Description

drivers/vfio/pci/vfio_pci.c in the Linux kernel through 4.8.11 allows local users to bypass integer overflow checks, and cause a denial of service (memory corruption) or have unspecified other impact, by leveraging access to a vfio PCI device file for a VFIO_DEVICE_SET_IRQS ioctl call, aka a "state machine confusion bug."

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=05692d7005a364add85c6e25a6c4447ce08f913a

http://rhn.redhat.com/errata/RHSA-2017-0386.html

http://rhn.redhat.com/errata/RHSA-2017-0387.html

http://www.openwall.com/lists/oss-security/2016/10/26/11

http://www.securityfocus.com/bid/93929

https://bugzilla.redhat.com/show_bug.cgi?id=1389258

https://github.com/torvalds/linux/commit/05692d7005a364add85c6e25a6c4447ce08f913a

https://patchwork.kernel.org/patch/9373631/

Details

Risk Information

CVSS v2

CVSS v3