Denial of service in Linux Kernel

1) Data handling

EUVDB-ID: #VU12266

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-2017-15127

CWE-ID: CWE-19 - Data Handling

Exploit availability: No

Description

The vulnerability allows a local attacker to cause DOS condition on the target system.

The weakness exists in the hugetlb_mcopy_atomic_pte function in mm/hugetlb.c due to a superfluous implicit page unlock for VM_SHARED hugetlbfs mapping. A local attacker can cause the service to crash.

Mitigation

Update to version 4.13.

Vulnerable software versions

Linux kernel: 4.12 - 4.12.14

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:4.12.14:*:*:*:*:*:*:*

External links

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5af10dfd0afc559bb4b0f7...

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.