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Start learningUpgrade RHEL:9
kernel-rt-kvm
to version 0:5.14.0-162.6.1.rt21.168.el9_1 or higher.
This issue was patched in RHSA-2022:7933
.
Note: Versions mentioned in the description apply only to the upstream kernel-rt-kvm
package and not the kernel-rt-kvm
package as distributed by RHEL
.
See How to fix?
for RHEL:9
relevant fixed versions and status.
A flaw was found in the Linux kernel’s KVM when attempting to set a SynIC IRQ. This issue makes it possible for a misbehaving VMM to write to SYNIC/STIMER MSRs, causing a NULL pointer dereference. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.