Denial of service in Linux Kernel



Published: 2018-06-06
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-10840
CWE-ID CWE-122
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Heap-based buffer overflow

EUVDB-ID: #VU13199

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-10840

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

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

The weakness exists due to heap-based buffer overflow in fs/ext4/xattr.c:ext4_xattr_set_entry(). A local attacker can supply specially crafted ext4 image, trigger memory corruption and cause the system to crash.

Mitigation

Update to version 4.16.12.

Vulnerable software versions

Linux kernel: 4.15 - 4.16.11

External links

http://bugzilla.redhat.com/show_bug.cgi?id=1582348


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.



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