Denial of service in Linux Kernel

1) Improper input validation

EUVDB-ID: #VU10925

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-1000026

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to cause DoS condition on the target system.

The weakness exists in the bnx2x network card driver due to insufficient validation of user-supplied input. A remote attacker can submit a specially crafted packet to the affected network card and cause the system to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.4.96 - 4.15.7

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:4.4.96:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.8.17:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.158:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.15.7:*:*:*:*:*:*:*

External links

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8914a595110a6eca69a5e2...
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.159
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.102

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.