CVE-2021-37159

MEDIUM

Linux Kernel < 5.13.4 - Use-After-Free in hso_free_net_device

Title source: llm

Description

hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.

References (8)

Core 8

Core References

Mailing List, Third Party Advisory mailing-list

https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html

Mailing List, Third Party Advisory mailing-list

https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html

Issue Tracking

https://bugzilla.suse.com/show_bug.cgi?id=1188601

Third Party Advisory

https://security.netapp.com/advisory/ntap-20210819-0003/

Patch, Third Party Advisory

https://www.oracle.com/security-alerts/cpujul2022.html

Mailing List, Patch, Third Party Advisory

https://www.spinics.net/lists/linux-usb/msg202228.html

Patch

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a6ecfb39ba9d7316057cea823b196b734f6b18ca

Patch

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dcb713d53e2eadf42b878c12a471e74dc6ed3145

Scores

CVSS v3 6.4

EPSS 0.0003

EPSS Percentile 10.3%

Attack Vector PHYSICAL

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-415 CWE-416

Status published

Products (5)

debian/debian_linux 9.0

linux/linux_kernel < 5.13.4

oracle/communications_cloud_native_core_binding_support_function 22.1.3

oracle/communications_cloud_native_core_network_exposure_function 22.1.1

oracle/communications_cloud_native_core_policy 22.2.0

Published Jul 21, 2021

Tracked Since Feb 18, 2026