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Home >> Browse Vulnerability Assessment Database >> Debian Local Security Checks >> [DSA439] DSA-439-1 linux-kernel-2.4.16-arm

Vulnerability Assessment Details

[DSA439] DSA-439-1 linux-kernel-2.4.16-arm

Vulnerability Assessment Summary
DSA-439-1 linux-kernel-2.4.16-arm

Detailed Explanation for this Vulnerability Assessment

Several local root exploits have been discovered recently in the Linux
kernel. This security advisory updates the ARM kernel for
Debian GNU/Linux. The Common Vulnerabilities and Exposures project
identifies the following problems that are fixed with this update:
An integer overflow in brk() system call (do_brk() function) for
Linux permits a local attacker to gain root rights. Fixed
upstream in Linux 2.4.23.
Paul Starzetz discovered
a flaw in bounds checking in mremap() in
the Linux kernel (present in version 2.4.x and 2.6.x) which may
permit a local attacker to gain root rights. Version 2.2 is not
affected by this bug. Fixed upstream in Linux 2.4.24.
Paul Starzetz and Wojciech Purczynski of href="">discovered a
critical security vulnerability in the memory management code of
Linux inside the mremap(2) system call. Due to missing function
return value check of internal functions a local attacker can gain
root rights. Fixed upstream in Linux 2.4.25 and 2.6.3.
For the stable distribution (woody) these problems have been fixed in
version 2.4.16-20040204 of lart, netwinder and riscpc image and in
version 20040204 of kernel-patch-2.4.16-arm.
Other architectures will probably be mentioned in a separate advisory or
are not affected (m68k).
For the unstable distribution (sid) these problems will be fixed soon.
We recommend that you upgrade your Linux kernel packages immediately.
Vulnerability matrix for CVE-2004-0077

Solution :
Network Security Threat Level: High

Networks Security ID: 9686

Vulnerability Assessment Copyright: This script is (C) 2005 Michel Arboi

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