SB2024050844 - Out-of-bounds read in Linux kernel NFS support
Published: May 8, 2024
Security Bulletin ID
SB2024050844
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2021-46952)
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to a boundary condition within the nfs23_parse_monolithic() function in fs/nfs/fs_context.c when handling UDP retrans. A remote attacker can trigger an out-of-bounds read error and gain access to sensitive information or perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.