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| author | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2020-07-17 18:17:41 +0100 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2020-07-17 18:27:24 +0100 |
| commit | d620bac888923524f8b8407dbf35f6d2b3b7ddb2 (patch) | |
| tree | 61adbf3fcef193918c0645a348623865a2be7a36 /src | |
| parent | 73336e08902a7e826f7d960453df037380266186 (diff) | |
| download | slirp-d620bac888923524f8b8407dbf35f6d2b3b7ddb2.zip slirp-d620bac888923524f8b8407dbf35f6d2b3b7ddb2.tar.gz slirp-d620bac888923524f8b8407dbf35f6d2b3b7ddb2.tar.bz2 | |
ip_stripoptions use memmove
ip_stripoptions is moving data long in the same buffer; that's undefined
with memcpy, use memmove.
Buglink: https://bugs.launchpad.net/qemu/+bug/1878043
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/ip_input.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/ip_input.c b/src/ip_input.c index 89a01d4..7f017a2 100644 --- a/src/ip_input.c +++ b/src/ip_input.c @@ -454,7 +454,7 @@ void ip_stripoptions(register struct mbuf *m, struct mbuf *mopt) olen = (ip->ip_hl << 2) - sizeof(struct ip); opts = (char *)(ip + 1); i = m->m_len - (sizeof(struct ip) + olen); - memcpy(opts, opts + olen, (unsigned)i); + memmove(opts, opts + olen, (unsigned)i); m->m_len -= olen; ip->ip_hl = sizeof(struct ip) >> 2; |