mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-21 12:30:06 +00:00
Fix invalid pointer dereference in wcpcpy_chk
The src pointer is const and points to a different object, so accessing dest via src is invalid. Reviewed-by: Florian Weimer <fweimer@redhat.com>
This commit is contained in:
parent
e5ece9de14
commit
3fa20d59d9
@ -28,13 +28,12 @@ __wcpcpy_chk (wchar_t *dest, const wchar_t *src, size_t destlen)
|
||||
{
|
||||
wchar_t *wcp = (wchar_t *) dest - 1;
|
||||
wint_t c;
|
||||
const ptrdiff_t off = src - dest + 1;
|
||||
|
||||
do
|
||||
{
|
||||
if (__glibc_unlikely (destlen-- == 0))
|
||||
__chk_fail ();
|
||||
c = wcp[off];
|
||||
c = *src++;
|
||||
*++wcp = c;
|
||||
}
|
||||
while (c != L'\0');
|
||||
|
Loading…
Reference in New Issue
Block a user