Date: Mon, 18 Nov 2013 16:17:29 +0100 From: Petr Matousek <pmatouse@...hat.com> To: oss-security@...ts.openwall.com Cc: Kurt Seifried <kseifrie@...hat.com> Subject: CVE-2013-4592 -- Linux kernel: kvm: memory leak when memory slot is moved with assigned device When a user memory slot is moved (ie. the base_gfn changes), iommu pages are neither unpinned nor unmapped. The memory for these pages then cannot be recovered without rebooting the system. Local user with ability to assign device (with access to PCI sysfs files for a device) could use this flaw to DoS the system. Upstream fixes: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=12d6e7538e2d418c08f082b1b44ffa5fb7270ed8 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e40f193f5bb022e927a57a4f5d5194e4f12ddb74 References: https://bugzilla.redhat.com/show_bug.cgi?id=1031702 -- Petr Matousek / Red Hat Security Response Team PGP: 0xC44977CA 8107 AF16 A416 F9AF 18F3 D874 3E78 6F42 C449 77CA Content of type "application/pgp-signature" skipped
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