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Scientific Linux Security Update : kernel on SL4.x i386/x86_64

Description

- a flaw was found in the Linux kernel's Direct-IO implementation. This could have allowed a local unprivileged user to cause a denial of service. (CVE-2007-6716, Important) - when running ptrace in 31-bit mode on an IBM S/390 or IBM System z kernel, a local unprivileged user could cause a denial of service by reading from or writing into a padding area in the user_regs_struct32 structure. (CVE-2008-1514, Important) - the do_truncate() and generic_file_splice_write() functions did not clear the setuid and setgid bits. This could have allowed a local unprivileged user to obtain access to privileged information. (CVE-2008-4210, Important) - Tobias Klein reported a missing check in the Linux kernel's Open Sound System (OSS) implementation. This deficiency could have led to an information leak. (CVE-2008-3272, Moderate) - a potential denial of service attack was discovered in the Linux kernel's PWC USB video driver. A local unprivileged user could have used this flaw to bring the kernel USB subsystem into the busy-waiting state. (CVE-2007-5093, Low) - the ext2 and ext3 file systems code failed to properly handle corrupted data structures, leading to a possible local denial of service issue when read or write operations were performed. (CVE-2008-3528, Low) In addition, these updated packages fix the following bugs : - when using the CIFS 'forcedirectio' option, appending to an open file on a CIFS share resulted in that file being overwritten with the data to be appended. - a kernel panic occurred when a device with PCI ID 8086:10c8 was present on a system with a loaded ixgbe driver. - due to an aacraid driver regression, the kernel failed to boot when trying to load the aacraid driver and printed the following error message: 'aac_srb: aac_fib_send failed with status: 8195'. - due to an mpt driver regression, when RAID 1 was configured on Primergy systems with an LSI SCSI IME 53C1020/1030 controller, the kernel panicked during boot. - the mpt driver produced a large number of extraneous debugging messages when performing a 'Host reset' operation. - due to a regression in the sym driver, the kernel panicked when a SCSI hot swap was performed using MCP18 hardware. - all cores on a multi-core system now scale their frequencies in accordance with the policy set by the system's CPU frequency governor. - the netdump subsystem suffered from several stability issues. These are addressed in this updated kernel. - under certain conditions, the ext3 file system reported a negative count of used blocks. - reading /proc/self/mem incorrectly returned 'Invalid argument' instead of 'input/output error' due to a regression. - under certain conditions, the kernel panicked when a USB device was removed while the system was busy accessing the device. - a race condition in the kernel could have led to a kernel crash during the creation of a new process.


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