Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a to < d832a0587528853d45481d1faf75d4b5d062adafaffected8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a to < 1e4795766719ffd74b8cf0f2fde4a1350f8326bfaffected8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a to < a6d89032e5c6620d5bb44582a72555ce07bf1c2eaffected8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a to < 650d370cfbc66a96dd14d517bd704689b5bda4e5affected967faa26f313a62e7bebc55d5b8122eaee43b929affected6.11.6 to < 6.12affected
Linux Linux
Default version status: affected
6.12affected0 to < 6.12unaffected6.12.109 to ≤ 6.12.*unaffected6.18.50 to ≤ 6.18.*unaffected7.2.4 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected