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Ubuntu 24.04 LTS Emacs Moderately Unsafe Code Execution Flaw USN-8011-1

ubuntu
Calendar Grey February 4, 2026
Dist Ubuntu Esm H88
Multiple security issues were resolved in Emacs, affecting several Ubuntu distributions with potential arbitrary code execution risks.
Several security issues were fixed in Emacs.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Several security issues were fixed in Emacs. Software Description: - emacs: An extensible, customizable, free/libre text editor \u2014 and more. Details: It was discovered that Emacs could trigger unsafe Lisp macro expansion, when a user invoked elisp-completion-at-point on untrusted Emacs Lisp source code. An attacker could possibly use this issue to execute arbitrary code. (CVE-2024-53920) It was discovered that Emacs did not properly sanitize input when handling certain URI schemes. An attacker could possibly use this issue to execute arbitrary shell commands by tricking a user into opening a specially crafted URL. (CVE-2025-1244)

Topics%20covered

Topics Covered

security advisory Ubuntu arbitrary code emacs security issues shell command

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 24.04 LTS emacs 1:29.3+1-1ubuntu2+esm3 Available with Ubuntu Pro emacs-bin-common 1:29.3+1-1ubuntu2+esm3 Available with Ubuntu Pro emacs-common 1:29.3+1-1ubuntu2+esm3 Available with Ubuntu Pro emacs-el 1:29.3+1-1ubuntu2+esm3 Available with Ubuntu Pro emacs-gtk 1:29.3+1-1ubuntu2+esm3 Available with Ubuntu Pro emacs-lucid 1:29.3+1-1ubuntu2+esm3 Available with Ubuntu Pro emacs-nox 1:29.3+1-1ubuntu2+esm3 Available with Ubuntu Pro emacs-pgtk 1:29.3+1-1ubuntu2+esm3 Available with Ubuntu Pro Ubuntu 22.04 LTS emacs 1:27.1+1-3ubuntu5.2+esm1 Available with Ubuntu Pro emacs-bin-common 1:27.1+1-3ubuntu5.2+esm1 Available with Ubuntu Pro emacs-common 1:27.1+1-3ubuntu5.2+esm1 Available with Ubuntu Pro emacs-el 1:27.1+1-3ubuntu5.2+esm1 Available with Ubuntu Pro emacs-gtk 1:27.1+1-3ubuntu5.2+esm1 Available with Ubuntu Pro emacs-lucid 1:27.1+1-3ubuntu5.2+esm1 Available with Ubuntu Pro emacs-nox 1:27.1+1-3ubuntu5.2+esm1 Available with Ubuntu Pro Ubuntu 20.04 LTS emacs 1:26.3+1-1ubuntu2+esm2 Available with Ubuntu Pro emacs-bin-common 1:26.3+1-1ubuntu2+esm2 Available with Ubuntu Pro emacs-common 1:26.3+1-1ubuntu2+esm2 Available with Ubuntu Pro emacs-el 1:26.3+1-1ubuntu2+esm2 Available with Ubuntu Pro emacs-gtk 1:26.3+1-1ubuntu2+esm2 Available with Ubuntu Pro emacs-lucid 1:26.3+1-1ubuntu2+esm2 Available with Ubuntu Pro emacs-nox 1:26.3+1-1ubuntu2+esm2 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-8011-1

CVE-2024-53920, CVE-2025-1244

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8011-1

Topics%20covered

Topics Covered

security advisory Ubuntu arbitrary code emacs security issues shell command

Package Information

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