Critical Security Update for vim: Addressing Multiple Vulnerabilities
Summary
ALSA-2026:47982: Important: vim security update. Affects vim-X11 versions < 2:8.2.2637-26.el9_8.13. Fixed in 2:8.2.2637-26.el9_8.13. How to fix ↓
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Background
Vim (Vi IMproved) is a highly configurable text editor built to enable efficient text editing. It is an enhanced version of the original vi editor, featuring a wide array of functionalities including syntax highlighting, multi-level undo, and support for plugins. Despite its robustness, recent vulnerabilities have been identified that could compromise its security, particularly in the context of handling specific file types and user inputs.
Vulnerability Detail
The vulnerabilities in Vim stem from improper handling of certain inputs, leading to potential Denial of Service (DoS) attacks and arbitrary code execution. Specifically, issues such as stack out-of-bounds writes in the spell_soundfold_sofo() function and vulnerabilities in Python and PHP omni-completion mechanisms can be exploited by malicious users. These vulnerabilities could allow attackers to execute arbitrary commands or crash the editor, posing significant risks to users and systems relying on Vim for text editing.
How To Fix
Minimum fixed version
2:8.2.2637-26.el9_8.13
This is the first release that contains the fix.
sudo dnf update vim-X11Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, users are advised to avoid opening untrusted files or using features that involve omni-completion until the update has been applied. This can help mitigate the risk of exploitation until the vulnerabilities are resolved.
Conclusion
In summary, the recent security vulnerabilities in Vim pose significant risks, including potential Denial of Service and arbitrary code execution. Users are strongly encouraged to update their Vim packages to the latest patched version to mitigate these risks. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities in open-source software.
See every vulnerability recorded for vim-X11 →
FAQ
The main vulnerabilities include Denial of Service via stack out-of-bounds write, arbitrary code execution through malicious docstrings in Python, and crafted files in omni-completion.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. By uploading your manifest file like package-lock.json, you can check for vulnerabilities without needing to install any software.
If an immediate update is not possible, avoid opening untrusted files and refrain from using features that may expose the vulnerabilities until you can apply the patch.
For detailed information, refer to the CVE pages associated with the vulnerabilities, such as CVE-2026-55693, CVE-2026-57455, CVE-2026-57456, CVE-2026-59856, and CVE-2026-59858.
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Related vulnerabilities
Recent vulnerabilities recorded for vim-X11.
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