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Family: Debian Local Security Checks --> Category: infos

[DSA475] DSA-475-1 linux-kernel-2.4.18-hppa Vulnerability Scan

Vulnerability Scan Summary
DSA-475-1 linux-kernel-2.4.18-hppa

Detailed Explanation for this Vulnerability Test

Several local root exploits have been discovered recently in the Linux
kernel. This security advisory updates the PA-RISC kernel 2.4.18 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 allows 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
allow 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 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.
Please note that the source package has to include a lot of updates in
order to compile the package, which wasn't possible with the old
source package.
For the stable distribution (woody) these problems have been fixed in
version 62.1 of kernel-image-2.4.18-hppa.
For the unstable distribution (sid) these problems have been fixed in
version 2.4.25-1 of kernel-image-2.4.25-hppa.
We recommend that you upgrade your Linux kernel packages immediately.

Solution :
Threat Level: High

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