CVE-2015-7613

The SUSE Linux Enterprise 12 kernel was updated to 3.12.48-52.27 to receive various security and bugfixes.

Following security bugs were fixed:

• CVE-2015-7613: A flaw was found in the Linux kernel IPC code that could lead to arbitrary code execution. The ipc_addid() function initialized a shared object that has unset uid/gid values. Since the fields are not initialized, the check can falsely succeed. (bsc#948536)
• CVE-2015-5156: When a guests KVM network devices is in a bridge configuration the kernel can create a situation in which packets are fragmented in an unexpected fashion. The GRO functionality can create a situation in which multiple SKB's are chained together in a single packets fraglist (by design). (bsc#940776)
• CVE-2015-5157: arch/x86/entry/entry_64.S in the Linux kernel before 4.1.6 on the x86_64 platform mishandles IRET faults in processing NMIs that occurred during userspace execution, which might allow local users to gain privileges by triggering an NMI (bsc#938706).
• CVE-2015-6252: A flaw was found in the way the Linux kernel's vhost driver treated userspace provided log file descriptor when processing the VHOST_SET_LOG_FD ioctl command. The file descriptor was never released and continued to consume kernel memory. A privileged local user with access to the /dev/vhost-net files could use this flaw to create a denial-of-service attack (bsc#942367).
• CVE-2015-5697: The get_bitmap_file function in drivers/md/md.c in the Linux kernel before 4.1.6 does not initialize a certain bitmap data structure, which allows local users to obtain sensitive information from kernel memory via a GET_BITMAP_FILE ioctl call. (bnc#939994)
• CVE-2015-6937: A NULL pointer dereference flaw was found in the Reliable Datagram Sockets (RDS) implementation allowing a local user to cause system DoS. A verification was missing that the underlying transport exists when a connection was created. (bsc#945825)
• CVE-2015-5283: A NULL pointer dereference flaw was found in SCTP implementation allowing a local user to cause system DoS. Creation of multiple sockets in parallel when system doesn't have SCTP module loaded can lead to kernel panic. (bsc#947155)

The following non-security bugs were fixed:

• ALSA: hda - Abort the probe without i915 binding for HSW/BDW (bsc#936556).
• Btrfs: Backport subvolume mount option handling (bsc#934962)
• Btrfs: Handle unaligned length in extent_same (bsc#937609).
• Btrfs: advertise which crc32c implementation is being used on mount (bsc#946057).
• Btrfs: allow mounting btrfs subvolumes with different ro/rw options.
• Btrfs: check if previous transaction aborted to avoid fs corruption (bnc#942509).
• Btrfs: clean up error handling in mount_subvol() (bsc#934962).
• Btrfs: cleanup orphans while looking up default subvolume (bsc#914818).
• Btrfs: do not update mtime/ctime on deduped inodes (bsc#937616).
• Btrfs: fail on mismatched subvol and subvolid mount options (bsc#934962).
• Btrfs: fix chunk allocation regression leading to transaction abort (bnc#938550).
• Btrfs: fix clone / extent-same deadlocks (bsc#937612).
• Btrfs: fix crash on close_ctree() if cleaner starts new transaction (bnc#938891).
• Btrfs: fix deadlock with extent-same and readpage (bsc#937612).
• Btrfs: fix file corruption after cloning inline extents (bnc#942512).
• Btrfs: fix file read corruption after extent cloning and fsync (bnc#946902).
• Btrfs: fix find_free_dev_extent() malfunction in case device tree has hole (bnc#938550).
• Btrfs: fix hang when failing to submit bio of directIO (bnc#942685).
• Btrfs: fix list transaction->pending_ordered corruption (bnc#938893).
• Btrfs: fix memory corruption on failure to submit bio for direct IO (bnc#942685).
• Btrfs: fix memory leak in the extent_same ioctl (bsc#937613).
• Btrfs: fix put dio bio twice when we submit dio bio fail (bnc#942685).
• Btrfs: fix race between balance and unused block group deletion (bnc#938892). -…

This kernel live patch for Linux Kernel 3.12.43-52.6.1 fixes two security issues:

• CVE-2015-7613: A race condition in the IPC object implementation in the Linux kernel allowed local users to gain privileges by triggering an ipc_addid call that leads to uid and gid comparisons against uninitialized data, related to msg.c, shm.c, and util.c. (bsc#948701 bsc#948536)
• CVE-2015-5707: Integer overflow in the sg_start_req function in drivers/scsi/sg.c in the Linux kernel allowed local users to cause a denial of service or possibly have unspecified other impact via a large iov_count value in a write request. (bsc#940342 bsc#940338)

This kernel live patch for Linux Kernel 3.12.39-47.1 fixes two security issues:

• CVE-2015-7613: A race condition in the IPC object implementation in the Linux kernel allowed local users to gain privileges by triggering an ipc_addid call that leads to uid and gid comparisons against uninitialized data, related to msg.c, shm.c, and util.c. (bsc#948701 bsc#948536)
• CVE-2015-5707: Integer overflow in the sg_start_req function in drivers/scsi/sg.c in the Linux kernel allowed local users to cause a denial of service or possibly have unspecified other impact via a large iov_count value in a write request. (bsc#940342 bsc#940338)

This kernel live patch for Linux Kernel 3.12.44-52.18.1 fixes two security issues:

• CVE-2015-7613: A race condition in the IPC object implementation in the Linux kernel allowed local users to gain privileges by triggering an ipc_addid call that leads to uid and gid comparisons against uninitialized data, related to msg.c, shm.c, and util.c. (bsc#948701 bsc#948536)
• CVE-2015-5707: Integer overflow in the sg_start_req function in drivers/scsi/sg.c in the Linux kernel allowed local users to cause a denial of service or possibly have unspecified other impact via a large iov_count value in a write request. (bsc#940342 bsc#940338)

This kernel live patch for Linux Kernel 3.12.44-52.10.1 fixes two security issues:

• CVE-2015-7613: A race condition in the IPC object implementation in the Linux kernel allowed local users to gain privileges by triggering an ipc_addid call that leads to uid and gid comparisons against uninitialized data, related to msg.c, shm.c, and util.c. (bsc#948701 bsc#948536)
• CVE-2015-5707: Integer overflow in the sg_start_req function in drivers/scsi/sg.c in the Linux kernel allowed local users to cause a denial of service or possibly have unspecified other impact via a large iov_count value in a write request. (bsc#940342 bsc#940338)

This kernel live patch for Linux Kernel 3.12.32-33.1 fixes two security issues:

• CVE-2015-7613: A race condition in the IPC object implementation in the Linux kernel allowed local users to gain privileges by triggering an ipc_addid call that leads to uid and gid comparisons against uninitialized data, related to msg.c, shm.c, and util.c. (bsc#948701 bsc#948536)
• CVE-2015-5707: Integer overflow in the sg_start_req function in drivers/scsi/sg.c in the Linux kernel allowed local users to cause a denial of service or possibly have unspecified other impact via a large iov_count value in a write request. (bsc#940342 bsc#940338)

This kernel live patch for Linux Kernel 3.12.38-44.1 fixes two security issues:

• CVE-2015-7613: A race condition in the IPC object implementation in the Linux kernel allowed local users to gain privileges by triggering an ipc_addid call that leads to uid and gid comparisons against uninitialized data, related to msg.c, shm.c, and util.c. (bsc#948701 bsc#948536)
• CVE-2015-5707: Integer overflow in the sg_start_req function in drivers/scsi/sg.c in the Linux kernel allowed local users to cause a denial of service or possibly have unspecified other impact via a large iov_count value in a write request. (bsc#940342 bsc#940338)

This kernel live patch for Linux Kernel 3.12.36-38.1 fixes two security issues:

• CVE-2015-7613: A race condition in the IPC object implementation in the Linux kernel allowed local users to gain privileges by triggering an ipc_addid call that leads to uid and gid comparisons against uninitialized data, related to msg.c, shm.c, and util.c. (bsc#948701 bsc#948536)
• CVE-2015-5707: Integer overflow in the sg_start_req function in drivers/scsi/sg.c in the Linux kernel allowed local users to cause a denial of service or possibly have unspecified other impact via a large iov_count value in a write request. (bsc#940342 bsc#940338)

Race condition in the IPC object implementation in the Linux kernel through 4.2.3 allows local users to gain privileges by triggering an ipc_addid call that leads to uid and gid comparisons against uninitialized data, related to msg.c, shm.c, and util.c.

Dmitry Vyukov discovered that the Linux kernel did not properly initialize IPC object state in certain situations. A local attacker could use this to escalate their privileges, expose confidential information, or cause a denial of service (system crash).

Dmitry Vyukov discovered that the Linux kernel did not properly initialize IPC object state in certain situations. A local attacker could use this to escalate their privileges, expose confidential information, or cause a denial of service (system crash).

Dmitry Vyukov discovered that the Linux kernel did not properly initialize IPC object state in certain situations. A local attacker could use this to escalate their privileges, expose confidential information, or cause a denial of service (system crash).