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MDKSA-2005:110 - Updated 2.6 kernel packages fix multiple vulnerabilities
From: Mandriva Security Team <security () mandriva com>
Date: Thu, 30 Jun 2005 16:46:32 -0600

Hash: SHA1


                Mandriva Linux Security Update Advisory

 Package name:           kernel
 Advisory ID:            MDKSA-2005:110
 Date:                   June 30th, 2005

 Affected versions:      10.0, 10.1, 10.2, Corporate 3.0

 Problem Description:

 Multiple vulnerabilities in the Linux kernel have been discovered and
 fixed in this update.  The following CVE names have been fixed in the
 LE2005 kernel:
 Colin Percival discovered a vulnerability in Intel's Hyper-Threading
 technology could allow a local user to use a malicious thread to create
 covert channels, monitor the execution of other threads, and obtain
 sensitive information such as cryptographic keys via a timing attack on
 memory cache misses.  This has been corrected by disabling HT support
 in all kernels (CAN-2005-0109).
 An information leak in the ext2 filesystem code in kernels prior to was found where when a new directory is created, the ext2
 block written to disk is not initialized (CAN-2005-0400).
 A flaw when freeing a pointer in load_elf_library was found in kernels
 prior to that could be abused by a local user to potentially
 crash the machine causing a Denial of Service (CAN-2005-0749).
 A problem with the Bluetooth kernel stack in kernels 2.4.6 through
 2.4.30-rc1 and 2.6 through  could be used by a local attacker
 to gain root access or crash the machine (CAN-2005-0750).
 Paul Starzetz found an integer overflow in the ELF binary format
 loader's code dump function in kernels prior to and including 2.4.31-pre1
 and 2.6.12-rc4.  By creating and executing a specially
 crafted ELF executable, a local attacker could exploit this to
 execute arbitrary code with root and kernel privileges
 The drivers for raw devices used the wrong function to pass arguments
 to the underlying block device in 2.6.x kernels.  This made the kernel
 address space accessible to user-space applictions allowing any local
 user with at least read access to a device in /dev/raw/* (usually only
 root) to execute arbitrary code with kernel privileges (CAN-2005-1264).
 The it87 and via686a hardware monitor drivers in kernels prior to and 2.6.12 prior to 2.6.12-rc2 created a sysfs file named
 'alarms' with write permissions although they are not designed to be
 writable.  This allowed a local user to crash the kernel by attempting
 to write to these files (CAN-2005-1369).
 In addition to the above-noted CAN-2005-0109, CAN-2005-0400,
 CAN-2005-0749, CAN-2005-0750, and CAN-2005-1369 fixes, the following
 CVE names have been fixed in the 10.1 kernel:
 The POSIX Capability Linux Security Module (LSM) for 2.6 kernels up to
 and including did not properly handle the credentials of a
 process that is launched before the module is loaded, which could be
 used by local attackers to gain elevated privileges (CAN-2004-1337).
 A flaw in the Linux PPP driver in kernel was found where on
 systems allowing remote users to connect to a server via PPP, a remote
 client could cause a crash, resulting in a Denial of Service
 George Guninski discovered a buffer overflow in the ATM driver in
 kernels 2.6.10 and 2.6.11 before 2.6.11-rc4 where the atm_get_addr()
 function does not validate its arguments sufficiently which could allow
 a local attacker to overwrite large portions of kernel memory by
 supplying a negative length argument. This could potentially lead to
 the execution of arbitrary code (CAN-2005-0531).
 The reiserfs_copy_from_user_to_file_region function in reiserfs/file.c
 before kernel 2.6.11, when running on 64-bit architectures, could allow
 local users to trigger a buffer overflow as a result of casting
 discrepancies between size_t and int data types.  This could allow an
 attacker to overwrite kernel memory, crash the machine, or potentially
 obtain root access (CAN-2005-0532).
 A race condition in the Radeon DRI driver in kernel allows a
 local user with DRI privileges to execute arbitrary code as root
 Access was not restricted to the N_MOUSE discipline for a TTY in
 kernels prior to 2.6.11.  This could allow local attackers to obtain
 elevated privileges by injecting mouse or keyboard events into other
 user's sessions (CAN-2005-0839).
 Some futex functions in futex.c in 2.6 kernels performed get_user calls
 while holding the mmap_sem semaphore, which could allow a local
 attacker to cause a deadlock condition in do_page_fault by triggering
 get_user faults while another thread is executing mmap or other
 functions (CAN-2005-0937).
 In addition to the above-noted CAN-2004-1337, CAN-2005-0109,
 CAN-2005-0384, CAN-2005-0400, CAN-2005-0531, CAN-2005-0532,
 CAN-2005-0749, CAN-2005-0750, CAN-2005-0767, CAN-2005-0839,
 CAN-2005-0937, CAN-2005-1263, CAN-2005-1264, and CAN-2005-1369 
 fixes, the following CVE names have been fixed in the 10.0/
 Corporate 3.0 kernels:
 A race condition in the setsid function in kernels before could
 allow a local attacker to cause a Denial of Service and possibly access
 portions of kernel memory related to TTY changes, locking, and
 semaphores (CAN-2005-0178).
 When forwarding fragmented packets in kernel, a hardware
 assisted checksum could only be used once which could lead to a Denial
 of Service attack or crash by remote users (CAN-2005-0209).
 A signedness error in the copy_from_read_buf function in n_tty.c
 before kernel 2.6.11 allows local users to read kernel memory via a
 negative argument (CAN-2005-0530).
 A vulnerability in the fib_seq_start() function allowed a local user
 to crash the system by readiung /proc/net/route in a certain way,
 causing a Denial of Service (CAN-2005-1041).
 A vulnerability in the Direct Rendering Manager (DRM) driver in the
 2.6 kernel does not properly check the DMA lock, which could allow
 remote attackers or local users to cause a Denial of Service (X Server
 crash) and possibly modify the video output (CAN-2004-1056).



 Updated Packages:
 Mandrakelinux 10.0:
 fde15b50eb6b25c01363906ac9311a99  10.0/RPMS/kernel-
 4bac2ba6182cfc7a0b096643e5cf4864  10.0/RPMS/kernel-enterprise-
 11f460372ed0f9bcbdf4d1d2ef172021  10.0/RPMS/kernel-i686-up-4GB-
 c5c7869f7ba96fa2d323678aa64bbbff  10.0/RPMS/kernel-p3-smp-64GB-
 c191f0627aaf8c4ec4882114241bd990  10.0/RPMS/kernel-secure-
 e545c57e7ecd4cf7391c002f810488d2  10.0/RPMS/kernel-smp-
 a6ab3a8dfb0da9376a2ef75953ee4eca  10.0/RPMS/kernel-source-2.6.3-27mdk.i586.rpm
 81549411e82297db4fadf45db8d91147  10.0/RPMS/kernel-source-stripped-2.6.3-27mdk.i586.rpm
 0161e0b7c6783f7484e2b13e80565a9a  10.0/SRPMS/kernel-

 Mandrakelinux 10.0/AMD64:
 e776c1c98e4030da8c836e4291257dda  amd64/10.0/RPMS/kernel-
 bf5c1a5412f35167ef3ac32257a80d5b  amd64/10.0/RPMS/kernel-secure-
 fd97913601dca600a22c4c6afcd92999  amd64/10.0/RPMS/kernel-smp-
 0c95a5bf2565e80cdbb236c730d563c7  amd64/10.0/RPMS/kernel-source-2.6.3-27mdk.amd64.rpm
 a2feebf592ad2041cfa7ec7e2758206c  amd64/10.0/RPMS/kernel-source-stripped-2.6.3-27mdk.amd64.rpm
 0161e0b7c6783f7484e2b13e80565a9a  amd64/10.0/SRPMS/kernel-

 Mandrakelinux 10.1:
 f9bc117f5575bb120fdae314f65ad1f9  10.1/RPMS/kernel-
 b321c503f18429f4b3883c16230e158f  10.1/RPMS/kernel-enterprise-
 08d2a5d4447588818f78f8ad4e9db138  10.1/RPMS/kernel-i586-up-1GB-
 7f677908eb0fb03ff5db2a3eefc381d9  10.1/RPMS/kernel-i686-up-64GB-
 7a1319d8c53d56582f0434f0f7898d2d  10.1/RPMS/kernel-secure-
 352a4af3300e60399f78bca4e77945d0  10.1/RPMS/kernel-smp-
 224358bcd6d086bf7fafa727a9322902  10.1/RPMS/kernel-source-2.6-
 725a2ff7ee8dee45cdf1d296c4af899c  10.1/RPMS/kernel-source-stripped-2.6-
 2b3bd96a8746eed953c950e13d257d5d  10.1/SRPMS/kernel-

 Mandrakelinux 10.1/X86_64:
 deba2195393307cfbc3eda4da5ba9b55  x86_64/10.1/RPMS/kernel-
 2dd4ba5eb8f59af931ea08e13895953c  x86_64/10.1/RPMS/kernel-secure-
 29b46c7761117fa78b6ac84b78c2c95f  x86_64/10.1/RPMS/kernel-smp-
 a5894bf0dedc2b92507c0a3aaf72b070  x86_64/10.1/RPMS/kernel-source-2.6-
 d9fc9585545fe50959ae48075bdb8611  x86_64/10.1/RPMS/kernel-source-stripped-2.6-
 2b3bd96a8746eed953c950e13d257d5d  x86_64/10.1/SRPMS/kernel-

 Mandrakelinux 10.2:
 f8da585477aff19802764a73a832cb1c  10.2/RPMS/kernel-
 07b27b601ebe941fbfa0f9ce61e4fc1f  10.2/RPMS/kernel-i586-up-1GB-
 bc40a826454080bb9444f6572508d4d6  10.2/RPMS/kernel-i686-up-4GB-
 1a7393ef7ad8a776d33577d06b666944  10.2/RPMS/kernel-smp-
 81615112f862f81a0479715c590e7e06  10.2/RPMS/kernel-source-2.6-2.6.11-12mdk.i586.rpm
 28fe68ece81b564741b1a679b23afe8c  10.2/RPMS/kernel-source-stripped-2.6-2.6.11-12mdk.i586.rpm
 94c55fab597d0c982d092efe204f20bb  10.2/RPMS/kernel-xbox-
 eccc248c8d65d091a93ac01cec3f1110  10.2/SRPMS/kernel-

 Mandrakelinux 10.2/X86_64:
 6aa43ead23e6297fd1ca024a91b00129  x86_64/10.2/RPMS/kernel-
 6a04e09e487c04ac9a60506fc5e37773  x86_64/10.2/RPMS/kernel-smp-
 a3c12e575259175a5433c4aa6b282b9e  x86_64/10.2/RPMS/kernel-source-2.6-2.6.11-12mdk.x86_64.rpm
 e4a470f6f4ebba211dd9dca0eb5ac246  x86_64/10.2/RPMS/kernel-source-stripped-2.6-2.6.11-12mdk.x86_64.rpm
 eccc248c8d65d091a93ac01cec3f1110  x86_64/10.2/SRPMS/kernel-

 Corporate 3.0:
 fde15b50eb6b25c01363906ac9311a99  corporate/3.0/RPMS/kernel-
 4bac2ba6182cfc7a0b096643e5cf4864  corporate/3.0/RPMS/kernel-enterprise-
 11f460372ed0f9bcbdf4d1d2ef172021  corporate/3.0/RPMS/kernel-i686-up-4GB-
 c5c7869f7ba96fa2d323678aa64bbbff  corporate/3.0/RPMS/kernel-p3-smp-64GB-
 c191f0627aaf8c4ec4882114241bd990  corporate/3.0/RPMS/kernel-secure-
 e545c57e7ecd4cf7391c002f810488d2  corporate/3.0/RPMS/kernel-smp-
 a6ab3a8dfb0da9376a2ef75953ee4eca  corporate/3.0/RPMS/kernel-source-2.6.3-27mdk.i586.rpm
 81549411e82297db4fadf45db8d91147  corporate/3.0/RPMS/kernel-source-stripped-2.6.3-27mdk.i586.rpm
 0161e0b7c6783f7484e2b13e80565a9a  corporate/3.0/SRPMS/kernel-

 Corporate 3.0/X86_64:
 96fdece51d557ea9dc86b77d80ef6537  x86_64/corporate/3.0/RPMS/kernel-
 e89fd0dcef1c123fb5730179e9930529  x86_64/corporate/3.0/RPMS/kernel-secure-
 3bac8cfb55ed2843d192e556dbafd62c  x86_64/corporate/3.0/RPMS/kernel-smp-
 a77c835b23e270bb23944630e4677b1b  x86_64/corporate/3.0/RPMS/kernel-source-2.6.3-27mdk.x86_64.rpm
 93ba3be628ae43ab9a2f2b2656c06f7f  x86_64/corporate/3.0/RPMS/kernel-source-stripped-2.6.3-27mdk.x86_64.rpm
 0161e0b7c6783f7484e2b13e80565a9a  x86_64/corporate/3.0/SRPMS/kernel-

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

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

  gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

 You can view other update advisories for Mandriva Linux at:


 If you want to report vulnerabilities, please contact


 Type Bits/KeyID     Date       User ID
 pub  1024D/22458A98 2000-07-10 Mandriva Security Team

Version: GnuPG v1.2.4 (GNU/Linux)


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