CVE-2022-49418
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
NFSv4: Fix free of uninitialized nfs4_label on referral lookup.
Send along the already-allocated fattr along with nfs4_fs_locations, and drop the memcpy of fattr. We end up growing two more allocations, but this fixes up a crash as:
PID: 790 TASK: ffff88811b43c000 CPU: 0 COMMAND: "ls" #0 [ffffc90000857920] panic at ffffffff81b9bfde #1 [ffffc900008579c0] do_trap at ffffffff81023a9b #2 [ffffc90000857a10] do_error_trap at ffffffff81023b78 #3 [ffffc90000857a58] exc_stack_segment at ffffffff81be1f45 #4 [ffffc90000857a80] asm_exc_stack_segment at ffffffff81c009de #5 [ffffc90000857b08] nfs_lookup at ffffffffa0302322 [nfs] #6 [ffffc90000857b70] __lookup_slow at ffffffff813a4a5f #7 [ffffc90000857c60] walk_component at ffffffff813a86c4 #8 [ffffc90000857cb8] path_lookupat at ffffffff813a9553 #9 [ffffc90000857cf0] filename_lookup at ffffffff813ab86b
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 9558a007dbc383d48e7f5a123d0b5ff656c71068 < 6015292653d95ba9f72906e2b65e536aa5807d64 | affected |
| Linux | Linux | 9558a007dbc383d48e7f5a123d0b5ff656c71068 < c3ed222745d9ad7b69299b349a64ba533c64a34f | affected |
| Linux | Linux | 5.16 | affected |
| Linux | Linux | 0 < 5.16 | unaffected |
| Linux | Linux | 5.18.3 <= 5.18.* | unaffected |
| Linux | Linux | 5.19 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/6015292653d95ba9f72906e2b65e536aa5807d64
- https://git.kernel.org/stable/c/c3ed222745d9ad7b69299b349a64ba533c64a34f
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.