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Medium 6.4Published Jul 21, 2021
CVE-2021-37159hso_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.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 6.4 MEDIUM (v3.1, NVD)CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mitre
- NVD analysis
- Modified
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | through 5.13.4 | NVD |
debian debian_linux debian:debian_linux | 9.0 | NVD |
oracle communications_cloud_native_core_binding_support_function oracle:communications_cloud_native_core_binding_support_function | 22.1.3 | NVD |
oracle communications_cloud_native_core_network_exposure_function oracle:communications_cloud_native_core_network_exposure_function | 22.1.1 | NVD |
oracle communications_cloud_native_core_policy oracle:communications_cloud_native_core_policy | 22.2.0 | NVD |
References
- https://www.spinics.net/lists/linux-usb/msg202228.html
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.htmlmailing-list
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlmailing-list
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://security.netapp.com/advisory/ntap-20210819-0003/
- 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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.