#VU95237 Improper input validation in Linux kernel - CVE-2006-1522
Vulnerability identifier: #VU95237
Vulnerability 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:
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 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
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.
