#VU94165 Input validation error in Linux kernel - CVE-2010-2066

Vulnerability identifier: #VU94165

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2010-2066

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

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

Vendor: Linux Foundation

Description

The vulnerability allows a local user to manipulate data.

The mext_check_arguments function in fs/ext4/move_extent.c in the Linux kernel before 2.6.35 allows local users to overwrite an append-only file via a MOVE_EXT ioctl call that specifies this file as a donor.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://www.openwall.com/lists/oss-security/2010/06/07/1
https://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35
https://www.openwall.com/lists/oss-security/2010/06/09/1
https://bugzilla.redhat.com/show_bug.cgi?id=601006
https://lists.opensuse.org/opensuse-security-announce/2010-08/msg00000.html
https://www.redhat.com/support/errata/RHSA-2010-0610.html
https://www.ubuntu.com/usn/USN-1000-1
https://www.vmware.com/security/advisories/VMSA-2011-0003.html
https://secunia.com/advisories/43315
https://www.securityfocus.com/archive/1/516397/100/0/threaded
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1f5a81e41f8b1a782c68d3843e9ec1bfaadf7d72

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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.