The copy_creds function in kernel/cred.c in the Linux kernel before 3.3.2 provides an invalid replacement session keyring to a child process, which allows local users to cause a denial of service (panic) via a crafted application that uses the fork system call.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.2 | |
| http://www.ubuntu.com/usn/USN-1606-1 | vendor advisory |
| https://github.com/torvalds/linux/commit/79549c6dfda0603dba9a70a53467ce62d9335c33 | patch |
| http://www.ubuntu.com/usn/USN-1567-1 | vendor advisory |
| http://www.ubuntu.com/usn/USN-1597-1 | vendor advisory |
| http://secunia.com/advisories/50853 | third party advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=833428 | |
| http://secunia.com/advisories/50961 | third party advisory |
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=79549c6dfda0603dba9a70a53467ce62d9335c33 | |
| http://www.securitytracker.com/id?1027236 | vdb entry |
| http://www.securityfocus.com/bid/54365 | vdb entry |
| http://rhn.redhat.com/errata/RHSA-2012-1064.html | vendor advisory |
| http://secunia.com/advisories/50633 | third party advisory |