Synopsis

Important: kernel security update

Type/Severity

Security Advisory: Important

Topic

An update for kernel is now available for Red Hat Enterprise Linux 6.2 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 use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation freed SKB (socket buffer) resources for a DCCP_PKT_REQUEST packet when the IPV6_RECVPKTINFO option is set on the socket. A local, unprivileged user could use this flaw to alter the kernel memory, allowing them to escalate their privileges on the system. (CVE-2017-6074, Important)
  

Red Hat would like to thank Andrey Konovalov (Google) 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 6.2 x86_64

Fixes

• BZ - 1423071 - CVE-2017-6074 kernel: use after free in dccp protocol

CVEs

• CVE-2017-6074

References

• https://access.redhat.com/security/updates/classification/#important

Red Hat Enterprise Linux Server - AUS 6.2

SRPM
kernel-2.6.32-220.70.1.el6.src.rpm	SHA-256: 2cd2fe15aecc03b06abe4a91b4b3ed8b081a5fc828f7314e5442980f336aef96
x86_64
kernel-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: dbbbb7f6a455c1e331fd6bacb6c0b4d5013139f657cb7102e4c1e1ac44bb3884
kernel-debug-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: 2aec927293e34a31ccc33af596be2ce2ebe0fe34457bb88336fe3d5dc14c1729
kernel-debug-debuginfo-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: a980ff11a51795d28423e1d09f604c9645b413992f2af1a9f650686aa167ea52
kernel-debug-debuginfo-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: a980ff11a51795d28423e1d09f604c9645b413992f2af1a9f650686aa167ea52
kernel-debug-devel-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: 5a74ffbd3378d0709557cda7b9dab95f2944821f9d1830bfd13016d6bf8f7444
kernel-debuginfo-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: 0cb3bdd6b19301796cb6f8bc7b965c04110ab79600860228d95bde8bf33dbf34
kernel-debuginfo-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: 0cb3bdd6b19301796cb6f8bc7b965c04110ab79600860228d95bde8bf33dbf34
kernel-debuginfo-common-x86_64-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: c1bfd66794db67445d18037345f19c3a98dcd69c81114612ffc8bf7ccf706659
kernel-debuginfo-common-x86_64-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: c1bfd66794db67445d18037345f19c3a98dcd69c81114612ffc8bf7ccf706659
kernel-devel-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: 48e7959e69af52a81f59d80aa36e391f23254ed6ee54a28c9183384a9c6b9d82
kernel-doc-2.6.32-220.70.1.el6.noarch.rpm	SHA-256: 1af746b66e232aa26d5fd07e3a31a501aa073d467b28382c8b22893eaa6a4c68
kernel-firmware-2.6.32-220.70.1.el6.noarch.rpm	SHA-256: b8a821df5ae0d84f547844115c0bfc7312315a32d22e5e6fa77eb7a737c3f399
kernel-headers-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: 1908d8947a6dd0b919377fa415f5a3476535a236b4b9bc16f620a45838363ec7
perf-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: 0055bc02b75658fe415513a0f8d5e06dc0ceb0d831b87d45709c27e21a0c6648
perf-debuginfo-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: 470cf9087914af9284cf3739b19415fca895f02612276a625cfc2b879c978144
perf-debuginfo-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: 470cf9087914af9284cf3739b19415fca895f02612276a625cfc2b879c978144
python-perf-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: ec83b285b4e71685d2286eb5a17f10c13c33cdcc3a1343dca39f7d383391dcc0
python-perf-debuginfo-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: dd7d42132f4fd1d4a2469967f867b96bd9937f9fb4ac0db72c8369aff9851239
python-perf-debuginfo-2.6.32-220.70.1.el6.x86_64.rpm	SHA-256: dd7d42132f4fd1d4a2469967f867b96bd9937f9fb4ac0db72c8369aff9851239