kernel Linux Kernel security update. Linux Kernel security update. This kernel update fixes various bugs and also several security issues: CVE-2008-4576: Fixed a crash in SCTP INIT-ACK, on mismatch between SCTP AUTH availability. This might be exploited remotely for a denial of service (crash) attack. CVE-2008-3833: The generic_file_splice_write function in fs/splice.c in the Linux kernel does not properly strip setuid and setgid bits when there is a write to a file, which allows local users to gain the privileges of a different group, and obtain sensitive information or possibly have unspecified other impact, by splicing into an inode in order to create an executable file in a setgid directory. CVE-2008-4210: fs/open.c in the Linux kernel before 2.6.22 does not properly strip setuid and setgid bits when there is a write to a file, which allows local users to gain the privileges of a different group, and obtain sensitive information or possibly have unspecified other impact, by creating an executable file in a setgid directory through the (1) truncate or (2) ftruncate function in conjunction with memory-mapped I/O. CVE-2008-4302: fs/splice.c in the splice subsystem in the Linux kernel before 2.6.22.2 does not properly handle a failure of the add_to_page_cache_lru function, and subsequently attempts to unlock a page that was not locked, which allows local users to cause a denial of service (kernel BUG and system crash), as demonstrated by the fio I/O tool. CVE-2008-3528: The ext[234] filesystem code fails to properly handle corrupted data structures. With a mounted filesystem image or partition that have corrupted dir->i_size and dir->i_blocks, a user performing either a read or write operation on the mounted image or partition can lead to a possible denial of service by spamming the logfile. CVE-2007-6716: fs/direct-io.c in the dio subsystem in the Linux kernel did not properly zero out the dio struct, which allows local users to cause a denial of service (OOPS), as demonstrated by a certain fio test. CVE-2008-3525: Added missing capability checks in sbni_ioctl(). CVE-2008-3272: Fixed range checking in the snd_seq OSS ioctl, which could be used to leak information from the kernel. CVE-2008-2931: 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-2008-2812: 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-2008-1673: Added range checking in ASN.1 handling for the CIFS and SNMP NAT netfilter modules. CVE-2008-3527: arch/i386/kernel/sysenter.c in the Virtual Dynamic Shared Objects (vDSO) implementation in the Linux kernel before 2.6.21 did not properly check boundaries, which allows local users to gain privileges or cause a denial of service via unspecified vectors, related to the install_special_mapping, syscall, and syscall32_nopage functions. This kernel update fixes various bugs and also several security issues: CVE-2008-4576: Fixed a crash in SCTP INIT-ACK, on mismatch between SCTP AUTH availability. This might be exploited remotely for a denial of service (crash) attack. CVE-2008-3833: The generic_file_splice_write function in fs/splice.c in the Linux kernel does not properly strip setuid and setgid bits when there is a write to a file, which allows local users to gain the privileges of a different group, and obtain sensitive information or possibly have unspecified other impact, by splicing into an inode in order to create an executable file in a setgid directory. CVE-2008-4210: fs/open.c in the Linux kernel before 2.6.22 does not properly strip setuid and setgid bits when there is a write to a file, which allows local users to gain the privileges of a different group, and obtain sensitive information or possibly have unspecified other impact, by creating an executable file in a setgid directory through the (1) truncate or (2) ftruncate function in conjunction with memory-mapped I/O. CVE-2008-4302: fs/splice.c in the splice subsystem in the Linux kernel before 2.6.22.2 does not properly handle a failure of the add_to_page_cache_lru function, and subsequently attempts to unlock a page that was not locked, which allows local users to cause a denial of service (kernel BUG and system crash), as demonstrated by the fio I/O tool. CVE-2008-3528: The ext[234] filesystem code fails to properly handle corrupted data structures. With a mounted filesystem image or partition that have corrupted dir->i_size and dir->i_blocks, a user performing either a read or write operation on the mounted image or partition can lead to a possible denial of service by spamming the logfile. CVE-2007-6716: fs/direct-io.c in the dio subsystem in the Linux kernel did not properly zero out the dio struct, which allows local users to cause a denial of service (OOPS), as demonstrated by a certain fio test. CVE-2008-3525: Added missing capability checks in sbni_ioctl(). CVE-2008-3272: Fixed range checking in the snd_seq OSS ioctl, which could be used to leak information from the kernel. CVE-2008-2931: 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-2008-2812: 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-2008-1673: Added range checking in ASN.1 handling for the CIFS and SNMP NAT netfilter modules. CVE-2008-3527: arch/i386/kernel/sysenter.c in the Virtual Dynamic Shared Objects (vDSO) implementation in the Linux kernel before 2.6.21 did not properly check boundaries, which allows local users to gain privileges or cause a denial of service via unspecified vectors, related to the install_special_mapping, syscall, and syscall32_nopage functions. security This update can be used to install a new kernel. If you decide to use the kernel update, we recommend that you reboot your system upon completion of the YaST Online Update, as additional kernel modules may be needed which can only be loaded after the system is rebooted. kernel-bigsmp i586 7f3a5537aad93e76e232423a1d79b95652c8d1f1 kernel-default i586 65361fecb8a373c6d0439bd44ed952f2740394ec kernel-default ppc cd731a630ad3ed3bbf318d7d79df58f215cc4404 kernel-default x86_64 f4d2402b3334034cba6ac93f1ba002ba6c239145 kernel-iseries64 ppc 6b786e4fa417bfa60bbffe2e5c4c117667228760 kernel-kdump i586 8b038efebaa40059ac69304b9af2b858fbdadb40 kernel-kdump ppc e99c57ebe16e7caa7b0b867b2b69bc2bd84b48c5 kernel-kdump x86_64 b951981a7a94489ae4b605d1a9c3631382121f14 kernel-ppc64 ppc 9eccc2d9a63793a868386162f527d1e98cfabd4e kernel-source i586 1ff58844590fc42d42844018b6e098aa557ee77c kernel-source ppc 49efd2eb05355a2fb9625968e4f112b18d8a0f36 kernel-source x86_64 b5fb5049dbe8e3a0718f0403be4ac4dae2d979ad kernel-syms i586 0daeff53c4ddbd897c47b4c1d01c1e226369f8a5 kernel-syms ppc 666a004598d12c1bebef8f8a3541fe25b8f59608 kernel-syms x86_64 aa2294234d36bb4fcd2ee0c7e07cbecfa126c903 kernel-xen i586 d4d24473f557f3eb0aa8ad33cab7842a1edd8f7b kernel-xen x86_64 5443630b82b294f8504aedeb0fbec01be9ce8eb4 kernel-xenpae i586 ef2c7070ad390d2ef18cc4a19e00beffae70b447