memzap

replay memory writes
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commit f4e8603d28528fe54269d299aefcdc0bfa932c61
parent 5f721ec36e692243453e5d728aeb8f0710bfcfc2
Author: sin <sin@2f30.org>
Date:   Sun Mar  3 16:07:04 +0000

mdiff: Check if the user requested to read an out of bounds region

Diffstat:
mdiff.c | 3+++
1 file changed, 3 insertions(+), 0 deletions(-)
diff --git a/mdiff.c b/mdiff.c @@ -101,6 +101,9 @@ mdiff_read_diff(int fd, struct mdiff_hdr *hdr, uint32_t region) if (fd < 0 || !hdr) return NULL; + if (region >= hdr->nregions) + return NULL; + offset = sizeof(*hdr); ret = lseek(fd, offset, SEEK_SET); if (ret < 0)