#VU93588 Resource management error in Linux kernel - CVE-2021-47565

Vulnerability identifier: #VU93588

Vulnerability 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-2021-47565

CWE-ID: CWE-399

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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 _scsih_ublock_io_device() function in drivers/scsi/mpt3sas/mpt3sas_scsih.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/5d4d50b1f159a5ebab7617f47121b4370aa58afe
https://git.kernel.org/stable/c/58ef2c7a6de13721865d84b80eecf56d6cba0937
https://git.kernel.org/stable/c/dd035ca0e7a142870a970d46b1d19276cfe2bc8c
https://git.kernel.org/stable/c/0d4b29eaadc1f59cec0c7e85eae77d08fcca9824
https://git.kernel.org/stable/c/7e324f734a914957b8cc3ff4b4c9f0409558adb5
https://git.kernel.org/stable/c/2bf9c5a5039c8f4b037236aed505e6a25c1d5f7b
https://git.kernel.org/stable/c/8485649a7655e791a6e4e9f15b4d30fdae937184
https://git.kernel.org/stable/c/0ee4ba13e09c9d9c1cb6abb59da8295d9952328b

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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.