Improper input validation in Linux kernel fs

1) Improper input validation

EUVDB-ID: #VU95252

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2010-1088

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation error within the follow_mount() function in fs/namei.c. A remote non-authenticated attacker can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

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

External links

https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=ac278a9c505092dd82077a2446af8f9fc0d9c095
https://lists.opensuse.org/opensuse-security-announce/2010-03/msg00007.html
https://secunia.com/advisories/39742
https://secunia.com/advisories/39830
https://secunia.com/advisories/43315
https://www.debian.org/security/2010/dsa-2053
https://www.mandriva.com/security/advisories?name=MDVSA-2010:088
https://www.mandriva.com/security/advisories?name=MDVSA-2010:198
https://www.novell.com/linux/security/advisories/2010_23_kernel.html
https://www.openwall.com/lists/oss-security/2010/02/24/3
https://www.securityfocus.com/archive/1/516397/100/0/threaded
https://www.securityfocus.com/bid/39044
https://www.vmware.com/security/advisories/VMSA-2011-0003.html
https://bugzilla.redhat.com/show_bug.cgi?id=567813
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10093

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.