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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2008.0469 -- [Linux][RedHat] Important: kernel security and bug fix update 8 May 2008 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Linux 3 Linux variants Impact: Execute Arbitrary Code/Commands Denial of Service Increased Privileges Access: Existing Account CVE Names: CVE-2008-1669 CVE-2008-1375 CVE-2008-1367 CVE-2008-0007 CVE-2007-6206 CVE-2007-6151 CVE-2007-5001 CVE-2006-4814 Ref: ESB-2007.0063 ESB-2008.0240 AA-2008.0048 ESB-2008.0451 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2008-0211.html Comment: This advisory references vulnerabilities in the Linux kernel that also affect distributions other than Red Hat. It is recommended that administrators running Linux check for an updated version of the kernel for their system. Revision History: May 8 2008: Added access field May 8 2008: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2008:0211-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0211.html Issue date: 2008-05-07 CVE Names: CVE-2006-4814 CVE-2007-5001 CVE-2007-6151 CVE-2007-6206 CVE-2008-0007 CVE-2008-1367 CVE-2008-1375 CVE-2008-1669 ===================================================================== 1. Summary: Updated kernel packages that fix various security issues and several bugs are now available for Red Hat Enterprise Linux 3. This update has been rated as having important security impact by the Red Hat Security Response Team. 2. Relevant releases/architectures: Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64 Red Hat Desktop version 3 - i386, x86_64 Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64 Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. These updated packages fix the following security issues: * the absence of a protection mechanism when attempting to access a critical section of code has been found in the Linux kernel open file descriptors control mechanism, fcntl. This could allow a local unprivileged user to simultaneously execute code, which would otherwise be protected against parallel execution. As well, a race condition when handling locks in the Linux kernel fcntl functionality, may have allowed a process belonging to a local unprivileged user to gain re-ordered access to the descriptor table. (CVE-2008-1669, Important) * the absence of a protection mechanism when attempting to access a critical section of code, as well as a race condition, have been found in the Linux kernel file system event notifier, dnotify. This could allow a local unprivileged user to get inconsistent data, or to send arbitrary signals to arbitrary system processes. (CVE-2008-1375, Important) Red Hat would like to thank Nick Piggin for responsibly disclosing the following issue: * when accessing kernel memory locations, certain Linux kernel drivers registering a fault handler did not perform required range checks. A local unprivileged user could use this flaw to gain read or write access to arbitrary kernel memory, or possibly cause a kernel crash. (CVE-2008-0007, Important) * a flaw was found when performing asynchronous input or output operations on a FIFO special file. A local unprivileged user could use this flaw to cause a kernel panic. (CVE-2007-5001, Important) * a flaw was found in the way core dump files were created. If a local user could get a root-owned process to dump a core file into a directory, which the user has write access to, they could gain read access to that core file. This could potentially grant unauthorized access to sensitive information. (CVE-2007-6206, Moderate) * a buffer overflow was found in the Linux kernel ISDN subsystem. A local unprivileged user could use this flaw to cause a denial of service. (CVE-2007-6151, Moderate) * a race condition found in the mincore system core could allow a local user to cause a denial of service (system hang). (CVE-2006-4814, Moderate) * it was discovered that the Linux kernel handled string operations in the opposite way to the GNU Compiler Collection (GCC). This could allow a local unprivileged user to cause memory corruption. (CVE-2008-1367, Low) As well, these updated packages fix the following bugs: * a bug, which caused long delays when unmounting mounts containing a large number of unused dentries, has been resolved. * in the previous kernel packages, the kernel was unable to handle certain floating point instructions on Itanium(R) architectures. * on certain Intel CPUs, the Translation Lookaside Buffer (TLB) was not flushed correctly, which caused machine check errors. Red Hat Enterprise Linux 3 users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues. 4. Solution: Before applying this update, make sure that all previously-released errata relevant to your system have been applied. This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at http://kbase.redhat.com/faq/FAQ_58_10188 5. Bugs fixed (http://bugzilla.redhat.com/): 306971 - CVE-2006-4814 kernel Race condition in mincore can cause "ps -ef" to hang 326251 - CVE-2007-5001 kernel asynchronous IO on a FIFO kernel panic 396861 - CVE-2007-6206 Issue with core dump owner 413731 - RHEL3: System hangs at unmount 425111 - CVE-2007-6151 I4L: fix isdn_ioctl memory issue 428961 - CVE-2008-0007 kernel: insufficient range checks in fault handlers with mremap 437312 - CVE-2008-1367 Kernel doesn't clear DF for signal handlers 439754 - CVE-2008-1375 kernel: race condition in dnotify (local DoS, local roothole possible) 443433 - CVE-2008-1669 kernel: add rcu_read_lock() to fcheck() in both dnotify, locks.c and fix fcntl store/load race in locks.c 6. Package List: Red Hat Enterprise Linux AS version 3: Source: ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/kernel-2.4.21-57.EL.src.rpm i386: kernel-2.4.21-57.EL.athlon.rpm kernel-2.4.21-57.EL.i686.rpm kernel-BOOT-2.4.21-57.EL.i386.rpm kernel-debuginfo-2.4.21-57.EL.athlon.rpm kernel-debuginfo-2.4.21-57.EL.i386.rpm kernel-debuginfo-2.4.21-57.EL.i686.rpm kernel-doc-2.4.21-57.EL.i386.rpm kernel-hugemem-2.4.21-57.EL.i686.rpm kernel-hugemem-unsupported-2.4.21-57.EL.i686.rpm kernel-smp-2.4.21-57.EL.athlon.rpm kernel-smp-2.4.21-57.EL.i686.rpm kernel-smp-unsupported-2.4.21-57.EL.athlon.rpm kernel-smp-unsupported-2.4.21-57.EL.i686.rpm kernel-source-2.4.21-57.EL.i386.rpm kernel-unsupported-2.4.21-57.EL.athlon.rpm kernel-unsupported-2.4.21-57.EL.i686.rpm ia64: kernel-2.4.21-57.EL.ia64.rpm kernel-debuginfo-2.4.21-57.EL.ia64.rpm kernel-doc-2.4.21-57.EL.ia64.rpm kernel-source-2.4.21-57.EL.ia64.rpm kernel-unsupported-2.4.21-57.EL.ia64.rpm ppc: kernel-2.4.21-57.EL.ppc64iseries.rpm kernel-2.4.21-57.EL.ppc64pseries.rpm kernel-debuginfo-2.4.21-57.EL.ppc64.rpm kernel-debuginfo-2.4.21-57.EL.ppc64iseries.rpm kernel-debuginfo-2.4.21-57.EL.ppc64pseries.rpm kernel-doc-2.4.21-57.EL.ppc64.rpm kernel-source-2.4.21-57.EL.ppc64.rpm kernel-unsupported-2.4.21-57.EL.ppc64iseries.rpm kernel-unsupported-2.4.21-57.EL.ppc64pseries.rpm s390: kernel-2.4.21-57.EL.s390.rpm kernel-debuginfo-2.4.21-57.EL.s390.rpm kernel-doc-2.4.21-57.EL.s390.rpm kernel-source-2.4.21-57.EL.s390.rpm kernel-unsupported-2.4.21-57.EL.s390.rpm s390x: kernel-2.4.21-57.EL.s390x.rpm kernel-debuginfo-2.4.21-57.EL.s390x.rpm kernel-doc-2.4.21-57.EL.s390x.rpm kernel-source-2.4.21-57.EL.s390x.rpm kernel-unsupported-2.4.21-57.EL.s390x.rpm x86_64: kernel-2.4.21-57.EL.ia32e.rpm kernel-2.4.21-57.EL.x86_64.rpm kernel-debuginfo-2.4.21-57.EL.ia32e.rpm kernel-debuginfo-2.4.21-57.EL.x86_64.rpm kernel-doc-2.4.21-57.EL.x86_64.rpm kernel-smp-2.4.21-57.EL.x86_64.rpm kernel-smp-unsupported-2.4.21-57.EL.x86_64.rpm kernel-source-2.4.21-57.EL.x86_64.rpm kernel-unsupported-2.4.21-57.EL.ia32e.rpm kernel-unsupported-2.4.21-57.EL.x86_64.rpm Red Hat Desktop version 3: Source: ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/kernel-2.4.21-57.EL.src.rpm i386: kernel-2.4.21-57.EL.athlon.rpm kernel-2.4.21-57.EL.i686.rpm kernel-BOOT-2.4.21-57.EL.i386.rpm kernel-debuginfo-2.4.21-57.EL.athlon.rpm kernel-debuginfo-2.4.21-57.EL.i386.rpm kernel-debuginfo-2.4.21-57.EL.i686.rpm kernel-doc-2.4.21-57.EL.i386.rpm kernel-hugemem-2.4.21-57.EL.i686.rpm kernel-hugemem-unsupported-2.4.21-57.EL.i686.rpm kernel-smp-2.4.21-57.EL.athlon.rpm kernel-smp-2.4.21-57.EL.i686.rpm kernel-smp-unsupported-2.4.21-57.EL.athlon.rpm kernel-smp-unsupported-2.4.21-57.EL.i686.rpm kernel-source-2.4.21-57.EL.i386.rpm kernel-unsupported-2.4.21-57.EL.athlon.rpm kernel-unsupported-2.4.21-57.EL.i686.rpm x86_64: kernel-2.4.21-57.EL.ia32e.rpm kernel-2.4.21-57.EL.x86_64.rpm kernel-debuginfo-2.4.21-57.EL.ia32e.rpm kernel-debuginfo-2.4.21-57.EL.x86_64.rpm kernel-doc-2.4.21-57.EL.x86_64.rpm kernel-smp-2.4.21-57.EL.x86_64.rpm kernel-smp-unsupported-2.4.21-57.EL.x86_64.rpm kernel-source-2.4.21-57.EL.x86_64.rpm kernel-unsupported-2.4.21-57.EL.ia32e.rpm kernel-unsupported-2.4.21-57.EL.x86_64.rpm Red Hat Enterprise Linux ES version 3: Source: ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/kernel-2.4.21-57.EL.src.rpm i386: kernel-2.4.21-57.EL.athlon.rpm kernel-2.4.21-57.EL.i686.rpm kernel-BOOT-2.4.21-57.EL.i386.rpm kernel-debuginfo-2.4.21-57.EL.athlon.rpm kernel-debuginfo-2.4.21-57.EL.i386.rpm kernel-debuginfo-2.4.21-57.EL.i686.rpm kernel-doc-2.4.21-57.EL.i386.rpm kernel-hugemem-2.4.21-57.EL.i686.rpm kernel-hugemem-unsupported-2.4.21-57.EL.i686.rpm kernel-smp-2.4.21-57.EL.athlon.rpm kernel-smp-2.4.21-57.EL.i686.rpm kernel-smp-unsupported-2.4.21-57.EL.athlon.rpm kernel-smp-unsupported-2.4.21-57.EL.i686.rpm kernel-source-2.4.21-57.EL.i386.rpm kernel-unsupported-2.4.21-57.EL.athlon.rpm kernel-unsupported-2.4.21-57.EL.i686.rpm ia64: kernel-2.4.21-57.EL.ia64.rpm kernel-debuginfo-2.4.21-57.EL.ia64.rpm kernel-doc-2.4.21-57.EL.ia64.rpm kernel-source-2.4.21-57.EL.ia64.rpm kernel-unsupported-2.4.21-57.EL.ia64.rpm x86_64: kernel-2.4.21-57.EL.ia32e.rpm kernel-2.4.21-57.EL.x86_64.rpm kernel-debuginfo-2.4.21-57.EL.ia32e.rpm kernel-debuginfo-2.4.21-57.EL.x86_64.rpm kernel-doc-2.4.21-57.EL.x86_64.rpm kernel-smp-2.4.21-57.EL.x86_64.rpm kernel-smp-unsupported-2.4.21-57.EL.x86_64.rpm kernel-source-2.4.21-57.EL.x86_64.rpm kernel-unsupported-2.4.21-57.EL.ia32e.rpm kernel-unsupported-2.4.21-57.EL.x86_64.rpm Red Hat Enterprise Linux WS version 3: Source: ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/kernel-2.4.21-57.EL.src.rpm i386: kernel-2.4.21-57.EL.athlon.rpm kernel-2.4.21-57.EL.i686.rpm kernel-BOOT-2.4.21-57.EL.i386.rpm kernel-debuginfo-2.4.21-57.EL.athlon.rpm kernel-debuginfo-2.4.21-57.EL.i386.rpm kernel-debuginfo-2.4.21-57.EL.i686.rpm kernel-doc-2.4.21-57.EL.i386.rpm kernel-hugemem-2.4.21-57.EL.i686.rpm kernel-hugemem-unsupported-2.4.21-57.EL.i686.rpm kernel-smp-2.4.21-57.EL.athlon.rpm kernel-smp-2.4.21-57.EL.i686.rpm kernel-smp-unsupported-2.4.21-57.EL.athlon.rpm kernel-smp-unsupported-2.4.21-57.EL.i686.rpm kernel-source-2.4.21-57.EL.i386.rpm kernel-unsupported-2.4.21-57.EL.athlon.rpm kernel-unsupported-2.4.21-57.EL.i686.rpm ia64: kernel-2.4.21-57.EL.ia64.rpm kernel-debuginfo-2.4.21-57.EL.ia64.rpm kernel-doc-2.4.21-57.EL.ia64.rpm kernel-source-2.4.21-57.EL.ia64.rpm kernel-unsupported-2.4.21-57.EL.ia64.rpm x86_64: kernel-2.4.21-57.EL.ia32e.rpm kernel-2.4.21-57.EL.x86_64.rpm kernel-debuginfo-2.4.21-57.EL.ia32e.rpm kernel-debuginfo-2.4.21-57.EL.x86_64.rpm kernel-doc-2.4.21-57.EL.x86_64.rpm kernel-smp-2.4.21-57.EL.x86_64.rpm kernel-smp-unsupported-2.4.21-57.EL.x86_64.rpm kernel-source-2.4.21-57.EL.x86_64.rpm kernel-unsupported-2.4.21-57.EL.ia32e.rpm kernel-unsupported-2.4.21-57.EL.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://www.redhat.com/security/team/key/#package 7. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4814 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5001 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6151 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6206 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0007 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1367 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1375 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1669 http://www.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2008 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFIIVShXlSAg2UNWIIRAgmSAKCRogfxBH0zKSSl0LoEU/mX2fM8HACgpUZp ku1MKisAK/HECsk5IhuieJo= =ld1g - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBSCJDJSh9+71yA2DNAQLFmAP+LzXWPjOTrQ7+F4Z8YsJ4i3sfox5EdtRc X2V3AiEET2C9XEKtyeg+TmDxmBAYeLJLnIdUsU5eFD+W6m9ubQpXPcDiFkBYRxZo QL8CyOpSgC7k11WYpSqAYYXfXJb30VILsh1FdtG4kLCVG/xW28qCpUYnKjVvqz+N Nut83B8HPUE= =CKkh -----END PGP SIGNATURE-----