[Webkit-unassigned] [Bug 190281] New: Validation in Connection::readBytesFromSocket() is too aggressive
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Thu Oct 4 10:06:03 PDT 2018
https://bugs.webkit.org/show_bug.cgi?id=190281
Bug ID: 190281
Summary: Validation in Connection::readBytesFromSocket() is too
aggressive
Product: WebKit
Version: WebKit Nightly Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: Platform
Assignee: webkit-unassigned at lists.webkit.org
Reporter: annulen at yandex.ru
Since r217206 Connection::readBytesFromSocket() validates size of control message. However, it compares cmsg_len with attachmentMaxAmount, while Connection::sendOutgoingMessage() computes it as CMSG_LEN(sizeof(int) * attachmentFDBufferLength) where attachmentFDBufferLength <= attachmentMaxAmount. This mismatch between sender and receiver leads to possibility of assertion failure with large number of attachments, e.g. here 62 attachments have cmsg_length == 264.
--
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20181004/bea35f87/attachment-0001.html>
More information about the webkit-unassigned
mailing list