Information disclosure in Linux kernel i2c busses driver

1) Information disclosure

EUVDB-ID: #VU91403

Risk: Low

CVSSv3.1: 2.9 [AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-36778

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to information disclosure within the xiic_xfer() and xiic_i2c_remove() functions in drivers/i2c/busses/i2c-xiic.c. A local user can gain access to sensitive information.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://git.kernel.org/stable/c/c977426db644ba476938125597947979e8aba725
http://git.kernel.org/stable/c/e2ba996577eaea423694dc69ae43d56f1410a22b
http://git.kernel.org/stable/c/a42ac16e6573f19c78f556ea292f5b534fcc4514
http://git.kernel.org/stable/c/a85c5c7a3aa8041777ff691400b4046e56149fd3

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.