Linux Today: Linux News On Internet Time.

More on LinuxToday

Debian GNU/Liux Advisory: kernel (2.4.16)

Apr 28, 2004, 03:58 (0 Talkback[s])

Debian Security Advisory DSA 495-1 Martin Schulze
April 26th, 2004

Package : kernel-source-2.4.16 kernel-patch-2.4.16-arm kernel-image-2.4.16-lart kernel-image-2.4.16-netwinder kernel-image-2.4.16-riscpc
Vulnerability : several vulnerabilities
Problem-Type : local
Debian-specific: no
CVE ID : CAN-2003-0127 CAN-2004-0003 CAN-2004-0010 CAN-2004-0109 CAN-2004-0177 CAN-2004-0178
Bugtraq ID : 10152

Several serious problems have been discovered in the Linux kernel. This update takes care of Linux 2.4.16 for the ARM architecture. The Common Vulnerabilities and Exposures project identifies the following problems that will be fixed with this update:


The kernel module loader allows local users to gain root privileges by using ptrace to attach to a child process that is spawned by the kernel


A vulnerability has been discovered in the R128 drive in the Linux kernel which could potentially lead an attacker to gain unauthorised privileges. Alan Cox and Thomas Biege developed a correction for this


Arjan van de Ven discovered a stack-based buffer overflow in the ncp_lookup function for ncpfs in the Linux kernel, which could lead an attacker to gain unauthorised privileges. Petr Vandrovec developed a correction for this.


zen-parse discovered a buffer overflow vulnerability in the ISO9660 filesystem component of Linux kernel which could be abused by an attacker to gain unauthorised root access. Sebastian Krahmer and Ernie Petrides developed a correction for this.


Solar Designer discovered an information leak in the ext3 code of Linux. In a worst case a local attacker could obtain sensitive information (such as cryptographic keys in another worst case) which would otherwise never hit disk media. Theodore Ts'o developed a correction for this.


Andreas Kies discovered a denial of service condition in the Sound Blaster driver in Linux. He also developed a correction for this.

These problems are also fixed by upstream in Linux 2.4.26 and will be fixed in Linux 2.6.6.

The following security matrix explains which kernel versions for which architectures are already fixed and which will be removed instead.

Architecture stable (woody) unstable (sid)
source 2.4.16-1woody2 2.4.25-3
arm/patch 20040419 20040316
arm/lart 20040419 2.4.25-4
arm/netwinder 20040419 2.4.25-4
arm/riscpc 20040419 2.4.25-4

We recommend that you upgrade your kernel packages immediately, either with a Debian provided kernel or with a self compiled one.

Upgrade Instructions

wget url

will fetch the file for you
dpkg -i file.deb

will install the referenced file.

If you are using the apt-get package manager, use the line for sources.list as given below:

apt-get update

will update the internal database apt-get upgrade

will install corrected packages

You may use an automated update by adding the resources from the footer to the proper configuration.

Debian GNU/Linux 3.0 alias woody

Source archives:
Size/MD5 checksum: 680 a1ea1561bea3bfeb7b4759a77984b8bf
Size/MD5 checksum: 22668 16b2b377f1e557d40d3a80db9cb8ad54
Size/MD5 checksum: 29364642 8e42e72848dc5098b6433d66d5cacffc
Size/MD5 checksum: 562 c63fd9d71828e954548b556d5e125240
Size/MD5 checksum: 578921 77cd43dd95b087612e8c7cb3234317f7
Size/MD5 checksum: 586 f8e8f67e3f7d83372c837207651faab0
Size/MD5 checksum: 16487 3f60ce2e0b02188b8329f3b6c2e55058
Size/MD5 checksum: 624 65fe313bb761c5bbd9ae635a74dd91c6
Size/MD5 checksum: 21816 18e2386e66448e393060422f62e8e6ca
Size/MD5 checksum: 592 ec5c07d4e0e680b977cf75b638718367
Size/MD5 checksum: 19142 e72a1ed0b5acd3daa71f2b9e61b1deb4

Architecture independent components:
Size/MD5 checksum: 1715626 bc7aec1ea3e2fda01fd6d2866421dbdc
Size/MD5 checksum: 23808362 7a26ba7741038abddd79ce3cf331cd29
Size/MD5 checksum: 583052 df208765fa1a440633145a644b70b7d6

ARM architecture:
Size/MD5 checksum: 717236 7eafa0d8bf0316b8474c8caf4510d333
Size/MD5 checksum: 3435640 9a2fbd1d8f65bfbfdac66575ed8e28d0
Size/MD5 checksum: 6671270 122d99d7819f3f66485f8a77dab09f31
Size/MD5 checksum: 2910474 20602cbdb8783b01c9b32e174cd4d4bd

These files will probably be moved into the stable distribution on its next revision.

For apt-get: deb stable/updates main
For dpkg-ftp: dists/stable/updates/main
Mailing list:
Package info: `apt-cache show <pkg>' and<pkg>