Date: Mon, 10 Oct 2016 23:25:55 +0530 (IST) From: P J P <ppandit@...hat.com> To: oss security list <oss-security@...ts.openwall.com> cc: Sabrina Dubroca <sdubroca@...hat.com> Subject: CVE-2016-7039 Kernel: net: unbounded recursion in the vlan GRO processing Hello, Linux kernel built with the 802.1Q/802.1ad VLAN(CONFIG_VLAN_8021Q) OR Virtual eXtensible Local Area Network(CONFIG_VXLAN) with Transparent Ethernet Bridging(TEB) GRO support, is vulnerable to a stack overflow issue. It could occur while receiving large packets via GRO path; As an unlimited recursion could unfold in both VLAN and TEB modules, leading to a stack corruption in the kernel. A remote user could use this flaw to cause kernel panic by sending malicious packets to a server that has GRO enabled. Please see a proposed patch to fix this issue attached herein. 'CVE-2016-7039' has been assigned to this issue by Red Hat Inc. Reference: ---------- -> https://bugzilla.redhat.com/show_bug.cgi?id=1375944 Thank you. -- Prasad J Pandit / Red Hat Product Security Team 47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F View attachment "upstream-0001-net-add-recursion-limit-to-GRO.patch" of type "text/plain" (8015 bytes)
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