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>> Linux Kernel Security Bypass and Denial of Service Vulnerabilities
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Two vulnerabilities have been identified in Linux Kernel, which could be exploited by local attackers to cause a denial of service or bypass security restrictions.
The first issue is caused by an integer overflow error in the "sctp_getsockopt_local_addrs_old()" [net/sctp/socket.c] function in the Stream Control Transmission Protocol (sctp) functionality when handling a large "addr_num" field in a "sctp_getaddrs_old" data structure, which could allow local attackers to create a denial of service condition.
The second vulnerability is caused by an error in the "sbni_ioctl()" [drivers/net/wan/sbni.c] function that does not check for the "CAP_NET_ADMIN" capability before processing a "SIOCDEVRESINSTATS", "SIOCDEVSHWSTATE", "SIOCDEVENSLAVE", or "SIOCDEVEMANSIPATE" ioctl request, which could allow local users to bypass intended capability restrictions.
Affected Products
Linux Kernel versions prior to 2.4.36.7
Solution
Upgrade to Linux Kernel version 2.4.36.7 :
http://www.kernel.org/
References
http://www.vupen.com/english/advisories/2008/2511
http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.36.7
Credits
Vulnerabilities reported by David S. Miller and Eugene Teo.
ChangeLog
2008-09-08 : Initial release
Vulnerability Management
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