CVE-2011-1598

The bcm_release function in net/can/bcm.c in the Linux kernel before 2.6.39-rc6 does not properly validate a socket data structure, which allows local users to cause a denial of service (NULL pointer dereference) or possibly have unspecified other impact via a crafted release operation.

Weakness

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Affected Software

Potential Mitigations

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c6914a6f261aca0c9f715f883a353ae7ff51fe83
• http://openwall.com/lists/oss-security/2011/04/20/2
• http://openwall.com/lists/oss-security/2011/04/20/6
• http://openwall.com/lists/oss-security/2011/04/20/7
• http://openwall.com/lists/oss-security/2011/04/21/1
• http://openwall.com/lists/oss-security/2011/04/21/2
• http://openwall.com/lists/oss-security/2011/04/21/7
• http://openwall.com/lists/oss-security/2011/04/22/2
• http://openwall.com/lists/oss-security/2011/04/25/4
• http://permalink.gmane.org/gmane.linux.network/192898
• http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.39-rc6
• http://www.securityfocus.com/bid/47503
• https://bugzilla.redhat.com/show_bug.cgi?id=698057