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Debian GNU/Linux Advisory: kernel-source-2.2.20, et al.

By

Debian Security Advisory DSA 453-1 security@debian.org
http://www.debian.org/security/
Martin Schulze
March 2nd, 2004 http://www.debian.org/security/faq

Package : kernel-source-2.2.20, kernel-image-2.2.20-i386,
kernel-image-2.2.20-reiserfs-i386, kernel-image-2.2.20-amiga,
kernel-image-2.2.20-atari, kernel-image-2.2.20-bvme6000,
kernel-image-2.2.20-mac, kernel-image-2.2.20-mvme147,
kernel-image-2.2.20-mvme16x, kernel-patch-2.2.20-powerpc
Vulnerability : failing function and TLB flush
Problem-Type : local
Debian-specific: no
CVE ID : CAN-2004-0077

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 flushing the TLB
(Translation Lookaside Buffer, an address cache) too early it is
possible for an attacker to trigger a local root exploit.

The attack vectors for 2.4.x and 2.2.x kernels are exclusive for
the respective kernel series, though. We formerly believed that the
exploitable vulnerability in 2.4.x does not exist in 2.2.x which is
still true. However, it turned out that a second (sort of)
vulnerability is indeed exploitable in 2.2.x, but not in 2.4.x,
with a different exploit, of course.

For the stable distribution (woody) this problem has been fixed
in the following versions and architectures:

kernel-source-2.2.20 source 2.2.20-5woody3
kernel-image-2.2.20-i386 i386 2.2.20-5woody5
kernel-image-2.2.20-reiserfs-i386 i386 2.2.20-4woody1
kernel-image-2.2.20-amiga m68k 2.20-4
kernel-image-2.2.20-atari m68k 2.2.20-3
kernel-image-2.2.20-bvme6000 m68k 2.2.20-3
kernel-image-2.2.20-mac m68k 2.2.20-3
kernel-image-2.2.20-mvme147 m68k 2.2.20-3
kernel-image-2.2.20-mvme16x m68k 2.2.20-3
kernel-patch-2.2.20-powerpc powerpc 2.2.20-3woody1

For the unstable distribution (sid) this problem will be fixed
soon for the architectures that still ship a 2.2.x kernel
package.

We recommend that you upgrade your Linux kernel package.

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:


http://security.debian.org/pool/updates/main/k/kernel-source-2.2.20/kernel-source-2.2.20_2.2.20-5woody3.dsc

Size/MD5 checksum: 661 4eede8cde6013e6660459173dacd8e4e

http://security.debian.org/pool/updates/main/k/kernel-source-2.2.20/kernel-source-2.2.20_2.2.20-5woody3.diff.gz

Size/MD5 checksum: 159991 26db63a4af138d5c67c433da29778102

http://security.debian.org/pool/updates/main/k/kernel-source-2.2.20/kernel-source-2.2.20_2.2.20.orig.tar.gz

Size/MD5 checksum: 19394649 57c0edf86cb23a5b215db9121c9b3557


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-i386/kernel-image-2.2.20-i386_2.2.20-5woody5.dsc

Size/MD5 checksum: 808 e0ab6c5a72afc1bb1bf8ac79901aaa10

http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-i386/kernel-image-2.2.20-i386_2.2.20-5woody5.tar.gz

Size/MD5 checksum: 14062 dee74cee41726fc43d5e2d2ff765106f


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-reiserfs-i386/kernel-image-2.2.20-reiserfs-i386_2.2.20-4woody1.dsc

Size/MD5 checksum: 763 c8edde803877bdac6c5176892724e6cd

http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-reiserfs-i386/kernel-image-2.2.20-reiserfs-i386_2.2.20-4woody1.tar.gz

Size/MD5 checksum: 6341 42bf6d7336c973fa7a782710007c4c0d


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-amiga/kernel-image-2.2.20-amiga_2.2.20-4.dsc

Size/MD5 checksum: 636 9278a7e66394ce2ed88dee9157a55942

http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-amiga/kernel-image-2.2.20-amiga_2.2.20-4.tar.gz

Size/MD5 checksum: 3733 4c640cd56182c20882e3fe534ee8685a


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-atari/kernel-image-2.2.20-atari_2.2.20-3.dsc

Size/MD5 checksum: 636 138af6942e118d1171f765e8811cd6ae

http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-atari/kernel-image-2.2.20-atari_2.2.20-3.tar.gz

Size/MD5 checksum: 3657 358575286c68dbd0ed01e34902f013eb


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-bvme6000/kernel-image-2.2.20-bvme6000_2.2.20-3.dsc

Size/MD5 checksum: 630 ef185741b10a0453dfed1d174b9cb21a

http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-bvme6000/kernel-image-2.2.20-bvme6000_2.2.20-3.tar.gz

Size/MD5 checksum: 3372 85e13320526f3e72b8e480ec2606ea7c


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-mac/kernel-image-2.2.20-mac_2.2.20-3.dsc

Size/MD5 checksum: 630 7eb61d65166a85de5a36c1319f705ace

http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-mac/kernel-image-2.2.20-mac_2.2.20-3.tar.gz

Size/MD5 checksum: 3543 f178454597e898c72df8a98f3f48c8eb


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-mvme147/kernel-image-2.2.20-mvme147_2.2.20-3.dsc

Size/MD5 checksum: 627 2ca571f0dc73b19cb4e95832e6b329b2

http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-mvme147/kernel-image-2.2.20-mvme147_2.2.20-3.tar.gz

Size/MD5 checksum: 3356 fcec4b45ef27b634742b7e93dce4b8f2


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-mvme16x/kernel-image-2.2.20-mvme16x_2.2.20-3.dsc

Size/MD5 checksum: 627 65e1bd5bec651d976ee05f9b8f4d9b48

http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-mvme16x/kernel-image-2.2.20-mvme16x_2.2.20-3.tar.gz

Size/MD5 checksum: 3388 bcdeb01f56e23d6222582fbccf45d0dd


http://security.debian.org/pool/updates/main/k/kernel-patch-2.2.20-powerpc/kernel-patch-2.2.20-powerpc_2.2.20-3woody1.dsc

Size/MD5 checksum: 724 6678c67a4d8ca5d865fad683b294f1b2

http://security.debian.org/pool/updates/main/k/kernel-patch-2.2.20-powerpc/kernel-patch-2.2.20-powerpc_2.2.20-3woody1.tar.gz

Size/MD5 checksum: 19725 e5afc11169cae702f8efbf04827fcf33

Architecture independent components:


http://security.debian.org/pool/updates/main/k/kernel-source-2.2.20/kernel-doc-2.2.20_2.2.20-5woody3_all.deb

Size/MD5 checksum: 1162414 d244e1206d51a785d2a298df8ffbb9e8

http://security.debian.org/pool/updates/main/k/kernel-source-2.2.20/kernel-source-2.2.20_2.2.20-5woody3_all.deb

Size/MD5 checksum: 15848780 33170e34a3d4c56e910314be93f0b184


http://security.debian.org/pool/updates/main/k/kernel-patch-2.2.20-powerpc/kernel-patch-2.2.20-powerpc_2.2.20-3woody1_all.deb

Size/MD5 checksum: 18658 2f81d9dca6c10e1f41d5e845d5e0f2ce

Intel IA-32 architecture:


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-i386/kernel-headers-2.2.20_2.2.20-5woody5_i386.deb

Size/MD5 checksum: 1919670 25ea7ce56e42d74ad5a60009af2e0e8a

http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-i386/kernel-headers-2.2.20-compact_2.2.20-5woody5_i386.deb

Size/MD5 checksum: 1868748 8bcbd7573c6b1c53900e1f25f712a612

http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-i386/kernel-headers-2.2.20-idepci_2.2.20-5woody5_i386.deb

Size/MD5 checksum: 1840548 7969d01dd04f032627652e29a048f687

http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-i386/kernel-image-2.2.20_2.2.20-5woody5_i386.deb

Size/MD5 checksum: 5789366 accfe06e7e38d1d2ef61df381b1710c1

http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-i386/kernel-image-2.2.20-compact_2.2.20-5woody5_i386.deb

Size/MD5 checksum: 1623778 befd89e4a89547b696fcb1e3e3d6bd79

http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-i386/kernel-image-2.2.20-idepci_2.2.20-5woody5_i386.deb

Size/MD5 checksum: 1284342 c532a46f993cef7f5508d3a98bd2e1e5


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-reiserfs-i386/kernel-headers-2.2.20-reiserfs_2.2.20-4woody1_i386.deb

Size/MD5 checksum: 1898558 fd91d75e0abeb484fafd41542e61a3a3

http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-reiserfs-i386/kernel-image-2.2.20-reiserfs_2.2.20-4woody1_i386.deb

Size/MD5 checksum: 1703058 28bed77f45f8a4d10c9843a73200500b

Motorola 680×0 architecture:


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-amiga/kernel-image-2.2.20-amiga_2.2.20-4_m68k.deb

Size/MD5 checksum: 1533156 ae9b3e8bb75af6072f2558411c600db1


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-atari/kernel-image-2.2.20-atari_2.2.20-3_m68k.deb

Size/MD5 checksum: 1476746 1658fb396b6b6747db6b10a86853493d


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-bvme6000/kernel-image-2.2.20-bvme6000_2.2.20-3_m68k.deb

Size/MD5 checksum: 1318464 662a840f2a2ee4ab20e2306640efc77e


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-mac/kernel-image-2.2.20-mac_2.2.20-3_m68k.deb

Size/MD5 checksum: 1426616 36e90c602170fa88883d9e5711328238


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-mvme147/kernel-image-2.2.20-mvme147_2.2.20-3_m68k.deb

Size/MD5 checksum: 1252288 d98f6ae70e3b76b9edb00851d2fb10fc


http://security.debian.org/pool/updates/main/k/kernel-image-2.2.20-mvme16x/kernel-image-2.2.20-mvme16x_2.2.20-3_m68k.deb

Size/MD5 checksum: 1323998 b0ae1e8e75af684b293ac92a7eb1b897

PowerPC architecture:


http://security.debian.org/pool/updates/main/k/kernel-patch-2.2.20-powerpc/kernel-headers-2.2.20_2.2.20-3woody1_powerpc.deb

Size/MD5 checksum: 1860028 077556e58768e51fb3e6215c865c6056

http://security.debian.org/pool/updates/main/k/kernel-patch-2.2.20-powerpc/kernel-image-2.2.20-chrp_2.2.20-3woody1_powerpc.deb

Size/MD5 checksum: 3316596 71a3275da4ecd0e0789b3aad8a6ebafd

http://security.debian.org/pool/updates/main/k/kernel-patch-2.2.20-powerpc/kernel-image-2.2.20-pmac_2.2.20-3woody1_powerpc.deb

Size/MD5 checksum: 3349730 c8837a83060a41ded41656f6870ba1da

http://security.debian.org/pool/updates/main/k/kernel-patch-2.2.20-powerpc/kernel-image-2.2.20-prep_2.2.20-3woody1_powerpc.deb

Size/MD5 checksum: 1772322 b61afa06348d176cfde719d57a86a7ad

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

For apt-get: deb http://security.debian.org/
stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security
dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org

Package info: `apt-cache show <pkg>’ and http://packages.debian.org/<pkg>

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