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| author | android-build-team Robot <android-build-team-robot@google.com> | 2017-09-15 19:20:12 +0000 |
|---|---|---|
| committer | android-build-team Robot <android-build-team-robot@google.com> | 2017-09-15 19:20:12 +0000 |
| commit | 6dc8a74c8e2eb70363b64b09a51d0c74298c0ece (patch) | |
| tree | 2e29b5f8c53c80bbf310cf3b99166ef49a9fcc3d | |
| parent | 61b542ef379106207b419360c7f2761208e9dfbf (diff) | |
| parent | a0f99f6177a862e7cc22669ad04b975f685bd402 (diff) | |
| download | dnsmasq-nougat-mr1.6-release.tar.gz | |
release-request-e0cffa21-0c90-4d13-9f8c-0965a868cb5d-for-git_nyc-mr1-security-f-release-4299435 snap-temp-L00000000103192657android-7.1.1_r56nougat-mr1.6-release
Change-Id: I82c7aadabb5949fc1de3317c0a16f25b1c0ffc42
| -rwxr-xr-x | src/rfc1035.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/rfc1035.c b/src/rfc1035.c index 8ae0bfa..e440e8a 100755 --- a/src/rfc1035.c +++ b/src/rfc1035.c @@ -48,7 +48,7 @@ static int extract_name(HEADER *header, size_t plen, unsigned char **pp, /* end marker */ { /* check that there are the correct no of bytes after the name */ - if (!CHECK_LEN(header, p, plen, extrabytes)) + if (!CHECK_LEN(header, p1 ? p1 : p, plen, extrabytes)) return 0; if (isExtract) @@ -1142,6 +1142,9 @@ size_t answer_request(HEADER *header, char *limit, size_t qlen, struct crec *crecp; int nxdomain = 0, auth = 1, trunc = 0; struct mx_srv_record *rec; + + // Make sure we do not underflow here too. + if (qlen > (size_t)(limit - ((char *)header))) return 0; /* If there is an RFC2671 pseudoheader then it will be overwritten by partial replies, so we have to do a dry run to see if we can answer |