Denial of service in Linux Kernel

1) Memory leak

EUVDB-ID: #VU10927

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: CVE-2018-7757

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

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

The weakness exists in the drivers/scsi/libsas/sas_expander.c source code in the sas_smp_get_phy_events function due to memory leak. A local attacker can trigger memory corruption and cause the system to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 2.4.13 - 4.15.7

External links

http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4a491b1ab11ca0556d2fda...

Q & A

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.