#VU10769 Double-free error in Linux kernel - CVE-2018-7480

Vulnerability identifier: #VU10769

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-2018-7480

CWE-ID: CWE-415

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 cause DoS condition on the target system.

The weakness exists in the block/blk-cgroup.c source code in the blkcg_init_queue function due to double free. A remote attacker can trigger memory corruption and cause the service to crash.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.4.9, 4.8.0 - 4.8.17, 4.9 - 4.9.11, 4.10 - 4.10.17

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External links
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9b54d816e00425c3a51751...

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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.