CVE-2004-2536
CVE-2004-2536
The exit_thread function (process.c) in Linux kernel 2.6 through 2.6.5 does not invalidate the per-TSS io_bitmap pointers if a process obtains IO access permissions from the ioperm function but does not drop those permissions when it exits, which allows other processes to access the per-TSS pointers, access restricted memory locations, and possibly gain privileges.
Affected products
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http://secunia.com/advisories/11577https://exchange.xforce.ibmcloud.com/vulnerabilities/16106http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.6http://www.osvdb.org/5997http://www.securityfocus.com/bid/10302http://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1242.htmlhttp://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1265.html