource-0:0.6.1-17.el9_8.1.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • cjose-debugsource-0:0.6.1-17.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • cjose-debugsource-0:0.6.1-17.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • cjose-devel-0:0.6.1-17.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • cjose-devel-0:0.6.1-17.el9_8.1.i686 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • +3 more not shown

✅ 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: Applications using `cjose` should be configured to reject JWEs that specify the AES Key Wrap key-management algorithms (`A128KW`, `A192KW`, `A256KW`) when processing untrusted input. This application-layer rejection prevents the vulnerable decryption path from being exercised.

🔗 References (4)