Information disclosure in Linux kernel - CVE-2018-6412

Vulnerability identifier: #VU13041

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-6412

CWE-ID: CWE-200

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists due to integer signedness error in the sbusfb_ioctl_helper function in drivers/video/fbdev/sbuslib.c. A remote attacker can use vector related to the FBIOPUTCMAP_SPARC and FBIOGETCMAP_SPARC commands to access arbitrary data.

Linux kernel

The vulnerability is addressed in the following versions: 4.4.134, 4.9.104, 4.14.45.

• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.134
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.104
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.45

• Information disclosure in Linux kernel