#VU95652 Security restrictions bypass in Linux kernel - CVE-2004-2536

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Main Vulnerability Database Vulnerabilities #VU95652

#VU95652 Security restrictions bypass in Linux kernel - CVE-2004-2536

Published: December 31, 2004 / Updated: July 11, 2017


Vulnerability identifier: #VU95652
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2004-2536
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

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.


Remediation

Install update from vendor's repository.

External links