Vulnerability identifier: #VU6653
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-416
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 race condition in net/packet/af_packet.c. A local attacker can use a multithreaded application, make PACKET_FANOUT setsockopt system calls, trigger use-after-free error and cause the system to crash.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Linux kernel: 4.9 - 4.9.12, 3.4.9
External links
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d199fab63c11998a602205f7ee...
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.