The remote NewStart CGSL host, running version MAIN 4.05, has kernel packages installed that are affected by multiple vulnerabilities:

  - It was found that AIO interface didn't use the proper     rw_verify_area() helper function with extended     functionality, for example, mandatory locking on the     file. Also rw_verify_area() makes extended checks, for     example, that the size of the access doesn't cause     overflow of the provided offset limits. This integer     overflow in fs/aio.c in the Linux kernel before 3.4.1     allows local users to cause a denial of service or     possibly have unspecified other impact via a large AIO     iovec. (CVE-2012-6701)

  - Integer overflow in the aio_setup_single_vector function     in fs/aio.c in the Linux kernel 4.0 allows local users     to cause a denial of service or possibly have     unspecified other impact via a large AIO iovec. NOTE:
    this vulnerability exists because of a CVE-2012-6701     regression. (CVE-2015-8830)

  - It was discovered that a remote attacker could leverage     the generation of IPv6 atomic fragments to trigger the     use of fragmentation in an arbitrary IPv6 flow (in     scenarios in which actual fragmentation of packets is     not needed) and could subsequently perform any type of a     fragmentation-based attack against legacy IPv6 nodes     that do not implement RFC6946. (CVE-2016-10142)

  - A race condition flaw was found in the ioctl_send_fib()     function in the Linux kernel's aacraid implementation. A     local attacker could use this flaw to cause a denial of     service (out-of-bounds access or system crash) by     changing a certain size value. (CVE-2016-6480)

  - It was found that when the gcc stack protector was     enabled, reading the /proc/keys file could cause a panic     in the Linux kernel due to stack corruption. This     happened because an incorrect buffer size was used to     hold a 64-bit timeout value rendered as weeks.
    (CVE-2016-7042)

  - It was found that when file permissions were modified     via chmod and the user modifying them was not in the     owning group or capable of CAP_FSETID, the setgid bit     would be cleared. Setting a POSIX ACL via setxattr sets     the file permissions as well as the new ACL, but doesn't     clear the setgid bit in a similar way. This could allow     a local user to gain group privileges via certain setgid     applications. (CVE-2016-7097)

  - A flaw was found in the Linux networking subsystem where     a local attacker with CAP_NET_ADMIN capabilities could     cause an out-of-bounds memory access by creating a     smaller-than-expected ICMP header and sending to its     destination via sendto(). (CVE-2016-8399)

  - A flaw was found in the Linux kernel key management     subsystem in which a local attacker could crash the     kernel or corrupt the stack and additional memory     (denial of service) by supplying a specially crafted RSA     key. This flaw panics the machine during the     verification of the RSA key. (CVE-2016-8650)

  - Use-after-free vulnerability in the snd_pcm_info()     function in the ALSA subsystem in the Linux kernel     allows attackers to induce a kernel memory corruption     and possibly crash or lock up a system. Due to the     nature of the flaw, a privilege escalation cannot be     fully ruled out, although we believe it is unlikely.
    (CVE-2017-0861)

  - A race condition issue was found in the way the raw     packet socket implementation in the Linux kernel     networking subsystem handled synchronization. A local     user able to open a raw packet socket (requires the     CAP_NET_RAW capability) could use this to waste     resources in the kernel's ring buffer or possibly cause     an out-of-bounds read on the heap leading to a system     crash. (CVE-2017-1000111)

  - A use-after-free flaw was found in the Netlink     functionality of the Linux kernel networking subsystem.
    Due to the insufficient cleanup in the mq_notify     function, a local attacker could potentially use this     flaw to escalate their privileges on the system.
    (CVE-2017-11176)

  - It was found that in the Linux kernel through v4.14-rc5,     bio_map_user_iov() and bio_unmap_user() in 'block/bio.c'     do unbalanced pages refcounting if IO vector has small     consecutive buffers belonging to the same page.
    bio_add_pc_page() merges them into one, but the page     reference is never dropped, causing a memory leak and     possible system lockup due to out-of-memory condition.
    (CVE-2017-12190)

  - A divide-by-zero vulnerability was found in the
    __tcp_select_window function in the Linux kernel. This     can result in a kernel panic causing a local denial of     service. (CVE-2017-14106)

  - A non-privileged user is able to mount a fuse filesystem     on RHEL 6 or 7 and crash a system if an application     punches a hole in a file that does not end aligned to a     page boundary. (CVE-2017-15121)

  - A use-after-free vulnerability was found when issuing an     ioctl to a sound device. This could allow a user to     exploit a race condition and create memory corruption or     possibly privilege escalation. (CVE-2017-15265)

  - The Linux kernel, before version 4.14.3, is vulnerable     to a denial of service in     drivers/md/dm.c:dm_get_from_kobject() which can be     caused by local users leveraging a race condition with
    __dm_destroy() during creation and removal of DM     devices. Only privileged local users (with CAP_SYS_ADMIN     capability) can directly perform the ioctl operations     for dm device creation and removal and this would     typically be outside the direct control of the     unprivileged attacker. (CVE-2017-18203)

  - A race condition leading to a NULL pointer dereference     was found in the Linux kernel's Link Layer Control     implementation. A local attacker with access to ping     sockets could use this flaw to crash the system.
    (CVE-2017-2671)

  - It was found that the original fix for CVE-2016-6786 was     incomplete. There exist a race between two concurrent     sys_perf_event_open() calls when both try and move the     same pre-existing software group into a hardware     context. (CVE-2017-6001)

  - A flaw was found in the Linux kernel's handling of     packets with the URG flag. Applications using the     splice() and tcp_splice_read() functionality could allow     a remote attacker to force the kernel to enter a     condition in which it could loop indefinitely.
    (CVE-2017-6214)

  - Kernel memory corruption due to a buffer overflow was     found in brcmf_cfg80211_mgmt_tx() function in Linux     kernels from v3.9-rc1 to v4.13-rc1. The vulnerability     can be triggered by sending a crafted NL80211_CMD_FRAME     packet via netlink. This flaw is unlikely to be     triggered remotely as certain userspace code is needed     for this. An unprivileged local user could use this flaw     to induce kernel memory corruption on the system,     leading to a crash. Due to the nature of the flaw,     privilege escalation cannot be fully ruled out, although     it is unlikely. (CVE-2017-7541)

  - An integer overflow vulnerability in     ip6_find_1stfragopt() function was found. A local     attacker that has privileges (of CAP_NET_RAW) to open     raw socket can cause an infinite loop inside the     ip6_find_1stfragopt() function. (CVE-2017-7542)

  - Incorrect error handling in the set_mempolicy() and     mbind() compat syscalls in 'mm/mempolicy.c' in the Linux     kernel allows local users to obtain sensitive     information from uninitialized stack data by triggering     failure of a certain bitmap operation. (CVE-2017-7616)

  - The mm subsystem in the Linux kernel through 4.10.10     does not properly enforce the CONFIG_STRICT_DEVMEM     protection mechanism, which allows local users to read     or write to kernel memory locations in the first     megabyte (and bypass slab-allocation access     restrictions) via an application that opens the /dev/mem     file, related to arch/x86/mm/init.c and     drivers/char/mem.c. (CVE-2017-7889)

  - The IPv6 fragmentation implementation in the Linux     kernel does not consider that the nexthdr field may be     associated with an invalid option, which allows local     users to cause a denial of service (out-of-bounds read     and BUG) or possibly have unspecified other impact via     crafted socket and send system calls. Due to the nature     of the flaw, privilege escalation cannot be fully ruled     out, although we believe it is unlikely. (CVE-2017-9074)

  - In the Linux kernel versions 4.12, 3.10, 2.6, and     possibly earlier, a race condition vulnerability exists     in the sound system allowing for a potential deadlock     and memory corruption due to use-after-free condition     and thus denial of service. Due to the nature of the     flaw, privilege escalation cannot be fully ruled out,     although we believe it is unlikely. (CVE-2018-1000004)

  - A null pointer dereference in dccp_write_xmit() function     in net/dccp/output.c in the Linux kernel allows a local     user to cause a denial of service by a number of certain     crafted system calls. (CVE-2018-1130)

  - Modern Intel microprocessors implement hardware-level     micro-optimizations to improve the performance of     writing data back to CPU caches. The write operation is     split into STA (STore Address) and STD (STore Data) sub-     operations. These sub-operations allow the processor to     hand-off address generation logic into these sub-     operations for optimized writes. Both of these sub-     operations write to a shared distributed processor     structure called the 'processor store buffer'. As a     result, an unprivileged attacker could use this flaw to     read private data resident within the CPU's processor     store buffer. (CVE-2018-12126)

  - Microprocessors use a load port subcomponent to     perform load operations from memory or IO. During a load     operation, the load port receives data from the memory     or IO subsystem and then provides the data to the CPU     registers and operations in the CPUs pipelines. Stale     load operations results are stored in the 'load port'     table until overwritten by newer operations. Certain     load-port operations triggered by an attacker can be     used to reveal data about previous stale requests     leaking data back to the attacker via a timing side-     channel. (CVE-2018-12127)

  - A flaw was found in the implementation of the fill     buffer, a mechanism used by modern CPUs when a cache-     miss is made on L1 CPU cache. If an attacker can     generate a load operation that would create a page     fault, the execution will continue speculatively with     incorrect data from the fill buffer while the data is     fetched from higher level caches. This response time can     be measured to infer data in the fill buffer.
    (CVE-2018-12130)

  - A vulnerability was found in the     fs/inode.c:inode_init_owner() function logic of the     LInux kernel that allows local users to create files     with an unintended group ownership and with group     execution and SGID permission bits set, in a scenario     where a directory is SGID and belongs to a certain group     and is writable by a user who is not a member of this     group. This can lead to excessive permissions granted in     case when they should not. (CVE-2018-13405)

  - A Floating Point Unit (FPU) state information leakage     flaw was found in the way the Linux kernel saved and     restored the FPU state during task switch. Linux kernels     that follow the Lazy FPU Restore scheme are vulnerable     to the FPU state information leakage issue. An     unprivileged local attacker could use this flaw to read     FPU state bits by conducting targeted cache side-channel     attacks, similar to the Meltdown vulnerability disclosed     earlier this year. (CVE-2018-3665)

  - An error in the _sctp_make_chunk() function     (net/sctp/sm_make_chunk.c) when handling SCTP, packet     length can be exploited by a malicious local user to     cause a kernel crash and a DoS. (CVE-2018-5803)

  - ALSA sequencer core initializes the event pool on demand     by invoking snd_seq_pool_init() when the first write     happens and the pool is empty. A user can reset the pool     size manually via ioctl concurrently, and this may lead     to UAF or out-of-bound access. (CVE-2018-7566)

  - Uncacheable memory on some microprocessors utilizing     speculative execution may allow an authenticated user to     potentially enable information disclosure via a side     channel with local access. (CVE-2019-11091)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has kernel packages installed that are affected by multiple vulnerabilities:

  - A non-privileged user is able to mount a fuse filesystem     on RHEL 6 or 7 and crash a system if an application     punches a hole in a file that does not end aligned to a     page boundary. (CVE-2017-15121)

  - A flaw was found in the Linux kernel's handling of fork     failure when dealing with event messages in the     userfaultfd code. Failure to fork correctly can create a     fork event that will be removed from an already freed     list of events. (CVE-2017-15126)

  - An out-of-bounds write vulnerability was found in the     Linux kernel's vmw_surface_define_ioctl() function, in     the 'drivers/gpu/drm/vmwgfx/vmwgfx_surface.c' file. Due     to the nature of the flaw, privilege escalation cannot     be fully ruled out, although we believe it is unlikely.
    (CVE-2017-7294)

  - A use-after-free vulnerability was found in the way the     Linux kernel's KVM hypervisor implements its device     control API. While creating a device via     kvm_ioctl_create_device(), the device holds a reference     to a VM object, later this reference is transferred to     the caller's file descriptor table. If such file     descriptor was to be closed, reference count to the VM     object could become zero, potentially leading to a use-     after-free issue. A user/process could use this flaw to     crash the guest VM resulting in a denial of service     issue or, potentially, gain privileged access to a     system. (CVE-2019-6974)

  - A use-after-free vulnerability was found in the way the     Linux kernel's KVM hypervisor emulates a preemption     timer for L2 guests when nested (=1) virtualization is     enabled. This high resolution timer(hrtimer) runs when a     L2 guest is active. After VM exit, the sync_vmcs12()     timer object is stopped. The use-after-free occurs if     the timer object is freed before calling sync_vmcs12()     routine. A guest user/process could use this flaw to     crash the host kernel resulting in a denial of service     or, potentially, gain privileged access to a system.
    (CVE-2019-7221)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003029 advisory.

    A non-privileged user is able to mount a fuse filesystem on RHEL 6 or 7 and crash a system if an     application punches a hole in a file that does not end aligned to a page boundary.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2018-1062 advisory.

    - [acpi] sbshc: remove raw pointer from printk() message (Baoquan He) [1547009] {CVE-2018-5750}
    - [media] v4l2-compat-ioctl32.c: refactor compat ioctl32 logic fixup (Jarod Wilson) [1548430]     {CVE-2017-13166}
    - [kernel] futex: Prevent overflow by strengthen input validation (Joe Lawrence) [1547585] {CVE-2018-6927}
    - [media] v4l2-compat-ioctl32.c: refactor compat ioctl32 logic (Jarod Wilson) [1548430] {CVE-2017-13166}
    - [sound] alsa: seq: Fix use-after-free at creating a port (CVE-2017-15265) (Jaroslav Kysela) [1503381]     {CVE-2017-15265}
    - [x86] kvm: fix singlestepping over syscall (Paolo Bonzini) [1464481] {CVE-2017-7518}
    - [net] netfilter: xt_TCPMSS: add more sanity tests on tcph->doff (Florian Westphal) [1543088]     {CVE-2017-18017}
    - [sound] alsa: seq: Make ioctls race-free (CVE-2018-1000004) (Jaroslav Kysela) [1537203]     {CVE-2018-1000004}
    - [x86] mm: Fix use-after-free of ldt_struct (Oleg Nesterov) [1543352] {CVE-2017-17053}
    - [net] netlink: Add netns check on taps (William Townsend) [1538738] {CVE-2017-17449}
    - [net] netfilter: xt_osf: Add missing permission checks (Florian Westphal) [1539230] {CVE-2017-17448}
    - [net] netfilter: nfnetlink_cthelper: Add missing permission checks (Florian Westphal) [1539230]     {CVE-2017-17448}
    - [powerpc] kvm: book3s: Provide information about hardware/firmware CVE workarounds (Serhii Popovych)     [1532077] {CVE-2017-5754}
    - [net] Fix double free and memory corruption in get_net_ns_by_id() (Aristeu Rozanski) [1531551]     {CVE-2017-15129}
    - [media] xc2028: avoid use after free (Torez Smith) [1402893] {CVE-2016-7913}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Security Fix(es) :

  - hw: cpu: speculative execution permission faults     handling (CVE-2017-5754, Important, KVM for Power)

  - kernel: Buffer overflow in firewire driver via crafted     incoming packets (CVE-2016-8633, Important)

  - kernel: Use-after-free vulnerability in DCCP socket     (CVE-2017-8824, Important)

  - Kernel: kvm: nVMX: L2 guest could access hardware(L0)     CR8 register (CVE-2017-12154, Important)

  - kernel: v4l2: disabled memory access protection     mechanism allowing privilege escalation (CVE-2017-13166,     Important)

  - kernel: media: use-after-free in [tuner-xc2028] media     driver (CVE-2016-7913, Moderate)

  - kernel: drm/vmwgfx: fix integer overflow in     vmw_surface_define_ioctl() (CVE-2017-7294, Moderate)

  - kernel: Incorrect type conversion for size during dma     allocation (CVE-2017-9725, Moderate)

  - kernel: memory leak when merging buffers in SCSI IO     vectors (CVE-2017-12190, Moderate)

  - kernel: vfs: BUG in truncate_inode_pages_range() and     fuse client (CVE-2017-15121, Moderate)

  - kernel: Use-after-free in     userfaultfd_event_wait_completion function in     userfaultfd.c (CVE-2017-15126, Moderate)

  - kernel: net: double-free and memory corruption in     get_net_ns_by_id() (CVE-2017-15129, Moderate)

  - kernel: Use-after-free in snd_seq_ioctl_create_port()     (CVE-2017-15265, Moderate)

  - kernel: Missing capabilities check in     net/netfilter/nfnetlink_cthelper.c allows for     unprivileged access to systemwide nfnl_cthelper_list     structure (CVE-2017-17448, Moderate)

  - kernel: Missing namespace check in     net/netlink/af_netlink.c allows for network monitors to     observe systemwide activity (CVE-2017-17449, Moderate)

  - kernel: Unallocated memory access by malicious USB     device via bNumInterfaces overflow (CVE-2017-17558,     Moderate)

  - kernel: netfilter: use-after-free in     tcpmss_mangle_packet function in     net/netfilter/xt_TCPMSS.c (CVE-2017-18017, Moderate)

  - kernel: Race condition in     drivers/md/dm.c:dm_get_from_kobject() allows local users     to cause a denial of service (CVE-2017-18203, Moderate)

  - kernel: kvm: Reachable BUG() on out-of-bounds guest IRQ     (CVE-2017-1000252, Moderate)

  - Kernel: KVM: DoS via write flood to I/O port 0x80     (CVE-2017-1000407, Moderate)

  - kernel: Stack information leak in the EFS element     (CVE-2017-1000410, Moderate)

  - kernel: Kernel address information leak in     drivers/acpi/sbshc.c:acpi_smbus_hc_add() function     potentially allowing KASLR bypass (CVE-2018-5750,     Moderate)

  - kernel: Race condition in sound system can lead to     denial of service (CVE-2018-1000004, Moderate)

  - kernel: multiple Low security impact security issues     (CVE-2016-3672, CVE-2017-14140, CVE-2017-15116,     CVE-2017-15127, CVE-2018-6927, Low)

Additional Changes :

An update for kernel is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es) :

* An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks. (CVE-2018-3639, PowerPC)

* kernel: net/packet: overflow in check for priv area size (CVE-2017-7308)

* kernel: AIO interface didn't use rw_verify_area() for checking mandatory locking on files and size of access (CVE-2012-6701)

* kernel: AIO write triggers integer overflow in some protocols (CVE-2015-8830)

* kernel: NULL pointer dereference via keyctl (CVE-2016-8650)

* kernel: ping socket / AF_LLC connect() sin_family race (CVE-2017-2671)

* kernel: Race condition between multiple sys_perf_event_open() calls (CVE-2017-6001)

* kernel: Incorrect error handling in the set_mempolicy and mbind compat syscalls in mm/mempolicy.c (CVE-2017-7616)

* kernel: mm subsystem does not properly enforce the CONFIG_STRICT_DEVMEM protection mechanism (CVE-2017-7889)

* kernel: Double free in the inet_csk_clone_lock function in net/ipv4/ inet_connection_sock.c (CVE-2017-8890)

* kernel: net: sctp_v6_create_accept_sk function mishandles inheritance (CVE-2017-9075)

* kernel: net: IPv6 DCCP implementation mishandles inheritance (CVE-2017-9076)

* kernel: net: tcp_v6_syn_recv_sock function mishandles inheritance (CVE-2017-9077)

* kernel: memory leak when merging buffers in SCSI IO vectors (CVE-2017-12190)

* kernel: vfs: BUG in truncate_inode_pages_range() and fuse client (CVE-2017-15121)

* kernel: Race condition in drivers/md/dm.c:dm_get_from_kobject() allows local users to cause a denial of service (CVE-2017-18203)

* kernel: a NULL pointer dereference in net/dccp/output.c:dccp_write_xmit() leads to a system crash (CVE-2018-1130)

* kernel: Missing length check of payload in net/sctp/ sm_make_chunk.c:_sctp_make_chunk() function allows denial of service (CVE-2018-5803)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) for reporting CVE-2018-3639; Vitaly Mayatskih for reporting CVE-2017-12190; and Evgenii Shatokhin (Virtuozzo Team) for reporting CVE-2018-1130. The CVE-2017-15121 issue was discovered by Miklos Szeredi (Red Hat).

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.10 Release Notes and Red Hat Enterprise Linux 6.10 Technical Notes linked from the References section.

ID	名稱	產品	系列	已發布	已更新	嚴重性
110701	Oracle Linux 6 : kernel (ELSA-2018-1854)	Nessus	Oracle Linux Local Security Checks	2018/6/27	2026/2/9	high
127425	NewStart CGSL MAIN 4.05 : kernel Multiple Vulnerabilities (NS-SA-2019-0152)	Nessus	NewStart CGSL Local Security Checks	2019/8/12	2022/12/6	high
127285	NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel Multiple Vulnerabilities (NS-SA-2019-0077)	Nessus	NewStart CGSL Local Security Checks	2019/8/12	2024/5/7	high
287313	Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003029)	Nessus	Unity Linux Local Security Checks	2026/1/15	2026/1/16	medium
109113	Oracle Linux 7 : kernel (ELSA-2018-1062)	Nessus	Oracle Linux Local Security Checks	2018/4/18	2026/2/9	critical
109449	Scientific Linux Security Update : kernel on SL7.x x86_64 (20180410) (Meltdown)	Nessus	Scientific Linux Local Security Checks	2018/5/1	2026/1/13	critical
110645	CentOS 6 : kernel (CESA-2018:1854) (Spectre)	Nessus	CentOS Local Security Checks	2018/6/22	2024/9/17	high

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