Bug#733551: Sanitation of CPU-state when switching from virtual-8086 mode to other task
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This issue was assigned CVE-2014-1438 and has now been fixed in kernel
mainline. Since analysis showed, that it is not specific to vm86-mode,
new bug description could be similar to OSVDB: "restore_fpu_checking
Function Unhandled FPU Exception Local DoS"
See [1] for patch, [2] for information about CVE-assignment,
at [3] you can find references to various resources related to this
bug, e.g. the mailing list posts, POC code for crash and privilege
escalation.
[1] https://lkml.org/lkml/2014/1/11/196
[2] http://www.openwall.com/lists/oss-security/2014/01/14/1
[3] http://www.halfdog.net/Security/2013/Vm86SyscallTaskSwitchKernelPanic/
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http://www.halfdog.net/
PGP: 156A AE98 B91F 0114 FE88 2BD8 C459 9386 feed a bee
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