Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 5.13.4 |
| Debian | Debian Linux | 9.0 |
| 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 |
Related Weaknesses (CWE)
References
- https://bugzilla.suse.com/show_bug.cgi?id=1188601
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a6ecf
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dcb71
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20210819-0003/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlPatchThird Party Advisory
- https://www.spinics.net/lists/linux-usb/msg202228.htmlMailing ListPatchThird Party Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1188601
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a6ecf
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dcb71
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20210819-0003/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlPatchThird Party Advisory
FAQ
What is CVE-2021-37159?
CVE-2021-37159 is a vulnerability with a CVSS score of 6.4 (MEDIUM). 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.
How severe is CVE-2021-37159?
CVE-2021-37159 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-37159?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux, Oracle Communications Cloud Native Core Binding Support Function, Oracle Communications Cloud Native Core Network Exposure Function, Oracle Communications Cloud Native Core Policy.