SB2020060972 - Privilege escalation in Linux kernel
Published: June 9, 2020 Updated: July 15, 2020
Security Bulletin ID
SB2020060972
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Privilege Management (CVE-ID: CVE-2020-10757)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists in the Linux Kernel in versions after 4.5-rc1 in the way mremap handled DAX Huge Pages. This flaw allows a local attacker with access to a DAX enabled storage to escalate their privileges on the system.
Remediation
Install update from vendor's website.
References
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1842525
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5bfea2d9b17f1034a68147a8b03b9789af5700f9
- https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IEM47BXZJLODRH5YNNZSAQ2NVM63MYMC/
- https://security.netapp.com/advisory/ntap-20200702-0004/
- https://www.debian.org/security/2020/dsa-4698
- https://www.debian.org/security/2020/dsa-4699
- https://www.openwall.com/lists/oss-security/2020/06/04/4