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| author | Jan H. Schönherr <jschoenh@amazon.de> | 2017-09-07 19:02:30 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-05 09:41:46 +0200 |
| commit | 7520be6a454c28955e711fdb49c81519bc537b39 (patch) | |
| tree | 581a237da41b9eff61195af4457897e75ea953b1 /include/linux/timerqueue.h | |
| parent | e726c30c758b155e0295dc49fdf26cfb8f0d4806 (diff) | |
KVM: VMX: Do not BUG() on out-of-bounds guest IRQ
commit 3a8b0677fc6180a467e26cc32ce6b0c09a32f9bb upstream.
The value of the guest_irq argument to vmx_update_pi_irte() is
ultimately coming from a KVM_IRQFD API call. Do not BUG() in
vmx_update_pi_irte() if the value is out-of bounds. (Especially,
since KVM as a whole seems to hang after that.)
Instead, print a message only once if we find that we don't have a
route for a certain IRQ (which can be out-of-bounds or within the
array).
This fixes CVE-2017-1000252.
Fixes: efc644048ecde54 ("KVM: x86: Update IRTE for posted-interrupts")
Signed-off-by: Jan H. Schönherr <jschoenh@amazon.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/timerqueue.h')
0 files changed, 0 insertions, 0 deletions