CVE-2025-27613 — Gitk can create and truncate files in the user's home directory

Affected: j6t gitk

Gitk is a Tcl/Tk based Git history browser. Starting with 1.7.0, when a user clones an untrusted repository and runs gitk without additional command arguments, files for which the user has write permission can be created and truncated. The option Support per-file encoding must have been enabled before in Gitk's Preferences. This option is disabled by default. The same happens when Show origin of this line is used in the main window (regardless of whether Support per-file encoding is enabled or not). This vulnerability is fixed in 2.43.7, 2.44.4, 2.45.4, 2.46.4, 2.47.3, 2.48.2, 2.49.1, and 2.50.1.

USN-7626-1 — git vulnerabilities

Affected: Ubuntu:Pro:16.04:LTS: git, Ubuntu:Pro:18.04:LTS: git, Ubuntu:Pro:20.04:LTS: git, Ubuntu:22.04:LTS: git, Ubuntu:24.04:LTS: git

Avi Halachmi discovered that Git incorrectly managed file modification constraints with Gitk. An attacker could possibly use this issue to create or write to arbitrary files on the system. (CVE-2025-27613)

Avi Halachmi discovered that Git incorrectly handled arguments when invoking the Gitk utility. If a user were tricked into cloning a malicious Git repository, an attacker could possibly use this issue to run arbitrary commands. This issue only affected Ubuntu 24.04 LTS, Ubuntu 24.10, and Ubuntu 25.04. (CVE-2025-27614)

Johannes Sixt discovered that Git incorrectly managed file modification constraints with Git GUI. If a user were tricked into editing a file in a malicious Git repository, an attacker could possibly use this issue to create or write to arbitrary files on the system. (CVE-2025-46835)

David Leadbeater discovered that Git incorrectly stripped CRLF characters when editing configuration files. An attacker could possibly use this issue to execute arbitrary code. (CVE-2025-48384)

David Leadbeater discovered that Git incorrectly handled verification when fetching remote Git repositories. An attacker could possibly use this issue to perform protocol injection, leading to arbitrary code execution. This issue only affected Ubuntu 24.04 LTS, Ubuntu 24.10, and Ubuntu 25.04. (CVE-2025-48385)

David Leadbeater discovered that Git incorrectly handled memory with the wincred credential helper. An attacker could possibly use this issue to cause a denial of service. (CVE-20…

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CVE-2025-27613 — Gitk can create and truncate files in the user's home directory

USN-7626-1 — git vulnerabilities