Resource management error in Linux kernel can



| Updated: 2025-05-13
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-47457
CWE-ID CWE-399
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Resource management error

EUVDB-ID: #VU93183

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-47457

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to resource management error within the isotp_sendmsg() function in net/can/isotp.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.10 - 5.15 rc7

CPE2.3 External links

https://git.kernel.org/stable/c/053bc12df0d6097c1126d0e14fa778a0a8faeb64
https://git.kernel.org/stable/c/a76abedd2be3926d6deba236a935c7f98abf9110
https://git.kernel.org/stable/c/9acf636215a6ce9362fe618e7da4913b8bfe84c8
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.76
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15


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.



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