CVE-2004-2536

Summary

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 Software

Weaknesses

• n/a

ADP Enrichment

CVE Program Container

Additional References

• http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.6
• https://exchange.xforce.ibmcloud.com/vulnerabilities/16106
• http://www.osvdb.org/5997
• http://www.securityfocus.com/bid/10302
• http://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1242.html
• http://secunia.com/advisories/11577
• http://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1265.html

References

• http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.6
• https://exchange.xforce.ibmcloud.com/vulnerabilities/16106
• http://www.osvdb.org/5997
• http://www.securityfocus.com/bid/10302
• http://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1242.html
• http://secunia.com/advisories/11577
• http://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1265.html

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