PT-2002-2548 · Linux · Linux Kernel+1

Published 2002-12-31 · Updated 2008-09-05 · CVE-2002-1826

Positive Technologies (AI Summary)

CVSS v2.0

4.6

Medium

Base vector

AV:L/AC:L/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions grsecurity version 1.9.4 for Linux kernel 2.4.18

Description The issue allows local users to bypass read-only permissions. This is achieved by using mmap to directly map /dev/mem or /dev/kmem to kernel memory, thus potentially allowing unauthorized access to sensitive areas of the system.

Recommendations For grsecurity version 1.9.4, consider restricting access to /dev/mem and /dev/kmem to prevent unauthorized mapping to kernel memory. As a temporary workaround, limit the use of mmap to reduce the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Related Identifiers

CVE-2002-1826

Affected Products

Linux Kernel

Grsecurity

References · 5

• 🔥 http://securityfocus.com/bid/4762 · Exploit
• 🔥 https://exploit-db.com/exploits/21458 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2002-1826 · Security Note
• http://iss.net/security_center/static/9109.php · Note
• http://online.securityfocus.com/archive/1/273002 · Note