Vulnerability identifier: #VU21338
Vulnerability risk: Low
CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-125
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 perform denial of service (DoS) attack.
The vulnerability exists due to a boundary condition in drivers/net/mlx4/port.c when searching for a free entry in either mlx4_register_vlan() or mlx4_register_mac(), and there is no free entry. The loop terminates without updating the local variable free thus causing out of array bounds access. A local user can perform denial of service attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Linux kernel: 2.6.0 - 2.6.36.4
External links
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0926f91083f34d047abc74f1ca4fa6a9c161f7db
http://github.com/torvalds/linux/commit/0926f91083f34d047abc74f1ca4fa6a9c161f7db
http://mirrors.edge.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.37
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.