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Backport: Fix possible overflow with 5-digit+ UIDs

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Signed-off-by: AnErrupTion <anerruption@disroot.org>
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AnErrupTion
2025-08-02 01:00:56 +02:00
parent 3359127a06
commit b7d81a9b51
1 changed files with 1 additions and 1 deletions
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2
src/auth.zig
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@@ -213,7 +213,7 @@ fn setXdgEnv(tty_str: [:0]u8, maybe_desktop_name: ?[:0]const u8, maybe_xdg_deskt
// directory. // directory.
if (builtin.os.tag != .freebsd) { if (builtin.os.tag != .freebsd) {
const uid = interop.unistd.getuid(); const uid = interop.unistd.getuid();
var uid_buffer: [10 + @sizeOf(u32) + 1]u8 = undefined; var uid_buffer: [32]u8 = undefined; // No UID can be larger than this
const uid_str = try std.fmt.bufPrintZ(&uid_buffer, "/run/user/{d}", .{uid}); const uid_str = try std.fmt.bufPrintZ(&uid_buffer, "/run/user/{d}", .{uid});
_ = interop.stdlib.setenv("XDG_RUNTIME_DIR", uid_str, 0); _ = interop.stdlib.setenv("XDG_RUNTIME_DIR", uid_str, 0);