Vulnerability identifier: #VU9603
Vulnerability risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-476
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists due to NULL pointer dereference in the kvm_vm_ioctl_check_extension function in arch/powerpc/kvm/powerpc.c in the Linux kernel. A local attacker can make a KVM_CHECK_EXTENSION KVM_CAP_PPC_HTM ioctl call to /dev/kvm and cause the service to crash.
Successful exploitation of the vulnerability results in denial of service.
Mitigation
Update to version 4.13.11.
Vulnerable software versions
Linux kernel: 4.13 - 4.13.10, 4.12 - 4.12.14, 4.11 - 4.11.12, 4.4.11, 4.10.0 - 4.10.17
External links
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ac64115a66c18c01745bbd...
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.