Date: Thu, 17 Feb 2011 15:13:49 +0800 From: Eugene Teo <eugene@...hat.com> To: oss-security@...ts.openwall.com CC: "Steven M. Christey" <coley@...us.mitre.org> Subject: CVE request - kernel: thp: prevent hugepages during args/env copying into the user stack "Transparent hugepages can only be created if rmap is fully functional. A specially crafted binary could allow the user stack to grow huge and backed by hugepages without this patch while is_vma_temporary_stack() is true. This also optmizes away some harmless but unnecessary setting of khugepaged_scan.address and it switches some BUG_ON to VM_BUG_ON." mm/huge_memory.c - introduced in 71e3aac0 (v2.6.38-rc1) https://bugzilla.redhat.com/show_bug.cgi?id=678209 http://git.kernel.org/linus/a7d6e4ecdb7648478ddec76d30d87d03d6e22b31 Thanks, Eugene
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