CVE-2011-4594

The __sys_sendmsg function in net/socket.c in the Linux kernel before 3.1 allows local users to cause a denial of service (system crash) via crafted use of the sendmmsg system call, leading to an incorrect pointer dereference.

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=bc909d9ddbf7778371e36a651d6e4194b1cc7d4c
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1
• http://www.openwall.com/lists/oss-security/2011/12/08/4
• https://bugzilla.redhat.com/show_bug.cgi?id=761646
• https://github.com/torvalds/linux/commit/bc909d9ddbf7778371e36a651d6e4194b1cc7d4c