CVE-2024-50094

MEDIUM EPSS 9.9%
Published Nov 5, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Nov 5, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
9.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥6.11  –  <6.11.4
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any

References 2

  • git.kernel.org https://git.kernel.org/stable/c/55e802468e1d38dec8e25a2fdb6078d45b647e8c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/65d4fc76d75c136744e67754d20feda609e7b793
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/55e802468e1d38dec8e25a2fdb6078d45b647e8c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/65d4fc76d75c136744e67754d20feda609e7b793
    Patch