Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid() The pynfs DELEG8 test fails when run against nfsd. It acquires a delegation and then lets the lease time out. It then tries to use the deleg stateid and expects to see NFS4ERR_DELEG_REVOKED, but it gets bad NFS4ERR_BAD_STATEID instead. When a delegation is revoked, it's initially marked with SC_STATUS_REVOKED, or SC_STATUS_ADMIN_REVOKED and later, it's marked with the SC_STATUS_FREEABLE flag, which denotes that it is waiting for s FREE_STATEID call. nfs4_lookup_stateid() accepts a statusmask that includes the status flags that a found stateid is allowed to have. Currently, that mask never includes SC_STATUS_FREEABLE, which means that revoked delegations are (almost) never found. Add SC_STATUS_FREEABLE to the always-allowed status flags, and remove it from nfsd4_delegreturn() since it's now always implied.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a before 52e209203c35a4fbff8af23cd3613efe5df40102; affected 8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a before dc6f3295905d7185e71091870119a8c11c3808cc; affected 8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a before 5bcb44e650bc4ec7eac23df90c5e011a77fa2beb; affected 8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a before d1bc15b147d35b4cb7ca99a9a7d79d41ca342c13; affected 967faa26f313a62e7bebc55d5b8122eaee43b929; affected 6.11.6 before 6.12 |
| Linux / Linux | affected 6.12; unaffected 0 before 6.12; unaffected 6.12.23 through 6.12.*; unaffected 6.13.11 through 6.13.*; unaffected 6.14.2 through 6.14.*; unaffected 6.15 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/52e209203c35a4fbff8af23cd3613efe5df40102
- https://git.kernel.org/stable/c/dc6f3295905d7185e71091870119a8c11c3808cc
- https://git.kernel.org/stable/c/5bcb44e650bc4ec7eac23df90c5e011a77fa2beb
- https://git.kernel.org/stable/c/d1bc15b147d35b4cb7ca99a9a7d79d41ca342c13
ADP enrichment
No English description supplied.
No references supplied.