Synopsis

Important: kernel security update

Type/Severity

Security Advisory: Important

Topic

An update for kernel is now available for Red Hat Enterprise Linux 6.6 Advanced Update Support and Red Hat Enterprise Linux 6.6 Telco Extended 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 6.6 x86_64
• Red Hat Enterprise Linux Server - TUS 6.6 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
• https://access.redhat.com/security/vulnerabilities/2706661

Red Hat Enterprise Linux Server - AUS 6.6

SRPM
kernel-2.6.32-504.57.1.el6.src.rpm	SHA-256: 36ba9d17955aac0123c129f471ad9a1b5f77b31e1e3a613da86fdbb49d9e8bc2
x86_64
kernel-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: a6c1db207fcb4cbf8b3f657924fb8623534b909e51c932c17da74059b0d29a4d
kernel-abi-whitelists-2.6.32-504.57.1.el6.noarch.rpm	SHA-256: 8bc57ccc2fe67a08c72e5f63616955872c3957487efa6f0262e4baac98db4df3
kernel-debug-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 926e0ff90f94f7d8eeb8132708be6423d095d8705d37872ac382ff75cd4eb320
kernel-debug-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: f04187294d446d5e98da732ed58398592fa74ac66a1aad009f77773772c411a0
kernel-debug-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: f04187294d446d5e98da732ed58398592fa74ac66a1aad009f77773772c411a0
kernel-debug-devel-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: c765181f4af1fb995b7f8366754478b42758d35cdecd66bf8864c8d156dc501f
kernel-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 02c63f00037a62216f92293c7fc83614f88ece3afc5b5ace680aef4c9c771d6b
kernel-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 02c63f00037a62216f92293c7fc83614f88ece3afc5b5ace680aef4c9c771d6b
kernel-debuginfo-common-x86_64-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: b8c6d2173f13a25f9da56c9b1da6ca7781c31ba16216ec8a223b7a678e0d8f75
kernel-debuginfo-common-x86_64-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: b8c6d2173f13a25f9da56c9b1da6ca7781c31ba16216ec8a223b7a678e0d8f75
kernel-devel-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 3f3d80207a807274aadc7a35fcdcbea947dfe1c837ccec94d38657af4934d086
kernel-doc-2.6.32-504.57.1.el6.noarch.rpm	SHA-256: 0925b22a5dc9054bb0a992cb33e1cc9e1b4bf16d075c35369afc576211de7b93
kernel-firmware-2.6.32-504.57.1.el6.noarch.rpm	SHA-256: 7472925334b47588ae1508252b062d67788a0965dd514b2ec1663f073b9226a3
kernel-headers-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 83e97cd35e45834dc0b8dee13b5381bae248d7541699505533b9cfcb4ade654f
perf-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 7125ef4b22259389faa48da717526e68cd1a764b47dbb05173d0bf695380d4df
perf-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: f9c445db8c834ac285f2562c1dae7c17b2395e38f0d5db2d27b59f15989e69a0
perf-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: f9c445db8c834ac285f2562c1dae7c17b2395e38f0d5db2d27b59f15989e69a0
python-perf-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 9fd0ce9dceaa06f44d73b95a82ae29816de429ecbdeb330b5b620b30377a45cd
python-perf-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 814506923a494685c86f0ddbb0850601e620002712a95a299df08c7a10521e22
python-perf-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 814506923a494685c86f0ddbb0850601e620002712a95a299df08c7a10521e22

Red Hat Enterprise Linux Server - TUS 6.6

SRPM
kernel-2.6.32-504.57.1.el6.src.rpm	SHA-256: 36ba9d17955aac0123c129f471ad9a1b5f77b31e1e3a613da86fdbb49d9e8bc2
x86_64
kernel-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: a6c1db207fcb4cbf8b3f657924fb8623534b909e51c932c17da74059b0d29a4d
kernel-abi-whitelists-2.6.32-504.57.1.el6.noarch.rpm	SHA-256: 8bc57ccc2fe67a08c72e5f63616955872c3957487efa6f0262e4baac98db4df3
kernel-debug-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 926e0ff90f94f7d8eeb8132708be6423d095d8705d37872ac382ff75cd4eb320
kernel-debug-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: f04187294d446d5e98da732ed58398592fa74ac66a1aad009f77773772c411a0
kernel-debug-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: f04187294d446d5e98da732ed58398592fa74ac66a1aad009f77773772c411a0
kernel-debug-devel-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: c765181f4af1fb995b7f8366754478b42758d35cdecd66bf8864c8d156dc501f
kernel-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 02c63f00037a62216f92293c7fc83614f88ece3afc5b5ace680aef4c9c771d6b
kernel-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 02c63f00037a62216f92293c7fc83614f88ece3afc5b5ace680aef4c9c771d6b
kernel-debuginfo-common-x86_64-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: b8c6d2173f13a25f9da56c9b1da6ca7781c31ba16216ec8a223b7a678e0d8f75
kernel-debuginfo-common-x86_64-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: b8c6d2173f13a25f9da56c9b1da6ca7781c31ba16216ec8a223b7a678e0d8f75
kernel-devel-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 3f3d80207a807274aadc7a35fcdcbea947dfe1c837ccec94d38657af4934d086
kernel-doc-2.6.32-504.57.1.el6.noarch.rpm	SHA-256: 0925b22a5dc9054bb0a992cb33e1cc9e1b4bf16d075c35369afc576211de7b93
kernel-firmware-2.6.32-504.57.1.el6.noarch.rpm	SHA-256: 7472925334b47588ae1508252b062d67788a0965dd514b2ec1663f073b9226a3
kernel-headers-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 83e97cd35e45834dc0b8dee13b5381bae248d7541699505533b9cfcb4ade654f
perf-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 7125ef4b22259389faa48da717526e68cd1a764b47dbb05173d0bf695380d4df
perf-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: f9c445db8c834ac285f2562c1dae7c17b2395e38f0d5db2d27b59f15989e69a0
perf-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: f9c445db8c834ac285f2562c1dae7c17b2395e38f0d5db2d27b59f15989e69a0
python-perf-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 9fd0ce9dceaa06f44d73b95a82ae29816de429ecbdeb330b5b620b30377a45cd
python-perf-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 814506923a494685c86f0ddbb0850601e620002712a95a299df08c7a10521e22
python-perf-debuginfo-2.6.32-504.57.1.el6.x86_64.rpm	SHA-256: 814506923a494685c86f0ddbb0850601e620002712a95a299df08c7a10521e22