CVE-2024-50094
sfc: Don't invoke xdp_do_flush() from netpoll.
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: sfc: Don't invoke xdp_do_flush() from netpoll. Yury reported a crash in the sfc driver originated from netpoll_send_udp(). The netconsole sends a message and then netpoll invokes the driver's NAPI function with a budget of zero. It is dedicated to allow driver to free TX resources, that it may have used while sending the packet. In the netpoll case the driver invokes xdp_do_flush() unconditionally, leading to crash because bpf_net_context was never assigned. Invoke xdp_do_flush() only if budget is not zero.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Nov 5, 2024 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
401cb7dae8130fd34eb84648e02ab4c506df7d5e < 65d4fc76d75c136744e67754d20feda609e7b793 401cb7dae8130fd34eb84648e02ab4c506df7d5e < 55e802468e1d38dec8e25a2fdb6078d45b647e8c
Linux / Linux
6.11