CVE-2024-50094 (GCVE-0-2024-50094)
Vulnerability from cvelistv5
Published
2024-11-05 17:04
Modified
2026-05-11 20:45
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 401cb7dae8130fd34eb84648e02ab4c506df7d5e
Version: 401cb7dae8130fd34eb84648e02ab4c506df7d5e
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