b7ef4071c4
This addresses CVE-2025-27613, Gitk can create and truncate a user's files: 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). * js/fix-open-exec: gitk: sanitize 'open' arguments: revisit recently updated 'open' calls gitk: sanitize 'open' arguments: command pipeline gitk: collect construction of blameargs into a single conditional gitk: sanitize 'open' arguments: simple commands, readable and writable gitk: sanitize 'open' arguments: simple commands with redirections gitk: sanitize 'open' arguments: simple commands gitk: sanitize 'exec' arguments: redirect to process gitk: sanitize 'exec' arguments: redirections and background gitk: sanitize 'exec' arguments: redirections gitk: sanitize 'exec' arguments: 'eval exec' gitk: sanitize 'exec' arguments: simple cases gitk: have callers of diffcmd supply pipe symbol when necessary gitk: treat file names beginning with "|" as relative paths Signed-off-by: Johannes Sixt <j6t@kdbg.org>