CVE-2022-2153
Medium
Description
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedAug 31, 2022
First seenAug 31, 2022
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- linux linux_kernel5.18 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 5.18 | 5.18 |
| fedoraproject fedora | 36 | — |
| redhat enterprise_linux | 6.0, 7.0, 8.0, 9.0 | — |
| debian debian_linux | 10.0 | — |
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