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

  - CVE-2008-3528     Eugene Teo reported a local DoS issue in the ext2 and     ext3 filesystems. Local users who have been granted the     privileges necessary to mount a filesystem would be able     to craft a corrupted filesystem that causes the kernel     to output error messages in an infinite loop.

  - CVE-2008-4554     Milos Szeredi reported that the usage of splice() on     files opened with O_APPEND allows users to write to the     file at arbitrary offsets, enabling a bypass of possible     assumed semantics of the O_APPEND flag.

  - CVE-2008-4576     Vlad Yasevich reported an issue in the SCTP subsystem     that may allow remote users to cause a local DoS by     triggering a kernel oops.

  - CVE-2008-4618     Wei Yongjun reported an issue in the SCTP subsystem that     may allow remote users to cause a local DoS by     triggering a kernel panic.

  - CVE-2008-4933     Eric Sesterhenn reported a local DoS issue in the     hfsplus filesystem. Local users who have been granted     the privileges necessary to mount a filesystem would be     able to craft a corrupted filesystem that causes the     kernel to overrun a buffer, resulting in a system oops     or memory corruption.

  - CVE-2008-4934     Eric Sesterhenn reported a local DoS issue in the     hfsplus filesystem. Local users who have been granted     the privileges necessary to mount a filesystem would be     able to craft a corrupted filesystem that results in a     kernel oops due to an unchecked return value.

  - CVE-2008-5025     Eric Sesterhenn reported a local DoS issue in the hfs     filesystem. Local users who have been granted the     privileges necessary to mount a filesystem would be able     to craft a filesystem with a corrupted catalog name     length, resulting in a system oops or memory corruption.

  - CVE-2008-5029     Andrea Bittau reported a DoS issue in the unix socket     subsystem that allows a local user to cause memory     corruption, resulting in a kernel panic.

  - CVE-2008-5134     Johannes Berg reported a remote DoS issue in the     libertas wireless driver, which can be triggered by a     specially crafted beacon/probe response.

  - CVE-2008-5182     Al Viro reported race conditions in the inotify     subsystem that may allow local users to acquire elevated     privileges.

  - CVE-2008-5300     Dann Frazier reported a DoS condition that allows local     users to cause the out of memory handler to kill off     privileged processes or trigger soft lockups due to a     starvation issue in the unix socket subsystem.

Hugo Dias discovered that the ATM subsystem did not correctly manage socket counts. A local attacker could exploit this to cause a system hang, leading to a denial of service. (CVE-2008-5079)

It was discovered that the libertas wireless driver did not correctly handle beacon and probe responses. A physically near-by attacker could generate specially crafted wireless network traffic and cause a denial of service. Ubuntu 6.06 was not affected. (CVE-2008-5134)

It was discovered that the inotify subsystem contained watch removal race conditions. A local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2008-5182)

Dann Frazier discovered that in certain situations sendmsg did not correctly release allocated memory. A local attacker could exploit this to force the system to run out of free memory, leading to a denial of service. Ubuntu 6.06 was not affected. (CVE-2008-5300)

It was discovered that the ATA subsystem did not correctly set timeouts. A local attacker could exploit this to cause a system hang, leading to a denial of service. (CVE-2008-5700)

It was discovered that the ib700 watchdog timer did not correctly check buffer sizes. A local attacker could send a specially crafted ioctl to the device to cause a system crash, leading to a denial of service. (CVE-2008-5702)

It was discovered that in certain situations the network scheduler did not correctly handle very large levels of traffic. A local attacker could produce a high volume of UDP traffic resulting in a system hang, leading to a denial of service. Ubuntu 8.04 was not affected.
(CVE-2008-5713).

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.

The openSUSE 10.3 kernel was updated to fix various security problems and bugs. Following security bugs were fixed :

CVE-2008-5702: Buffer underflow in the ibwdt_ioctl function in drivers/watchdog/ib700wdt.c might allow local users to have an unknown impact via a certain /dev/watchdog WDIOC_SETTIMEOUT IOCTL call.

CVE-2008-5079: net/atm/svc.c in the ATM subsystem allowed local users to cause a denial of service (kernel infinite loop) by making two calls to svc_listen for the same socket, and then reading a /proc/net/atm/*vc file, related to corruption of the vcc table.

CVE-2008-5029: The __scm_destroy function in net/core/scm.c makes indirect recursive calls to itself through calls to the fput function, which allows local users to cause a denial of service (panic) via vectors related to sending an SCM_RIGHTS message through a UNIX domain socket and closing file descriptors.

CVE-2008-5134: Buffer overflow in the lbs_process_bss function in drivers/net/wireless/libertas/scan.c in the libertas subsystem allowed remote attackers to have an unknown impact via an 'invalid beacon/probe response.'

CVE-2008-4933: Buffer overflow in the hfsplus_find_cat function in fs/hfsplus/catalog.c allowed attackers to cause a denial of service (memory corruption or system crash) via an hfsplus filesystem image with an invalid catalog namelength field, related to the hfsplus_cat_build_key_uni function.

CVE-2008-5025: Stack-based buffer overflow in the hfs_cat_find_brec function in fs/hfs/catalog.c allowed attackers to cause a denial of service (memory corruption or system crash) via an hfs filesystem image with an invalid catalog namelength field, a related issue to CVE-2008-4933.

CVE-2008-5182: The inotify functionality might allow local users to gain privileges via unknown vectors related to race conditions in inotify watch removal and umount.

ID	名稱	產品	系列	已發布	已更新	嚴重性
35036	Debian DSA-1681-1 : linux-2.6.24 - denial of service/privilege escalation	Nessus	Debian Local Security Checks	2008/12/5	2021/1/4	critical
36454	Ubuntu 6.06 LTS / 7.10 / 8.04 LTS : linux-source-2.6.15/22, linux vulnerabilities (USN-714-1)	Nessus	Ubuntu Local Security Checks	2009/4/23	2021/1/19	critical
35446	openSUSE 10 Security Update : kernel (kernel-5920)	Nessus	SuSE Local Security Checks	2009/1/22	2021/1/14	critical

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