CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 7.1. It affects Linux.
CVE
CVE-2021-46952
Severity
HIGH
CVSS
7.1
EPSS
0.28%
Linux
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds Fix shift out-of-bounds in xprt_calc_majortimeo(). This is caused by a garbage timeout (retrans) mount option being passed to nfs mount, in this case from syzkaller. If the protocol is XPRT_TRANSPORT_UDP, then 'retrans' is a shift value for a 64-bit long integer, so 'retrans' cannot be >= 64. If it is >= 64, fail the mount and return an error.
Related CVEs
Other vulnerabilities affecting the same vendor(s)