Integer overflow in Linux kernel - CVE-2018-5848

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Main Vulnerability Database Vulnerabilities #VU13563

Integer overflow in Linux kernel - CVE-2018-5848

Published: July 4, 2018


Vulnerability identifier: #VU13563
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-5848
CWE-ID: CWE-190
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists In the function wmi_set_ie() due to the length validation code does not handle unsigned integer overflow properly. A local attacker can supply a large value of the 'ie_len' argument, trigger memory corruption and gain root privileges.

Affected software

Linux kernel
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for IBM System z (Structure A)
SUSE Linux
Opensuse
kernel-alt (Red Hat package)

How to mitigate CVE-2018-5848

Install update from vendor's website.

kernel-alt (Red Hat package) - update to 4.14.0-115.el7a

External References

Related Security Bulletins