diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2021-05-05 23:48:17 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-05-07 06:06:21 -0400 |
| commit | 594b27e677b35f9734b1969d175ebc6146741109 (patch) | |
| tree | f0b0ad44c7862f370926d9ddfa8358ca8c3f6873 /sound | |
| parent | 03ca4589fabcc66b27e4cb8f8e95d64cf43badd0 (diff) | |
KVM: x86: Cancel pvclock_gtod_work on module removal
Nothing prevents the following:
pvclock_gtod_notify()
queue_work(system_long_wq, &pvclock_gtod_work);
...
remove_module(kvm);
...
work_queue_run()
pvclock_gtod_work() <- UAF
Ditto for any other operation on that workqueue list head which touches
pvclock_gtod_work after module removal.
Cancel the work in kvm_arch_exit() to prevent that.
Fixes: 16e8d74d2da9 ("KVM: x86: notifier for clocksource changes")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Message-Id: <87czu4onry.ffs@nanos.tec.linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'sound')
0 files changed, 0 insertions, 0 deletions