CVE-2024-26820

MEDIUM
Published Apr 17, 2024 Modified May 12, 2026

Description

In the Linux kernel, the following vulnerability has been resolved: hv_netvsc: Register VF in netvsc_probe if NET_DEVICE_REGISTER missed If hv_netvsc driver is unloaded and reloaded, the NET_DEVICE_REGISTER handler cannot perform VF register successfully as the register call is received before netvsc_probe is finished. This is because we register register_netdevice_notifier() very early( even before vmbus_driver_register()). To fix this, we try to register each such matching VF( if it is visible as a netdevice) at the end of netvsc_probe.

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CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
debian debian_linux

References

Advisories & Patches

https://git.kernel.org/stable/c/309ef7de5d840e17607e7d65cbf297c0564433ef https://git.kernel.org/stable/c/4d29a58d96a78728cb01ee29ed70dc4bd642f135 https://git.kernel.org/stable/c/5b10a88f64c0315cfdef45de0aaaa4eef57de0b7 https://git.kernel.org/stable/c/9cae43da9867412f8bd09aee5c8a8dc5e8dc3dc2 https://git.kernel.org/stable/c/a71302c8638939c45e4ba5a99ea438185fd3f418 https://git.kernel.org/stable/c/b6d46f306b3964d05055ddaa96b58cd8bd3a472c https://git.kernel.org/stable/c/bcb7164258d0a9a8aa2e73ddccc2d78f67d2519d https://git.kernel.org/stable/c/c7441c77c91e47f653104be8353b44a3366a5366 https://git.kernel.org/stable/c/309ef7de5d840e17607e7d65cbf297c0564433ef https://git.kernel.org/stable/c/4d29a58d96a78728cb01ee29ed70dc4bd642f135 https://git.kernel.org/stable/c/5b10a88f64c0315cfdef45de0aaaa4eef57de0b7 https://git.kernel.org/stable/c/9cae43da9867412f8bd09aee5c8a8dc5e8dc3dc2 https://git.kernel.org/stable/c/a71302c8638939c45e4ba5a99ea438185fd3f418 https://git.kernel.org/stable/c/b6d46f306b3964d05055ddaa96b58cd8bd3a472c https://git.kernel.org/stable/c/bcb7164258d0a9a8aa2e73ddccc2d78f67d2519d https://git.kernel.org/stable/c/c7441c77c91e47f653104be8353b44a3366a5366

Frequently Asked Questions

What is CVE-2024-26820? +
In the Linux kernel, the following vulnerability has been resolved: hv_netvsc: Register VF in netvsc_probe if NET_DEVICE_REGISTER missed If hv_netvsc driver is unloaded and reloaded, the NET_DEVICE_REGISTER handler cannot perform VF register successfully as the register call is received before netvsc_probe is finished. This is because we register register_netdevice_notifier() very early( even before vmbus_driver_register()). To fix this, we try to register each such matching VF( if it is visible as a netdevice) at the end of netvsc_probe. It has a CVSS v3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2024-26820? +
CVE-2024-26820 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2024-26820? +
CVE-2024-26820 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-26820? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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