#VU10724 Information disclosure in Linux kernel - CVE-2017-7889

Vulnerability identifier: #VU10724

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-7889

CWE-ID: CWE-200

Exploitation vector: Local

Exploit availability: No

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

Vendor: Linux Foundation

Description
The vulnerability allows a local attacker to gain access to potentially sensitive information.

The weakness exists in the CONFIG_STRICT_DEVMEM protection mechanism due to an improper enforcement. A local attacker can read or write to kernel memory locations in the first megabyte and bypass slab-allocation access restrictions.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.10.0 - 4.10.10

---

External links
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a4866aa812518ed1a37d8e...

---

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.