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[NSS] add a defensive check for large ssl_DefSend return values.

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This commit is contained in:
John Schanck 2024-01-24 16:51:34 +01:00 • committed by roytam1
commit 266b96a53a
1 changed files with 6 additions and 1 deletions
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7
security/nss/lib/ssl/sslsecur.c
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@ -441,7 +441,12 @@ ssl_SendSavedWriteData(sslSocket *ss)
if (rv < 0) {
return rv;
}
ss->pendingBuf.len -= rv;
if (rv > ss->pendingBuf.len) {
PORT_Assert(0); /* This shouldn't happen */
ss->pendingBuf.len = 0;
} else {
ss->pendingBuf.len -= rv;
}
if (ss->pendingBuf.len > 0 && rv > 0) {
/* UGH !! This shifts the whole buffer down by copying it */
PORT_Memmove(ss->pendingBuf.buf, ss->pendingBuf.buf + rv,