Denial of service in Linux kernel usb-audio
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-47211 |
| CWE-ID | CWE-476 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Linux kernel Operating systems & Components / Operating system |
| Vendor | Linux Foundation |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) NULL pointer dereference
EUVDB-ID: #VU89394
Risk: Low
CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-47211
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within the snd_usb_set_sample_rate_v2v3() function in sound/usb/clock.c. A local user can perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsLinux kernel: All versions
External linkshttp://git.kernel.org/stable/c/58fa50de595f152900594c28ec9915c169643739
http://git.kernel.org/stable/c/b97053df0f04747c3c1e021ecbe99db675342954
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
