[pseudo] [PATCH 1/7] pseudo.h: Avoid accessing unallocated memory
Richard Purdie <[email protected]> Wed, 1 Jul 2026 14:13:30 +0100
| Newsgroups | org.yoctoproject.lists.yocto-patches |
|---|---|
| Message-ID | <[email protected]> |
We can call STARTSWITH in cases where the item being searched for is longer than the string itself. Switch from memcmp to strncmp to avoid accessing unassigned memory. Signed-off-by: Richard Purdie <[email protected]> --- pseudo.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/pseudo.h b/pseudo.h index b6c13f2..1152c19 100644 --- a/pseudo.h +++ b/pseudo.h @@ -99,7 +99,7 @@ extern char *pseudo_version; #define PSEUDO_LIBDIR "lib" #endif -#define STARTSWITH(x, y) (!memcmp((x), (y), sizeof(y) - 1)) +#define STARTSWITH(x, y) (strncmp(y, x, strlen(y)) == 0) #ifndef PSEUDO_LOCALSTATEDIR #define PSEUDO_LOCALSTATEDIR "var/pseudo"