[Full-Disclosure] MDKSA-2003:066-2 - Updated kernel packages fix multiple vulnerabilities

From: Mandrake Linux Security Team (security_at_linux-mandrake.com)
Date: 07/25/03

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                    Mandrake Linux Security Update Advisory

    Package name: kernel
    Advisory ID: MDKSA-2003:066-2
    Date: July 25th, 2003
    Original Advisory Date: June 11th, 2003
    Affected versions: 9.1

    Problem Description:

     Multiple vulnerabilities were discovered and fixed in the Linux kernel.
     * CAN-2003-0001: Multiple ethernet network card drivers do not pad
       frames with null bytes which allows remote attackers to obtain
       information from previous packets or kernel memory by using
       special malformed packets.
     * CAN-2003-0244: The route cache implementation in the 2.4 kernel and
       the Netfilter IP conntrack module allows remote attackers to cause a
       Denial of Service (DoS) via CPU consumption due to packets with
       forged source addresses that cause a large number of hash table
       collisions related to the PREROUTING chain.
     * CAN-2003-0246: The ioperm implementation in 2.4.20 and earlier
       kernels does not properly restrict privileges, which allows local
       users to gain read or write access to certain I/O ports.
     * CAN-2003-0247: A vulnerability in the TTY layer of the 2.4 kernel
       allows attackers to cause a kernel oops resulting in a DoS.
     * CAN-2003-0248: The mxcsr code in the 2.4 kernel allows attackers to
       modify CPU state registers via a malformed address.
     * CAN-2003-0462: A file read race existed in the execve() system call.
     As well, a number of bug fixes were made in the 9.1 kernel including:
     * Support for more machines that did not work with APIC
     * Audigy2 support
     * New/updated modules: prims25, adiusbadsl, thinkpad, ieee1394,
       orinoco, via-rhine,
     * Fixed SiS IOAPIC
     * IRQ balancing has been fixed for SMP
     * Updates to ext3
     * The previous ptrace fix has been redone to work better
     * Bugs with compiling kernels using xconfig have been fixed
     * Problems with ipsec have been corrected
     * XFS ACLs are now present
     * gdb not working on XFS root filesystems has been fixed
     MandrakeSoft encourages all users to upgrade to these new kernels.
     Updated kernels will be available shortly for other supported platforms
     and architectures.
     For full instructions on how to properly upgrade your kernel, please
     review http://www.mandrakesecure.net/en/docs/magic.php.

     The kernels provided in MDKSA-2003:066-1 (2.4.21-0.24mdk) had a problem
     where all files created on any filesystem other than XFS, and using any
     kernel other than kernel-secure, would be created with mode 0666, or
     world writeable. The 0.24mdk kernels have been removed from the
     mirrors and users are encouraged to upgrade and remove those kernels
     from their systems to prevent accidentally booting into them.
     That issue has been addressed and fixed with these new kernels.


    Updated Packages:
     Mandrake Linux 9.1:
     419058c00d6cbc637c3a8fc8856438ef 9.1/RPMS/kernel-
     9a4382eef9022e9d650171e9b99e40e8 9.1/RPMS/kernel-BOOT-
     8fb033ae79f8d62ef7db8116dbd8a258 9.1/RPMS/kernel-doc-2.4.21-0.25mdk.i586.rpm
     7c4446a519dc48c70a13e8765c19c35f 9.1/RPMS/kernel-enterprise-
     7b1824f5cc6e22f7a2ff8d21be497e57 9.1/RPMS/kernel-secure-
     1a1b38775940278848e30ad740552748 9.1/RPMS/kernel-smp-
     680b79e2591161ba6829fd3656f16abb 9.1/RPMS/kernel-source-2.4.21-0.25mdk.i586.rpm
     ecb903bcd0dd169eeb53f534638b7cd7 9.1/SRPMS/kernel-

     Mandrake Linux 9.1/PPC:
     558d5d6784f15775a5c9b8da0855fdeb ppc/9.1/RPMS/kernel-
     b402ff80467c57470eff93b59e929045 ppc/9.1/RPMS/kernel-doc-2.4.21-0.25mdk.ppc.rpm
     bbf10a690a4ad709b20aed72efd59319 ppc/9.1/RPMS/kernel-enterprise-
     8f55bcf38b775c0ddfb3d6c2e9f8bcae ppc/9.1/RPMS/kernel-smp-
     770db5f9460490b2ad47ea2863be1c38 ppc/9.1/RPMS/kernel-source-2.4.21-0.25mdk.ppc.rpm
     ecb903bcd0dd169eeb53f534638b7cd7 ppc/9.1/SRPMS/kernel-

    Bug IDs fixed (see https://qa.mandrakesoft.com for more information):
      3615 - no acls in XFS
      4059 - xconfig aborts with an error
      4060 - xconfig unable to disable certain options

    To upgrade automatically, use MandrakeUpdate or urpmi. The verification
    of md5 checksums and GPG signatures is performed automatically for you.

    A list of FTP mirrors can be obtained from:


    All packages are signed by MandrakeSoft for security. You can obtain
    the GPG public key of the Mandrake Linux Security Team by executing:

      gpg --recv-keys --keyserver www.mandrakesecure.net 0x22458A98

    Please be aware that sometimes it takes the mirrors a few hours to

    You can view other update advisories for Mandrake Linux at:


    MandrakeSoft has several security-related mailing list services that
    anyone can subscribe to. Information on these lists can be obtained by


    If you want to report vulnerabilities, please contact


    Type Bits/KeyID Date User ID
    pub 1024D/22458A98 2000-07-10 Linux Mandrake Security Team
      <security linux-mandrake.com>
    Version: GnuPG v1.0.7 (GNU/Linux)

    -----END PGP SIGNATURE-----
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