#VU45438 NULL pointer dereference in Linux kernel - CVE-2010-4263

Vulnerability identifier: #VU45438

Vulnerability risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2010-4263

CWE-ID: CWE-476

Exploitation vector: Local network

Exploit availability: No

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

Vendor: Linux Foundation

Description

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

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a VLAN tagged frame.

Mitigation
Update to version 2.6.34.

Vulnerable software versions

Linux kernel: 2.6.0 - 2.6.33.20

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External links
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=31b24b955c3ebbb6f3008a6374e61cf7c05a193c
https://openwall.com/lists/oss-security/2010/12/06/3
https://openwall.com/lists/oss-security/2010/12/06/9
https://secunia.com/advisories/42884
https://secunia.com/advisories/42890
https://secunia.com/advisories/46397
https://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.34
https://www.redhat.com/support/errata/RHSA-2011-0007.html
https://www.redhat.com/support/errata/RHSA-2011-0017.html
https://www.securityfocus.com/archive/1/520102/100/0/threaded
https://www.securityfocus.com/bid/45208
https://www.vmware.com/security/advisories/VMSA-2011-0012.html
https://bugzilla.kernel.org/show_bug.cgi?id=15582
https://bugzilla.redhat.com/show_bug.cgi?id=660188

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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