#VU95761 Null pointer dereference in Linux kernel - CVE-2005-3274

Vulnerability identifier: #VU95761

Vulnerability risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2005-3274

CWE-ID: CWE-476

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.

Race condition in ip_vs_conn_flush in Linux 2.6 before 2.6.13 and 2.4 before 2.4.32-pre2, when running on SMP systems, allows local users to cause a denial of service (null dereference) by causing a connection timer to expire while the connection table is being flushed before the appropriate lock is acquired.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

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External links
https://lkml.org/lkml/2005/6/23/249
https://lkml.org/lkml/2005/6/24/173
https://www.securityfocus.com/bid/15528
https://www.debian.org/security/2005/dsa-922
https://secunia.com/advisories/18056
https://www.redhat.com/support/errata/RHSA-2006-0190.html
https://secunia.com/advisories/18684
https://wwwnew.mandriva.com/security/advisories?name=MDKSA-2006:044
https://secunia.com/advisories/18977
https://secunia.com/advisories/17826
https://www.redhat.com/support/errata/RHSA-2005-663.html
https://www.mandriva.com/security/advisories?name=MDKSA-2005:218
https://www.mandriva.com/security/advisories?name=MDKSA-2005:235
https://www.mandriva.com/security/advisories?name=MDKSA-2005:220
https://www.mandriva.com/security/advisories?name=MDKSA-2005:219
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11723
https://usn.ubuntu.com/219-1/
https://www.securityfocus.com/archive/1/427981/100/0/threaded
https://www.securityfocus.com/archive/1/427980/100/0/threaded
https://www.kernel.org/git/?p=linux/kernel/git/marcelo/linux-2.4.git%3Ba=commit%3Bh=e684f066dff5628bb61ad1912de6e8058b5b4c7d

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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.