Improper input validation in Linux kernel



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2006-1522
CWE-ID CWE-20
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper input validation

EUVDB-ID: #VU95237

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-2006-1522

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The sys_add_key function in the keyring code in Linux kernel 2.6.16.1 and 2.6.17-rc1, and possibly earlier versions, allows local users to cause a denial of service (OOPS) via keyctl requests that add a key to a user key instead of a keyring key, which causes an invalid dereference in the __keyring_search_one function.

Mitigation

Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

CPE2.3 External links

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=188466
https://www.securityfocus.com/bid/17451
https://secunia.com/advisories/19573
https://secunia.com/advisories/20157
https://www.redhat.com/support/errata/RHSA-2006-0493.html
https://secunia.com/advisories/20237
https://www.ubuntu.com/usn/usn-302-1
https://secunia.com/advisories/20716
https://support.avaya.com/elmodocs2/security/ASA-2006-161.htm
https://secunia.com/advisories/21745
https://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.3
https://lwn.net/Alerts/180820/
https://www.osvdb.org/24507
https://secunia.com/advisories/19735
https://www.mandriva.com/security/advisories?name=MDKSA-2006:086
https://www.vupen.com/english/advisories/2006/1307
https://www.vupen.com/english/advisories/2006/1475
https://exchange.xforce.ibmcloud.com/vulnerabilities/25722
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9325
https://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c3a9d6541f84ac3ff566982d08389b87c1c36b4e


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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