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util/libreboot-utils: fix div by zero in rsize

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Signed-off-by: Leah Rowe <leah@libreboot.org>
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Leah Rowe
2026-03-27 17:14:10 +00:00
parent db6e817ded
commit 0cc4ff7b3b
1 changed files with 3 additions and 0 deletions
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util/libreboot-utils/lib/rand.c
+3
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@@ -83,6 +83,9 @@ size_t
rsize(size_t n) rsize(size_t n)
{ {
size_t rval = SIZE_MAX; size_t rval = SIZE_MAX;
if (!n)
err_no_cleanup(0, EFAULT, "rsize: division by zero");
for (; rval >= SIZE_MAX - (SIZE_MAX % n); rset(&rval, sizeof(rval))); for (; rval >= SIZE_MAX - (SIZE_MAX % n); rset(&rval, sizeof(rval)));
return rval % n; return rval % n;