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| author | Steve Rutherford <[email protected]> | 2017-01-12 02:28:29 +0000 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2017-01-12 13:34:58 +0000 |
| commit | 129a72a0d3c8e139a04512325384fe5ac119e74d (patch) | |
| tree | 56a0adfdeff6c007ba3a5f36577036f20e7d5150 /lib/timerqueue.c | |
| parent | KVM: x86: flush pending lapic jump label updates on module unload (diff) | |
| download | kernel-129a72a0d3c8e139a04512325384fe5ac119e74d.tar.gz kernel-129a72a0d3c8e139a04512325384fe5ac119e74d.zip | |
KVM: x86: Introduce segmented_write_std
Introduces segemented_write_std.
Switches from emulated reads/writes to standard read/writes in fxsave,
fxrstor, sgdt, and sidt. This fixes CVE-2017-2584, a longstanding
kernel memory leak.
Since commit 283c95d0e389 ("KVM: x86: emulate FXSAVE and FXRSTOR",
2016-11-09), which is luckily not yet in any final release, this would
also be an exploitable kernel memory *write*!
Reported-by: Dmitry Vyukov <[email protected]>
Cc: [email protected]
Fixes: 96051572c819194c37a8367624b285be10297eca
Fixes: 283c95d0e3891b64087706b344a4b545d04a6e62
Suggested-by: Paolo Bonzini <[email protected]>
Signed-off-by: Steve Rutherford <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'lib/timerqueue.c')
0 files changed, 0 insertions, 0 deletions