Input validation error in Linux kernel - CVE-2010-2524

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Main Vulnerability Database Vulnerabilities #VU94166

Input validation error in Linux kernel - CVE-2010-2524

Published: September 8, 2010 / Updated: February 13, 2023


Vulnerability identifier: #VU94166
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2010-2524
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel

Detailed vulnerability description

The vulnerability allows a local user to execute arbitrary code.

The DNS resolution functionality in the CIFS implementation in the Linux kernel before 2.6.35, when CONFIG_CIFS_DFS_UPCALL is enabled, relies on a user's keyring for the dns_resolver upcall in the cifs.upcall userspace helper, which allows local users to spoof the results of DNS queries and perform arbitrary CIFS mounts via vectors involving an add_key call, related to a 'cache stuffing' issue and MS-DFS referrals.


How to mitigate CVE-2010-2524

Install update from vendor's website.

Sources