SB2021060229 - Denial of service in Linux kernel NFS client
Published: June 2, 2021 Updated: June 2, 2022
Security Bulletin ID
SB2021060229
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2020-10742)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an index buffer overflow during Direct IO write in NFS client. A local user can force the client to reach out of the index after one memory allocation by kmalloc and cause a kernel panic.
Remediation
Install update from vendor's website.