Vulnerability identifier: #VU90290

Vulnerability risk: Low

CVSSv3.1: 4.8 [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-2021-47240

CWE-ID: CWE-125

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 an out-of-bounds read error within the qrtr_endpoint_post() function in net/qrtr/qrtr.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/f8111c0d7ed42ede41a3d0d393b104de0730a8a6
http://git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f
http://git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8
http://git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe
http://git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d

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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.