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drm/modes: Use strscpy() to copy command-line mode name

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The mode name in struct drm_cmdline_mode can hold 32 characters at most,
which can easily get overrun. Switch to strscpy() to prevent such a
thing.

Reported-by: coverity-bot <keescook+coverity-bot@chromium.org>
Addresses-Coverity-ID: 1527354 ("Security best practices violations")
Fixes: a7ab155397 ("drm/modes: Switch to named mode descriptors")
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://lore.kernel.org/r/20221128081938.742410-2-maxime@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
This commit is contained in:
Maxime Ripard 2022-11-28 09:19:37 +01:00
parent b99070c07b
commit 0f9aa074c9
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GPG key ID: E3EF0D6F671851C5
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/drm_modes.c
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@ -2316,7 +2316,7 @@ static int drm_mode_parse_cmdline_named_mode(const char *name,
if (ret != name_end)
continue;
strcpy(cmdline_mode->name, mode->name);
strscpy(cmdline_mode->name, mode->name, sizeof(cmdline_mode->name));
cmdline_mode->pixel_clock = mode->pixel_clock_khz;
cmdline_mode->xres = mode->xres;
cmdline_mode->yres = mode->yres;