Vulnerability identifier: #VU5868
Vulnerability risk: Low
CVSSv3.1: 6.2 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-617
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local user to cause kernel panic.
The vulnerability exists due to a race condition in the sctp_wait_for_sndbuf() function in net/sctp/socket.c in the Linux kernel before 4.9.11. A local user can use userspace application to trigger a BUG_ON() system call if the socket tx buffer is full and cause kernel panic.
Successful exploitation of this vulnerability may result in denial of service condition.
Mitigation
Update to version 4.9.11.
Vulnerable software versions
Linux kernel: 4.9.1 - 4.9.10, 4.8.0 - 4.8.17, 4.7.0 - 4.7.10, 4.6.0 - 4.6.7, 4.5.0 - 4.5.7, 4.4.0 - 4.4.50, 4.3.1 - 4.3.6, 4.2.0 - 4.2.8, 4.1.1 - 4.1.38
External links
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.11
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.