Update to Linux kernel verion 2.6.24.6, 2.6.24.7:
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.24.6 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.24.7 Security fixes: CVE-2008-1375 (2.6.24.6) - dnotify/close race CVE-2008-1675 (2.6.24.6)

  - tehuti driver permissions and register size check issues     CVE-2008-1669 (2.6.24.7) - SMP ordering hole in     fcntl_setlk() Wireless driver bug fixes. Fix access     permissions on /proc/kcore (#241362) Re-enable machine     check exception handler.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

A vulnerability was discovered and corrected in the Linux 2.6 kernel :

The bdx_ioctl_priv function in the tehuti driver (tehuti.c) in Linux kernel 2.6.x before 2.6.25.1 does not properly check certain information related to register size, which has unspecified impact and local attack vectors, probably related to reading or writing kernel memory. (CVE-2008-1675)

Additionaly, some fixes were made, related to: iwlwifi (small bug interacting with drakconnect interface detection), brightness handling on EeePc, uvcvideo on Thinkpad X300, sound for TOSHIBA Satellite Pro A200 and A210, RealTek 8169 ethernet, unionfs, and more.

To update your kernel, please follow the directions located at :

http://www.mandriva.com/en/security/kernelupdate

It was discovered that PowerPC kernels did not correctly handle reporting certain system details. By requesting a specific set of information, a local attacker could cause a system crash resulting in a denial of service. (CVE-2007-6694)

A race condition was discovered between dnotify fcntl() and close() in the kernel. If a local attacker performed malicious dnotify requests, they could cause memory consumption leading to a denial of service, or possibly send arbitrary signals to any process. (CVE-2008-1375)

On SMP systems, a race condition existed in fcntl(). Local attackers could perform malicious locks, causing system crashes and leading to a denial of service. (CVE-2008-1669)

The tehuti network driver did not correctly handle certain IO functions. A local attacker could perform malicious requests to the driver, potentially accessing kernel memory, leading to privilege escalation or access to private system information. (CVE-2008-1675).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Some vulnerabilities were discovered and corrected in the Linux 2.6 kernel :

Memory leak in the ipip6_rcv function in net/ipv6/sit.c in the Linux kernel before 2.6.25.3 allows remote attackers to cause a denial of service (memory consumption) via network traffic to a Simple Internet Transition (SIT) tunnel interface, related to the pskb_may_pull and kfree_skb functions, and management of an skb reference count.
(CVE-2008-2136)

The utimensat system call (sys_utimensat) in Linux kernel 2.6.22 and other versions before 2.6.25.3 does not check file permissions when certain UTIME_NOW and UTIME_OMIT combinations are used, which allows local users to modify file times of arbitrary files, possibly leading to a denial of service. (CVE-2008-2148)

Integer overflow in the dccp_feat_change function in net/dccp/feat.c in the Datagram Congestion Control Protocol (DCCP) subsystem in the Linux kernel 2.6.18, and 2.6.17 through 2.6.20, allows local users to gain privileges via an invalid feature length, which leads to a heap-based buffer overflow. (CVE-2008-2358)

The pppol2tp_recvmsg function in drivers/net/pppol2tp.c in the Linux kernel 2.6 before 2.6.26-rc6 allows remote attackers to cause a denial of service (kernel heap memory corruption and system crash) and possibly have unspecified other impact via a crafted PPPOL2TP packet that results in a large value for a certain length variable.
(CVE-2008-2750)

Linux kernel 2.6.18, and possibly other versions, when running on AMD64 architectures, allows local users to cause a denial of service (crash) via certain ptrace calls. (CVE-2008-1615)

Integer overflow in the sctp_getsockopt_local_addrs_old function in net/sctp/socket.c in the Stream Control Transmission Protocol (sctp) functionality in the Linux kernel before 2.6.25.9 allows local users to cause a denial of service (resource consumption and system outage) via vectors involving a large addr_num field in an sctp_getaddrs_old data structure. (CVE-2008-2826)

Race condition in the directory notification subsystem (dnotify) in Linux kernel 2.6.x before 2.6.24.6, and 2.6.25 before 2.6.25.1, allows local users to cause a denial of service (OOPS) and possibly gain privileges via unspecified vectors. (CVE-2008-1375)

The bdx_ioctl_priv function in the tehuti driver (tehuti.c) in Linux kernel 2.6.x before 2.6.25.1 does not properly check certain information related to register size, which has unspecified impact and local attack vectors, probably related to reading or writing kernel memory. (CVE-2008-1675)

Linux kernel before 2.6.25.2 does not apply a certain protection mechanism for fcntl functionality, which allows local users to (1) execute code in parallel or (2) exploit a race condition to obtain re-ordered access to the descriptor table. (CVE-2008-1669)

Additionaly, a number of fixes has been included for the rtc driver, Arima W651DI audio chipset, unionfs, as well as Tomoyolinux has been updated to 1.6.3, UDF 2.50 support was added, and a few things more.
Check the package changelog for more details.

To update your kernel, please follow the directions located at :

http://www.mandriva.com/en/security/kernelupdate

ID	名稱	產品	系列	已發布	已更新	嚴重性
32335	Fedora 8 : kernel-2.6.24.7-92.fc8 (2008-3873)	Nessus	Fedora Local Security Checks	2008/5/16	2021/1/11	high
36342	Mandriva Linux Security Advisory : kernel (MDVSA-2008:109)	Nessus	Mandriva Local Security Checks	2009/4/23	2021/1/6	high
33093	Ubuntu 8.04 LTS : linux vulnerabilities (USN-614-1)	Nessus	Ubuntu Local Security Checks	2008/6/4	2021/1/19	high
36653	Mandriva Linux Security Advisory : kernel (MDVSA-2008:167)	Nessus	Mandriva Local Security Checks	2009/4/23	2021/1/6	high

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