CVE-2022-49418

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> NFSv4: Fix free of uninitialized nfs4_label on referral lookup.<br /> <br /> Send along the already-allocated fattr along with nfs4_fs_locations, and<br /> drop the memcpy of fattr. We end up growing two more allocations, but this<br /> fixes up a crash as:<br /> <br /> PID: 790 TASK: ffff88811b43c000 CPU: 0 COMMAND: "ls"<br /> #0 [ffffc90000857920] panic at ffffffff81b9bfde<br /> #1 [ffffc900008579c0] do_trap at ffffffff81023a9b<br /> #2 [ffffc90000857a10] do_error_trap at ffffffff81023b78<br /> #3 [ffffc90000857a58] exc_stack_segment at ffffffff81be1f45<br /> #4 [ffffc90000857a80] asm_exc_stack_segment at ffffffff81c009de<br /> #5 [ffffc90000857b08] nfs_lookup at ffffffffa0302322 [nfs]<br /> #6 [ffffc90000857b70] __lookup_slow at ffffffff813a4a5f<br /> #7 [ffffc90000857c60] walk_component at ffffffff813a86c4<br /> #8 [ffffc90000857cb8] path_lookupat at ffffffff813a9553<br /> #9 [ffffc90000857cf0] filename_lookup at ffffffff813ab86b