Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: nfsd: set SC_STATUS_FREED in nfsd4_drop_revoked_stid for delegations nfsd4_drop_revoked_stid() handles FREE_STATEID for admin-revoked delegations but does not set SC_STATUS_FREED before releasing cl_lock. revoke_delegation() uses this flag to detect whether FREE_STATEID has already processed the delegation -- without it, the freed delegation is added to cl_revoked via list_add(), producing a use-after-free when cl_revoked is later traversed in __destroy_client(). The SC_STATUS_REVOKED path in nfsd4_free_stateid() (line 7983) already sets SC_STATUS_FREED correctly. Apply the same pattern to the SC_STATUS_ADMIN_REVOKED path in nfsd4_drop_revoked_stid().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a before d832a0587528853d45481d1faf75d4b5d062adaf; affected 8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a before 1e4795766719ffd74b8cf0f2fde4a1350f8326bf; affected 8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a before a6d89032e5c6620d5bb44582a72555ce07bf1c2e; affected 8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a before 650d370cfbc66a96dd14d517bd704689b5bda4e5; affected 967faa26f313a62e7bebc55d5b8122eaee43b929; affected 6.11.6 before 6.12 |
| Linux / Linux | affected 6.12; unaffected 0 before 6.12; unaffected 6.12.109 through 6.12.*; unaffected 6.18.50 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.