Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ixgbevf: add missing negotiate_features op to Hyper-V ops table Commit a7075f501bd3 ("ixgbevf: fix mailbox API compatibility by negotiating supported features") added the .negotiate_features callback to ixgbe_mac_operations and populated it in ixgbevf_mac_ops, but forgot to add it to ixgbevf_hv_mac_ops. This leaves the function pointer NULL on Hyper-V VMs. During probe, ixgbevf_negotiate_api() calls ixgbevf_set_features(), which unconditionally dereferences hw->mac.ops.negotiate_features(). On Hyper-V this results in a NULL pointer dereference: BUG: kernel NULL pointer dereference, address: 0000000000000000 [...] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine [...] Workqueue: events work_for_cpu_fn RIP: 0010:0x0 [...] Call Trace: ixgbevf_negotiate_api+0x66/0x160 [ixgbevf] ixgbevf_sw_init+0xe4/0x1f0 [ixgbevf] ixgbevf_probe+0x20f/0x4a0 [ixgbevf] local_pci_probe+0x50/0xa0 work_for_cpu_fn+0x1a/0x30 [...] Add ixgbevf_hv_negotiate_features_vf() that returns -EOPNOTSUPP and wire it into ixgbevf_hv_mac_ops. The caller already handles -EOPNOTSUPP gracefully.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 871ac1cd4ce4804defcb428cbb003fd84c415ff4 before 376d74ea03589914fbe2dedcbebf418396c04fd0; affected 2e0aab9ddaf1428602c78f12064cd1e6ffcc4d18 before d8a747057a17ffc79e31df1abb11d05e1669d8e5; affected bf580112ed61736c2645a893413a04732505d4b1 before 2270ebab53128fb73c4a70a292be09094074737f; affected a7075f501bd33c93570af759b6f4302ef0175168 before 4db7b61ec1d1b2b67c0881b62fc4f9583bc21484; affected a7075f501bd33c93570af759b6f4302ef0175168 before 1455ff8809843e6e83f1f5b5c0bcc2224c99a3cb; affected a7075f501bd33c93570af759b6f4302ef0175168 before 4821d563cd7f251ae728be1a6d04af82a294a5b9; affected a376e29b1b196dc90b50df7e5e3947e3026300c4; affected 6.1.158 before 6.1.175; affected 6.6.114 before 6.6.136; affected 6.12.55 before 6.12.83; affected 6.17.5 before 6.18 |
| Linux / Linux | affected 6.18; unaffected 0 before 6.18; unaffected 6.1.175 through 6.1.*; unaffected 6.6.136 through 6.6.*; unaffected 6.12.83 through 6.12.*; unaffected 6.18.24 through 6.18.*; unaffected 6.19.14 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/376d74ea03589914fbe2dedcbebf418396c04fd0
- https://git.kernel.org/stable/c/d8a747057a17ffc79e31df1abb11d05e1669d8e5
- https://git.kernel.org/stable/c/2270ebab53128fb73c4a70a292be09094074737f
- https://git.kernel.org/stable/c/4db7b61ec1d1b2b67c0881b62fc4f9583bc21484
- https://git.kernel.org/stable/c/1455ff8809843e6e83f1f5b5c0bcc2224c99a3cb
- https://git.kernel.org/stable/c/4821d563cd7f251ae728be1a6d04af82a294a5b9
ADP enrichment
No English description supplied.