Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d505e66191072748620fc0af038cea4e4da0e3cd before e79057d15d96ef19de4de6d7e479bae3d58a2a8d; affected 20798dfe249a01ad1b12eec7dbc572db5003244a before 650e6f383a6eb40f7c0a010982a74ab4b6893870; affected 20798dfe249a01ad1b12eec7dbc572db5003244a before ab1016d39cc052064e32f25ad18ef8767a0ee3b8 |
| Linux / Linux | affected 5.13; unaffected 0 before 5.13; unaffected 5.13.4 through 5.13.*; unaffected 5.14 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/e79057d15d96ef19de4de6d7e479bae3d58a2a8d
- https://git.kernel.org/stable/c/650e6f383a6eb40f7c0a010982a74ab4b6893870
- https://git.kernel.org/stable/c/ab1016d39cc052064e32f25ad18ef8767a0ee3b8
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.
No English description supplied.