ixgbevf: add missing negotiate_features op to Hyper-V ops table
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.1.175, 6.6.136, 6.12.83, 6.18, 6.18.24, and 1 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 871ac1cd4ce4804defcb428cbb003fd84c415ff4 · fixed in 376d74ea03589914fbe2dedcbebf418396c04fd0; From 2e0aab9ddaf1428602c78f12064cd1e6ffcc4d18 · fixed in d8a747057a17ffc79e31df1abb11d05e1669d8e5; From bf580112ed61736c2645a893413a04732505d4b1 · fixed in 2270ebab53128fb73c4a70a292be09094074737f; From a7075f501bd33c93570af759b6f4302ef0175168 · fixed in 4db7b61ec1d1b2b67c0881b62fc4f9583bc21484; From a7075f501bd33c93570af759b6f4302ef0175168 · fixed in 1455ff8809843e6e83f1f5b5c0bcc2224c99a3cb; From a7075f501bd33c93570af759b6f4302ef0175168 · fixed in 4821d563cd7f251ae728be1a6d04af82a294a5b9; From 6.1.158 · fixed in 6.1.175; From 6.6.114 · fixed in 6.6.136; From 6.12.55 · fixed in 6.12.83; From 6.17.5 · fixed in 6.18
- Linux Linux
6.18
- KernelLinux
fixed in 6.1.175; From 6.2.0 · fixed in 6.6.136; From 6.7.0 · fixed in 6.12.83; From 6.13.0 · fixed in 6.18.24; From 6.18.0 · fixed in 6.19.14