Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | 2.6.0 |
References
- http://secunia.com/advisories/11577Vendor Advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.6
- http://www.osvdb.org/5997
- http://www.securityfocus.com/bid/10302
- http://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1242.htmlExploitPatch
- http://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1265.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/16106
- http://secunia.com/advisories/11577Vendor Advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.6
- http://www.osvdb.org/5997
- http://www.securityfocus.com/bid/10302
- http://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1242.htmlExploitPatch
- http://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1265.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/16106
FAQ
What is CVE-2004-2536?
CVE-2004-2536 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 n...
How severe is CVE-2004-2536?
CVE-2004-2536 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2004-2536?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.