CyberRota Analysis
This is a medium severity vulnerability with a CVSS score of 5.5. It affects Linux.
CVE
CVE-2021-47316
Severity
MEDIUM
CVSS
5.5
EPSS
0.24%
Linux
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: nfsd: fix NULL dereference in nfs3svc_encode_getaclres In error cases the dentry may be NULL. Before 20798dfe249a, the encoder also checked dentry and d_really_is_positive(dentry), but that looks like overkill to me--zero status should be enough to guarantee a positive dentry. This isn't the first time we've seen an error-case NULL dereference hidden in the initialization of a local variable in an xdr encoder. But I went back through the other recent rewrites and didn't spot any similar bugs.
Related CVEs
Other vulnerabilities affecting the same vendor(s)