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Debian Security Advisory DSA 438-1 (kernel)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update to kernel-source-2.4.18, kernel-image-2.4.18-1-alpha, kernel-image-2.4.18-1-i386, kernel-image-2.4.18-i386bf, kernel-patch-2.4.18-powerpc announced via advisory DSA 438-1.
Insight
Insight
Paul Starzetz and Wojciech Purczynski of isec.pl 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 privileges. For the stable distribution (woody) this problem has been fixed in version 2.4.18-14.2 of kernel-source, version 2.4.18-14 of alpha images, version 2.4.18-12.2 of i386 images, version 2.4.18-5woody7 of i386bf images and version 2.4.18-1woody4 of powerpc images. Other architectures will probably mentioned in a separate advisory or are not affected (m68k). For the unstable distribution (sid) this problem is fixed in version 2.4.24-3 for source, i386 and alpha images and version 2.4.22-10 for powerpc images. This problem is also fixed in the upstream version of Linux 2.4.25 and 2.6.3. We recommend that you upgrade your Linux kernel packages immediately.
Solution
Solution
https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20438-1