Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: nfsd: Fix nsfd startup race (again) Commit bd5ae9288d64 ("nfsd: register pernet ops last, unregister first") has re-opened rpc_pipefs_event() race against nfsd_net_id registration (register_pernet_subsys()) which has been fixed by commit bb7ffbf29e76 ("nfsd: fix nsfd startup race triggering BUG_ON"). Restore the order of register_pernet_subsys() vs register_cld_notifier(). Add WARN_ON() to prevent a future regression. Crash info: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000012 CPU: 8 PID: 345 Comm: mount Not tainted 5.4.144-... #1 pc : rpc_pipefs_event+0x54/0x120 [nfsd] lr : rpc_pipefs_event+0x48/0x120 [nfsd] Call trace: rpc_pipefs_event+0x54/0x120 [nfsd] blocking_notifier_call_chain rpc_fill_super get_tree_keyed rpc_fs_get_tree vfs_get_tree do_mount ksys_mount __arm64_sys_mount el0_svc_handler el0_svc
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 8677e99150b0830d29cc1318b4cc559e176940bb before f5734b1714ca355703e9ea8fb61d04beff1790b9; affected 7c7cb07d4affcf41749234fe9dc4d90cd3959e32 before c520943a00ad5015704969ad3304c956bcd49d25; affected bd5ae9288d6451bd346a1b4a59d4fe7e62ba29b7 before 8bf902fee5893cfc2f04a698abab47629699ae9a; affected bd5ae9288d6451bd346a1b4a59d4fe7e62ba29b7 before b10252c7ae9c9d7c90552f88b544a44ee773af64; affected 4d41f65efeec0a6da6088341203c81e49ebfcd90; affected 5.4.102 before 5.4.165; affected 5.10.20 before 5.10.85; affected 5.11.3 before 5.12 |
| Linux / Linux | affected 5.12; unaffected 0 before 5.12; unaffected 5.4.165 through 5.4.*; unaffected 5.10.85 through 5.10.*; unaffected 5.15.8 through 5.15.*; unaffected 5.16 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/f5734b1714ca355703e9ea8fb61d04beff1790b9
- https://git.kernel.org/stable/c/c520943a00ad5015704969ad3304c956bcd49d25
- https://git.kernel.org/stable/c/8bf902fee5893cfc2f04a698abab47629699ae9a
- https://git.kernel.org/stable/c/b10252c7ae9c9d7c90552f88b544a44ee773af64
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.