CVE-2021-37159

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.

Category

6.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.03%
Third-Party Advisory debian.org Third-Party Advisory debian.org Third-Party Advisory netapp.com Third-Party Advisory oracle.com Third-Party Advisory spinics.net
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.spinics.net/lists/linux-usb/msg202228.html mailing list third party advisory patch
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html third party advisory mailing list
https://www.oracle.com/security-alerts/cpujul2022.html third party advisory patch
https://security.netapp.com/advisory/ntap-20210819-0003/ third party advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a6ecfb39ba9d7316057cea823b196b734f6b18ca
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dcb713d53e2eadf42b878c12a471e74dc6ed3145
https://bugzilla.suse.com/show_bug.cgi?id=1188601

Frequently Asked Questions

What is the severity of CVE-2021-37159?
CVE-2021-37159 has been scored as a medium severity vulnerability.
How to fix CVE-2021-37159?
To fix CVE-2021-37159, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-37159 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-37159 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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