SuSE 11 Security Update : Linux kernel (SAT Patch Numbers 927 / 929 / 930)


The Linux kernel on SUSE Linux Enterprise 11 was updated to and received lots of bugs and security fixes. The following security issues have been fixed : - Buffer overflow in fs/cifs/connect.c in CIFS in the Linux kernel 2.6.29 and earlier allows remote attackers to cause a denial of service (crash) or potential code execution via a long nativeFileSystem field in a Tree Connect response to an SMB mount request. (CVE-2009-1439) This requires that kernel can be made to mount a 'cifs' filesystem from a malicious CIFS server. - The exit_notify function in kernel/exit.c in the Linux kernel did not restrict exit signals when the CAP_KILL capability is held, which allows local users to send an arbitrary signal to a process by running a program that modifies the exit_signal field and then uses an exec system call to launch a setuid application. (CVE-2009-1337) The GCC option -fwrapv has been added to compilation to work around potentially removing integer overflow checks. - Integer overflow in rose_sendmsg (sys/net/af_rose.c) in the Linux kernel might allow attackers to obtain sensitive information via a large length value, which causes 'garbage' memory to be sent. (CVE-2009-1265) - The vmx_set_msr function in arch/x86/kvm/vmx.c in the VMX implementation in the KVM subsystem in the Linux kernel on the i386 platform allows guest OS users to cause a denial of service (OOPS) by setting the EFER_LME (aka 'Long mode enable') bit in the Extended Feature Enable Register (EFER) model-specific register, which is specific to the x86_64 platform. (CVE-2009-1242) - The __inet6_check_established function in net/ipv6/inet6_hashtables.c in the Linux kernel, when Network Namespace Support (aka NET_NS) is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via vectors involving IPv6 packets. (CVE-2009-1360) - drivers/char/agp/generic.c in the agp subsystem in the Linux kernel does not zero out pages that may later be available to a user-space process, which allows local users to obtain sensitive information by reading these pages. (CVE-2009-1192) Additionaly a lot of bugs have been fixed and are listed in the RPM changelog.