The use of strcpy() to remove characters at the start of a string is safe in U-Boot, since we know the implementation. But in os.c we are using the C library's strcpy() function, where this behaviour is not permitted.
Update the code to use memmove() instead.
Reported-by: Coverity (CID: 173279) Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v3: - Fix commit message to say memmove() instead of memcpy()
Changes in v2: - Also remove the leading / from the "/spl" path - Correct the string calculation
arch/sandbox/cpu/os.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c index 07e46471fe5..04669bfc177 100644 --- a/arch/sandbox/cpu/os.c +++ b/arch/sandbox/cpu/os.c @@ -641,9 +641,10 @@ int os_find_u_boot(char *fname, int maxlen) }
/* Look for 'u-boot' in the parent directory of spl/ */ - p = strstr(fname, "/spl/"); + p = strstr(fname, "spl/"); if (p) { - strcpy(p, p + 4); + /* Remove the "spl" characters */ + memmove(p, p + 4, strlen(p + 4) + 1); fd = os_open(fname, O_RDONLY); if (fd >= 0) { close(fd);