CVE-2004-2536

Public Exploit

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.

7.5

CVSS

Severity: High

CVSS 2.0 •

EPSS 0.48%

Vendor Advisory secunia.com

Affected: n/a n/a

References

Link	Tags
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.6
https://exchange.xforce.ibmcloud.com/vulnerabilities/16106	vdb entry
http://www.osvdb.org/5997	vdb entry
http://www.securityfocus.com/bid/10302	vdb entry
http://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1242.html	mailing list exploit patch
http://secunia.com/advisories/11577	third party advisory vendor advisory
http://www.ussg.iu.edu/hypermail/linux/kernel/0405.0/1265.html	mailing list

Frequently Asked Questions

What is the severity of CVE-2004-2536?: CVE-2004-2536 has been scored as a high severity vulnerability.
How to fix CVE-2004-2536?: To fix CVE-2004-2536, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2004-2536 being actively exploited in the wild?: It is possible that CVE-2004-2536 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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