coreutils/coreutils-8.24-CVE-2018-17942.patch
2019-08-28 21:01:13 +10:00

14 lines
755 B
Diff

diff -urN coreutils-8.24/lib/vasnprintf.c coreutils-8.24-patched/lib/vasnprintf.c
--- coreutils-8.24/lib/vasnprintf.c 2015-06-16 15:04:34.000000000 +1000
+++ coreutils-8.24-patched/lib/vasnprintf.c 2019-08-28 20:59:06.000772714 +1000
@@ -849,7 +849,9 @@
size_t a_len = a.nlimbs;
/* 0.03345 is slightly larger than log(2)/(9*log(10)). */
size_t c_len = 9 * ((size_t)(a_len * (GMP_LIMB_BITS * 0.03345f)) + 1);
- char *c_ptr = (char *) malloc (xsum (c_len, extra_zeroes));
+ /* We need extra_zeroes bytes for zeroes, followed by c_len bytes for the
+ digits of a, followed by 1 byte for the terminating NUL. */
+ char *c_ptr = (char *) malloc (xsum (xsum (extra_zeroes, c_len), 1));
if (c_ptr != NULL)
{
char *d_ptr = c_ptr;