#VU92625 Integer overflow in Linux kernel - CVE-2005-4886

Vulnerability identifier: #VU92625

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2005-4886

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

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

Vendor: Linux Foundation

Description

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

The vulnerability exists due to integer overflow error within the selinux_parse_skb_ipv6() function in security/selinux/hooks.c, within the is_ineligible() and icmpv6_notify() functions in net/ipv6/icmp.c, within the ipv6_ext_hdr() and ipv6_skip_exthdr() functions in net/ipv6/exthdrs_core.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

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External links
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0d3d077cd4f1154e63a9858e47fe3fb1ad0c03e5
https://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.12/ChangeLog-2.6.12-rc4
https://www.openwall.com/lists/oss-security/2010/02/22/3
https://bugzilla.redhat.com/show_bug.cgi?id=160117
https://exchange.xforce.ibmcloud.com/vulnerabilities/56614

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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 Internet.

Is there known malware, which exploits this vulnerability?

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