Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: netfs: Fix kernel BUG in netfs_limit_iter() for ITER_KVEC iterators When a process crashes and the kernel writes a core dump to a 9P filesystem, __kernel_write() creates an ITER_KVEC iterator. This iterator reaches netfs_limit_iter() via netfs_unbuffered_write(), which only handles ITER_FOLIOQ, ITER_BVEC and ITER_XARRAY iterator types, hitting the BUG() for any other type. Fix this by adding netfs_limit_kvec() following the same pattern as netfs_limit_bvec(), since both kvec and bvec are simple segment arrays with pointer and length fields. Dispatch it from netfs_limit_iter() when the iterator type is ITER_KVEC.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected cae932d3aee55035a54415dcea8e7ecf2ec469b5 before 18c2e20b42dd21db599e42d05ddaeeb647b2bb6d; affected cae932d3aee55035a54415dcea8e7ecf2ec469b5 before 4bc2d72c7695cedf6d4e1a558924903c2b28a78e; affected cae932d3aee55035a54415dcea8e7ecf2ec469b5 before 00d6df7115f6972370974212de9088087820802e; affected cae932d3aee55035a54415dcea8e7ecf2ec469b5 before 67e467a11f62ff64ad219dc6aa5459e132c79d14 |
| Linux / Linux | affected 6.8; unaffected 0 before 6.8; unaffected 6.12.80 through 6.12.*; unaffected 6.18.21 through 6.18.*; unaffected 6.19.11 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.