# CVE-2024-50094: linux: In the Linux kernel, the following vulnerability has been resolved:  sfc: Don't invoke xdp_do_flush() from netpoll

CVE-2024-50094 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-50094, released November 5, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-50094
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0046
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 5, 2024

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.11.4-1 | [DEBIAN-CVE-2024-50094](https://patchblox.com/security/data/fix/linux/debian-cve-2024-50094.md) | Nov 5, 2024 |
| Linux | linux Debian 14 | 6.11.4-1 | [DEBIAN-CVE-2024-50094](https://patchblox.com/security/data/fix/linux/debian-cve-2024-50094.md) | Nov 5, 2024 |

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Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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