From tabbott at ksplice.com Sat Oct 23 15:40:52 2010 From: tabbott at ksplice.com (Tim Abbott) Date: Sat, 23 Oct 2010 18:40:52 -0400 (EDT) Subject: [Ksplice][Ubuntu 9.04 Updates] New updates available via Ksplice (USN-1000-1) Message-ID: Synopsis: USN-1000-1 can now be patched using Ksplice CVEs: CVE-2009-4895 CVE-2010-2226 CVE-2010-2240 CVE-2010-2248 CVE-2010-2521 CVE-2010-2798 CVE-2010-2942 CVE-2010-2946 CVE-2010-2954 CVE-2010-2955 CVE-2010-2963 CVE-2010-3015 CVE-2010-3067 CVE-2010-3078 CVE-2010-3080 CVE-2010-3310 CVE-2010-3432 CVE-2010-3437 CVE-2010-3442 CVE-2010-3477 CVE-2010-3705 Systems running Ubuntu 9.04 Jaunty can now use Ksplice to patch against the latest Ubuntu Security Notice, USN-1000-1. INSTALLING THE UPDATES We recommend that all Ksplice Uptrack Ubuntu 9.04 Jaunty users install these updates. You can install these updates by running: # uptrack-upgrade -y DESCRIPTION * CVE-2009-4895: NULL pointer dereference in tty_fasync. A Race condition in the tty_fasync function allows local users to cause a NULL pointer dereference. * CVE-2010-2226: Read access to write-only files in XFS filesystem. A flaw was found in the handling of the SWAPEXT IOCTL in the Linux kernel XFS file system implementation. A local user could use this flaw to read write-only files, that they do not own, on an XFS file system. This could lead to unintended information disclosure. * CVE-2010-2248: Denial of service in CIFS with remote OS/2 server. When writing to a remote OS/2 server with the CIFS network filesystem, invalid data returned from the server may trigger a kernel BUG, leading to denial of service. * CVE-2010-2521: Remote buffer overflow in NFSv4 server. Buffer overflow flaws were found in the Linux kernel's implementation of the server-side External Data Representation (XDR) for the Network File System (NFS) version 4. An attacker on the local network could send a specially-crafted large compound request to the NFSv4 server, which could possibly result in a kernel panic (denial of service) or arbitrary code execution (CVE-2010-2521). * CVE-2010-2798: Denial of service in GFS2. Bob Peterson reported an issue in the GFS2 file system. A file system user could cause a denial of service (Oops) via certain rename operations. * CVE-2010-2942: Information leaks in traffic control dump structures. Incorrectly initialized structures in the traffic control dump code may allow the disclosure of 32 bits of kernel memory to userspace applications. * CVE-2010-2946: Access control bypass in JFS filesystem. Extended attribute namespace access rules may be bypassed by using the legacy-format os2 namespace. * CVE-2010-2954: NULL pointer dereference in irda subsystem. The irda_bind function in net/irda/af_irda.c in the Linux kernel did not properly handle a failure in the irda_open_tsap function. This allows local users to cause a denial of service (NULL pointer dereference and panic) via multiple unsuccessful calls to bind on an AF_IRDA (aka PF_IRDA) socket. * CVE-2010-2955: Information leak in wireless extensions. The cfg80211_wext_giwessid function in does not properly initialize certain structure members. A local user could leverage an off-by-one error in the ioctl_standard_iw_point function to obtain potentially sensitive information from kernel heap memory using an SIOCGIWESSID ioctl call that specifies a large buffer size. * CVE-2010-3015: Integer overflow in ext4 filesystem. An integer overflow flaw was found in the ext4_ext_get_blocks() function. This can trigger a BUG() on certain configurations of ext4 file systems. * CVE-2010-3067: Information leak in do_io_submit() An integer overflow error in the do_io_submit function could be used by userspace processes to read kernel memory. * CVE-2010-3078: Information leak in XFS_IOC_FSGETXATTR ioctl. The XFS_IOC_FSGETXATTR ioctl allowed unprivileged users to read 12 bytes of uninitialized stack memory, because the fsxattr struct declared on the stack in xfs_ioc_fsgetxattr() did not alter (or zero) the 12-byte fsx_pad member before copying it back to the user. * CVE-2010-3080: Privilege escalation in ALSA sound system OSS emulation. Tavis Ormandy reported an issue in the ALSA sequencer OSS emulation layer. Local users with sufficient privileges to open /dev/sequencer can cause a denial of service or privilege escalation via a NULL pointer dereference. * CVE-2010-3310: Integer signedness errors in rose driver. Multiple integer signedness errors in the rose driver allow local users to cause a denial of service (heap memory corruption) or possibly have unspecified other impact by calling rose_bind or rose_connect with a negative destination digis count. * CVE-2010-3432: Remote denial of service vulnerability in SCTP. The sctp_outq_flush() function can call sctp_packet_reset() on a packet structure that has already been filled with chunks. This resets the packet length but does not remove the chunks from the list; the SCTP code then re-initializes the packet, which because of the incorrect length could overflow the skb, resulting in a kernel panic. * CVE-2010-3437: Information leak in pktcdvd driver. An integer signedness error in the pkt_find_dev_from_minor function allows local users to obtain sensitive information from kernel memory or cause a denial of service (invalid pointer dereference and system crash) via a crafted index value in a PKT_CTRL_CMD_STATUS ioctl call. * CVE-2010-3442: Heap corruption vulnerability in ALSA core. The snd_ctl_new() function allocates space for a snd_kcontrol struct by performing arithmetic operations on a user-provided size without checking for integer overflow. This allows an unprivileged user to write an arbitrary value repeatedly past the bounds of this chunk, resulting in heap corruption. * CVE-2010-3477: Kernel information leak in act_police. Incorrectly initialized structures in the traffic control dump code may allow the disclosure of kernel memory to userspace applications. This is a similar issue to CVE-2010-2942. * CVE-2010-3705: Remote memory corruption in SCTP HMAC handling. The SCTP subsystem's sctp_asoc_get_hmac function did not correctly check for an out of range value for the last id in the hmac_ids array, potentially resulting in kernel memory corrptuon. * CVE-2010-2963: Privilege escalation in V4L 32-bit compat support. Kees Cook discovered that the V4L1 32bit compat interface did not correctly validate certain parameters. A local attacker on a 64bit system with access to a video device could exploit this to gain root privileges. * Fix mlock regression introduced by CVE-2010-2240 fix. The upstream patch for CVE-2010-2240 introduced a possible kernel crash when privileged applications use mlock on portions of the kernel stack. SUPPORT Ksplice support is available at support at ksplice.com or +1 765-577-5423.