This update of the SUSE Linux Enterprise 10 Service Pack 1 kernel contains lots of bugfixes and several security fixes :

  - Added missing capability checks in sbni_ioctl().
    (CVE-2008-3525)

  - On AMD64 some string operations could leak kernel     information into userspace. (CVE-2008-0598)

  - Added range checking in ASN.1 handling for the CIFS and     SNMP NAT netfilter modules. (CVE-2008-1673)

  - Fixed range checking in the snd_seq OSS ioctl, which     could be used to leak information from the kernel.
    (CVE-2008-3272)

  - Fixed a memory leak when looking up deleted directories     which could be used to run the system out of memory.
    (CVE-2008-3275)

  - The do_change_type function in fs/namespace.c did not     verify that the caller has the CAP_SYS_ADMIN capability,     which allows local users to gain privileges or cause a     denial of service by modifying the properties of a     mountpoint. (CVE-2008-2931)

  - Various NULL ptr checks have been added to tty op     functions, which might have been used by local attackers     to execute code. We think that this affects only devices     openable by root, so the impact is limited.
    (CVE-2008-2812)

Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or arbitrary code execution. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2007-6282     Dirk Nehring discovered a vulnerability in the IPsec     code that allows remote users to cause a denial of     service by sending a specially crafted ESP packet.

  - CVE-2008-0598     Tavis Ormandy discovered a vulnerability that allows     local users to access uninitialized kernel memory,     possibly leaking sensitive data. This issue is specific     to the amd64-flavour kernel images.

  - CVE-2008-2729     Andi Kleen discovered an issue where uninitialized     kernel memory was being leaked to userspace during an     exception. This issue may allow local users to gain     access to sensitive data. Only the amd64-flavour Debian     kernel images are affected.

  - CVE-2008-2812     Alan Cox discovered an issue in multiple tty drivers     that allows local users to trigger a denial of service     (NULL pointer dereference) and possibly obtain elevated     privileges.

  - CVE-2008-2826     Gabriel Campana discovered an integer overflow in the     sctp code that can be exploited by local users to cause     a denial of service.

  - CVE-2008-2931     Miklos Szeredi reported a missing privilege check in the     do_change_type() function. This allows local,     unprivileged users to change the properties of mount     points.

  - CVE-2008-3272     Tobias Klein reported a locally exploitable data leak in     the snd_seq_oss_synth_make_info() function. This may     allow local users to gain access to sensitive     information.

  - CVE-2008-3275     Zoltan Sogor discovered a coding error in the VFS that     allows local users to exploit a kernel memory leak     resulting in a denial of service.

Updated kernel packages that fix various security issues and several bugs are now available for Red Hat Enterprise Linux 5.

This update has been rated as having important security impact by the Red Hat Security Response Team.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

These updated packages fix the following security issues :

* a possible kernel memory leak was found in the Linux kernel Simple Internet Transition (SIT) INET6 implementation. This could allow a local unprivileged user to cause a denial of service. (CVE-2008-2136, Important)

* a flaw was found in the Linux kernel setrlimit system call, when setting RLIMIT_CPU to a certain value. This could allow a local unprivileged user to bypass the CPU time limit. (CVE-2008-1294, Moderate)

* multiple NULL pointer dereferences were found in various Linux kernel network drivers. These drivers were missing checks for terminal validity, which could allow privilege escalation. (CVE-2008-2812, Moderate)

These updated packages fix the following bugs :

* the GNU libc stub resolver is a minimal resolver that works with Domain Name System (DNS) servers to satisfy requests from applications for names. The GNU libc stub resolver did not specify a source UDP port, and therefore used predictable port numbers. This could have made DNS spoofing attacks easier.

The Linux kernel has been updated to implement random UDP source ports where none are specified by an application. This allows applications, such as those using the GNU libc stub resolver, to use random UDP source ports, helping to make DNS spoofing attacks harder.

* when using certain hardware, a bug in UART_BUG_TXEN may have caused incorrect hardware detection, causing data flow to '/dev/ttyS1' to hang.

* a 50-75% drop in NFS server rewrite performance, compared to Red Hat Enterprise Linux 4.6, has been resolved.

* due a bug in the fast userspace mutex code, while one thread fetched a pointer, another thread may have removed it, causing the first thread to fetch the wrong pointer, possibly causing a system crash.

* on certain Hitachi hardware, removing the 'uhci_hcd' module caused a kernel oops, and the following error :

BUG: warning at arch/ia64/kernel/iosapic.c:1001/iosapic_unregister_intr()

Even after the 'uhci_hcd' module was reloaded, there was no access to USB devices. As well, on systems that have legacy interrupts, 'acpi_unregister_gsi' incorrectly called 'iosapci_unregister_intr()', causing warning messages to be logged.

* when a page was mapped with mmap(), and 'PROT_WRITE' was the only 'prot' argument, the first read of that page caused a segmentation fault. If the page was read after it was written to, no fault occurred. This was incompatible with the Red Hat Enterprise Linux 4 behavior.

* due to a NULL pointer dereference in powernowk8_init(), a panic may have occurred.

* certain error conditions handled by the bonding sysfs interface could have left rtnl_lock() unbalanced, either by locking and returning without unlocking, or by unlocking when it did not lock, possibly causing a 'kernel: RTNL: assertion failed at net/core/fib_rules.c' error.

* the kernel currently expects a maximum of six Machine Check Exception (MCE) banks to be exposed by a CPU. Certain CPUs have 7 or more, which may have caused the MCE to be incorrectly reported.

* a race condition in UNIX domain sockets may have caused recv() to return zero. For clusters, this may have caused unexpected failovers.

* msgrcv() frequently returned an incorrect 'ERESTARTNOHAND (514)' error number.

* on certain Intel Itanium-based systems, when kdump was configured to halt the system after a dump operation, after the 'System halted.' output, the kernel continued to output endless 'soft lockup' messages.

Red Hat Enterprise Linux 5 users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
34331	SuSE 10 Security Update : the Linux Kernel (x86) (ZYPP Patch Number 5566)	Nessus	SuSE Local Security Checks	2008/10/2	2021/1/14	critical
34032	Debian DSA-1630-1 : linux-2.6 - denial of service/information leak	Nessus	Debian Local Security Checks	2008/8/24	2021/1/4	high
43701	CentOS 5 : kernel (CESA-2008:0612)	Nessus	CentOS Local Security Checks	2010/1/6	2021/1/4	high

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