• [SECURITY] [DSA 4188-1] linux security update (2/2)

    From Salvatore Bonaccorso@1:229/2 to All on Tue May 1 19:20:01 2018
    [continued from previous message]

    the length of chunks to be created. A local or remote user could
    use this to cause a denial of service.

    CVE-2018-7480

    Hou Tao discovered a double-free flaw in the blkcg_init_queue()
    function in block/blk-cgroup.c. A local user could use this to cause
    a denial of service or have other impact.

    CVE-2018-7566

    Fan LongFei reported a race condition in the ALSA (sound)
    sequencer core, between write and ioctl operations. This could
    lead to an out-of-bounds access or use-after-free. A local user
    with access to a sequencer device could use this for denial of
    service or possibly for privilege escalation.

    CVE-2018-7740

    Nic Losby reported that the hugetlbfs filesystem's mmap operation
    did not properly range-check the file offset. A local user with
    access to files on a hugetlbfs filesystem could use this to cause
    a denial of service.

    CVE-2018-7757

    Jason Yan reported a memory leak in the SAS (Serial-Attached
    SCSI) subsystem. A local user on a system with SAS devices
    could use this to cause a denial of service.

    CVE-2018-7995

    Seunghun Han reported a race condition in the x86 MCE
    (Machine Check Exception) driver. This is unlikely to have
    any security impact.

    CVE-2018-8087

    A memory leak flaw was found in the hwsim_new_radio_nl() function in
    the simulated radio testing tool driver for mac80211, allowing a
    local user to cause a denial of service.

    CVE-2018-8781

    Eyal Itkin reported that the udl (DisplayLink) driver's mmap
    operation did not properly range-check the file offset. A local
    user with access to a udl framebuffer device could exploit this to
    overwrite kernel memory, leading to privilege escalation.

    CVE-2018-8822

    Dr Silvio Cesare of InfoSect reported that the ncpfs client
    implementation did not validate reply lengths from the server. An
    ncpfs server could use this to cause a denial of service or
    remote code execution in the client.

    CVE-2018-10323

    Wen Xu reported a NULL pointer dereference flaw in the
    xfs_bmapi_write() function triggered when mounting and operating a
    crafted xfs filesystem image. A local user able to mount arbitrary
    filesystems could use this for denial of service.

    CVE-2018-1000199

    Andy Lutomirski discovered that the ptrace subsystem did not
    sufficiently validate hardware breakpoint settings. Local users
    can use this to cause a denial of service, or possibly for
    privilege escalation, on x86 (amd64 and i386) and possibly other
    architectures.

    For the stable distribution (stretch), these problems have been fixed in version 4.9.88-1.

    We recommend that you upgrade your linux packages.

    For the detailed security status of linux please refer to its security
    tracker page at:
    https://security-tracker.debian.org/tracker/linux

    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://www.debian.org/security/

    Mailing list: [email protected]
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    * Origin: you cannot sedate... all the things you hate (1:229/2)