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Red Hat Product Errata RHSA-2017:1490 - Security Advisory
Issued:
2017-06-19
Updated:
2017-06-19

RHSA-2017:1490 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: kernel security update

Type/Severity

Security Advisory: Important

Topic

An update for kernel is now available for Red Hat Enterprise Linux 6.4 Advanced Update Support.

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.

Description

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

Security Fix(es):

  • A flaw was found in the way memory was being allocated on the stack for user space binaries. If heap (or different memory region) and stack memory regions were adjacent to each other, an attacker could use this flaw to jump over the stack guard gap, cause controlled memory corruption on process stack or the adjacent memory region, and thus increase their privileges on the system. This is a kernel-side mitigation which increases the stack guard gap size from one page to 1 MiB to make successful exploitation of this issue more difficult. (CVE-2017-1000364, Important)

Red Hat would like to thank Qualys Research Labs for reporting this issue.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Affected Products

  • Red Hat Enterprise Linux Server - AUS 6.4 x86_64

Fixes

  • BZ - 1461333 - CVE-2017-1000364 kernel: heap/stack gap jumping via unbounded stack allocations

CVEs

  • CVE-2017-1000364
  • CVE-2017-1000379

References

  • https://access.redhat.com/security/updates/classification/#important
  • https://access.redhat.com/security/vulnerabilities/stackguard
  • Note: More recent versions of these packages may be available. Click a package name for more details.

    Red Hat Enterprise Linux Server - AUS 6.4

    SRPM
    kernel-2.6.32-358.79.2.el6.src.rpm SHA-256: 0d9dab3e9819f2e12ecfffb1268c8f1bb5e43ec658405ffd5573625399c6806b
    x86_64
    kernel-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: 94c8a5cbcb81650c0c2092cca5e8a081e4c706410e8501bb69a80460a8148ba8
    kernel-debug-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: 108c9c732958515e87d85568205f3dfb814fa8a23e89e00bc7fd72946599577f
    kernel-debug-debuginfo-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: b0720b34758ae0b2cd5441ec4e89aa37ab04694b3588b82830ba218ecbd883b2
    kernel-debug-debuginfo-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: b0720b34758ae0b2cd5441ec4e89aa37ab04694b3588b82830ba218ecbd883b2
    kernel-debug-devel-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: 9e585e7d004751e0ab308c36e7638ef3988fa8813bcc9b97c9ef4a7f4682bf9a
    kernel-debuginfo-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: 88678745b524150fdacb2229b7ea29e76f20995ccaa17d43fcc2b8cf3873923a
    kernel-debuginfo-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: 88678745b524150fdacb2229b7ea29e76f20995ccaa17d43fcc2b8cf3873923a
    kernel-debuginfo-common-x86_64-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: 808b6fa32f073903ad47e3013b9bf87adc1b8d99c3d63e8773fcbfe276e07084
    kernel-debuginfo-common-x86_64-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: 808b6fa32f073903ad47e3013b9bf87adc1b8d99c3d63e8773fcbfe276e07084
    kernel-devel-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: 42996e3f309ff6c6269b42cf170aa44307b92188c1e311f55394e6bcfe018b8f
    kernel-doc-2.6.32-358.79.2.el6.noarch.rpm SHA-256: 2c7ed7906dcb8f8bb64525f11d2ee5ab89173b25719709288b3bf519400388e2
    kernel-firmware-2.6.32-358.79.2.el6.noarch.rpm SHA-256: 235739fecb75a7be6234c89cb9f2c8ee2d024cb71066476ac153d70495c3853f
    kernel-headers-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: 699888d125f65eadde5efaf637220ae37387c32d9fcee560a91eabe1bb59714e
    perf-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: 25e8c95423a35e8713b2baa8ae2401d14ec0a8f453ee34249a6583cf2f91a740
    perf-debuginfo-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: b93b2bf1fcdea8ecaae9f779113db44cbdfa5f46e2802b3aa6cc0a8f3cf560a6
    perf-debuginfo-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: b93b2bf1fcdea8ecaae9f779113db44cbdfa5f46e2802b3aa6cc0a8f3cf560a6
    python-perf-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: 757b5e53ddf5135c8ab72543dec5142f20bf7ad217982df13ed2da77fb842711
    python-perf-debuginfo-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: 5e8b548b3e6b4c88a7314f6e368da7b7ef9ba5535a9c93554b69ff7fc9d0cae9
    python-perf-debuginfo-2.6.32-358.79.2.el6.x86_64.rpm SHA-256: 5e8b548b3e6b4c88a7314f6e368da7b7ef9ba5535a9c93554b69ff7fc9d0cae9

    The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

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