SB2019121123 - Red Hat update for kernel
Published: December 11, 2019
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2019-5489)
The vulnerability allows a local attacker to gain access to potentially sensitive information.
The vulnerability exists due to a flaw in the mincore() implementation in mm/mincore.c. A local attacker can observe page cache access patterns of other processes on the same system and sniff secret information.
2) Security restrictions bypass (CVE-ID: CVE-2018-13405)
The vulnerability allows a local attacker to create arbitrary files on the target system.
The vulnerability exists due to the inode_init_owner function, as defined in the fs/inode.c source code file, allows the creation of arbitrary files in set-group identification (SGID) directories. A local attacker can create arbitrary files with unintended group ownership.
3) Type Confusion (CVE-ID: CVE-2018-9568)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a type confusion error in the sk_clone_lock() function in sock.c. A local user can run a specially crafted application to trigger memory corruption and execute arbitrary code on the target system with elevated privileges.
Remediation
Install update from vendor's website.