Vulnerability Details : CVE-2021-37159
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.
Vulnerability category: Memory Corruption
Exploit prediction scoring system (EPSS) score for CVE-2021-37159
Probability of exploitation activity in the next 30 days: 0.08%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 31 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-37159
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
4.4
|
MEDIUM | AV:L/AC:M/Au:N/C:P/I:P/A:P |
3.4
|
6.4
|
[email protected] |
|
6.4
|
MEDIUM | CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
0.5
|
5.9
|
[email protected] |
CWE ids for CVE-2021-37159
-
The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.Assigned by: [email protected] (Primary)
-
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.Assigned by: [email protected] (Primary)
References for CVE-2021-37159
-
https://security.netapp.com/advisory/ntap-20210819-0003/
Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
Mailing List;Third Party Advisory
-
https://www.spinics.net/lists/linux-usb/msg202228.html
Mailing List;Patch;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
Mailing List;Third Party Advisory
-
https://www.oracle.com/security-alerts/cpujul2022.html
Patch;Third Party Advisory
Products affected by CVE-2021-37159
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1:*:*:*:*:*:*:*