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m68k: sun3: Replace vsprintf() with bounded vsnprintf()

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vsprintf() performs no bounds checking and can overflow - replace it
with the safer vsnprintf().

Also remove the useless '+ 1' that is a leftover of commit 66ed28ea09
("m68k: sun3: Remove unused vsprintf() return value in prom_printf()").

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://patch.msgid.link/20260117202152.1036278-2-thorsten.blum@linux.dev
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Thorsten Blum 2026-01-17 21:21:50 +01:00 • committed by Geert Uytterhoeven
parent f16a9577b7
commit cb39cf99d8
1 changed files with 2 additions and 2 deletions
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4
arch/m68k/sun3/prom/printf.c
View file

@ -30,9 +30,9 @@ prom_printf(char *fmt, ...)
#ifdef CONFIG_KGDB
ppbuf[0] = 'O';
vsprintf(ppbuf + 1, fmt, args) + 1;
vsnprintf(ppbuf + 1, sizeof(ppbuf) - 1, fmt, args);
#else
vsprintf(ppbuf, fmt, args);
vsnprintf(ppbuf, sizeof(ppbuf), fmt, args);
#endif
bptr = ppbuf;