RHSA-2026:80507HighCVSS 7.8

Red Hat Security Advisory: emacs security update

Published
October 12, 2026
Last Modified
October 12, 2026

🔗 CVE IDs covered (2)

CVE-2026-77219 →CVE-2026-79992 →

📋 Description

CVE-2026-77219 — emacs: GNU Emacs: Heap over-read leading to information disclosure via crafted image CVE-2026-79992 — emacs: emacs: Command injection via crafted filenames in TRAMP

🎯 Affected products39

  • Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-1:27.2-18.el9_8.2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-1:27.2-18.el9_8.2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-1:27.2-18.el9_8.2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-1:27.2-18.el9_8.2.src as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-1:27.2-18.el9_8.2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-common-1:27.2-18.el9_8.2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-common-1:27.2-18.el9_8.2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-common-1:27.2-18.el9_8.2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-common-1:27.2-18.el9_8.2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-common-debuginfo-1:27.2-18.el9_8.2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-common-debuginfo-1:27.2-18.el9_8.2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-common-debuginfo-1:27.2-18.el9_8.2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-common-debuginfo-1:27.2-18.el9_8.2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-debuginfo-1:27.2-18.el9_8.2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-debuginfo-1:27.2-18.el9_8.2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-debuginfo-1:27.2-18.el9_8.2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-debuginfo-1:27.2-18.el9_8.2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-debugsource-1:27.2-18.el9_8.2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-debugsource-1:27.2-18.el9_8.2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-debugsource-1:27.2-18.el9_8.2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-debugsource-1:27.2-18.el9_8.2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-filesystem-1:27.2-18.el9_8.2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-lucid-1:27.2-18.el9_8.2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-lucid-1:27.2-18.el9_8.2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-lucid-1:27.2-18.el9_8.2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-lucid-1:27.2-18.el9_8.2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-lucid-debuginfo-1:27.2-18.el9_8.2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-lucid-debuginfo-1:27.2-18.el9_8.2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • emacs-lucid-debuginfo-1:27.2-18.el9_8.2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • +9 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: To mitigate this issue, users should avoid opening or displaying untrusted PBM, PPM, or PGM image files within GNU Emacs. Exercise caution when handling image files from unknown or unverified sources. Workaround: Users of Emacs TRAMP should avoid processing untrusted filenames or interacting with remote systems that may contain maliciously crafted file names. This operational control reduces the risk of local shell command injection.

🔗 References (5)