-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security, bug fix, and enhancement update Advisory ID: RHSA-2017:1308-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:1308 Issue date: 2017-05-25 CVE Names: CVE-2016-10208 CVE-2016-7910 CVE-2016-8646 CVE-2017-5986 CVE-2017-7308 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7. 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. 2. Relevant releases/architectures: Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * It was found that the packet_set_ring() function of the Linux kernel's networking implementation did not properly validate certain block-size data. A local attacker with CAP_NET_RAW capability could use this flaw to trigger a buffer overflow, resulting in the crash of the system. Due to the nature of the flaw, privilege escalation cannot be fully ruled out. (CVE-2017-7308, Important) * Mounting a crafted EXT4 image read-only leads to an attacker controlled memory corruption and SLAB-Out-of-Bounds reads. (CVE-2016-10208, Moderate) * A flaw was found in the Linux kernel's implementation of seq_file where a local attacker could manipulate memory in the put() function pointer. This could lead to memory corruption and possible privileged escalation. (CVE-2016-7910, Moderate) * A vulnerability was found in the Linux kernel. An unprivileged local user could trigger oops in shash_async_export() by attempting to force the in-kernel hashing algorithms into decrypting an empty data set. (CVE-2016-8646, Moderate) * It was reported that with Linux kernel, earlier than version v4.10-rc8, an application may trigger a BUG_ON in sctp_wait_for_sndbuf if the socket tx buffer is full, a thread is waiting on it to queue more data, and meanwhile another thread peels off the association being used by the first thread. (CVE-2017-5986, Moderate) Red Hat would like to thank Igor Redko (Virtuozzo kernel team) for reporting CVE-2016-8646. Additional Changes: This update also fixes several bugs and adds various enhancements. Documentation for these changes is available from the Technical Notes document linked to in the References section. 4. 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. 5. Bugs fixed (https://bugzilla.redhat.com/): 1388821 - CVE-2016-8646 kernel: Oops in shash_async_export() 1395190 - CVE-2016-10208 kernel: EXT4 memory corruption / SLAB out-of-bounds read 1399727 - CVE-2016-7910 kernel: Use after free in seq file 1420276 - CVE-2017-5986 kernel: Reachable BUG_ON from userspace in sctp_wait_for_sndbuf 1437404 - CVE-2017-7308 kernel: net/packet: overflow in check for priv area size 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: kernel-3.10.0-514.21.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-514.21.1.el7.noarch.rpm kernel-doc-3.10.0-514.21.1.el7.noarch.rpm x86_64: kernel-3.10.0-514.21.1.el7.x86_64.rpm kernel-debug-3.10.0-514.21.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.21.1.el7.x86_64.rpm kernel-devel-3.10.0-514.21.1.el7.x86_64.rpm kernel-headers-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-514.21.1.el7.x86_64.rpm perf-3.10.0-514.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm python-perf-3.10.0-514.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: kernel-debug-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-514.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: kernel-3.10.0-514.21.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-514.21.1.el7.noarch.rpm kernel-doc-3.10.0-514.21.1.el7.noarch.rpm x86_64: kernel-3.10.0-514.21.1.el7.x86_64.rpm kernel-debug-3.10.0-514.21.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.21.1.el7.x86_64.rpm kernel-devel-3.10.0-514.21.1.el7.x86_64.rpm kernel-headers-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-514.21.1.el7.x86_64.rpm perf-3.10.0-514.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm python-perf-3.10.0-514.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): x86_64: kernel-debug-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-514.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: kernel-3.10.0-514.21.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-514.21.1.el7.noarch.rpm kernel-doc-3.10.0-514.21.1.el7.noarch.rpm ppc64: kernel-3.10.0-514.21.1.el7.ppc64.rpm kernel-bootwrapper-3.10.0-514.21.1.el7.ppc64.rpm kernel-debug-3.10.0-514.21.1.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-514.21.1.el7.ppc64.rpm kernel-debug-devel-3.10.0-514.21.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-514.21.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-514.21.1.el7.ppc64.rpm kernel-devel-3.10.0-514.21.1.el7.ppc64.rpm kernel-headers-3.10.0-514.21.1.el7.ppc64.rpm kernel-tools-3.10.0-514.21.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-514.21.1.el7.ppc64.rpm kernel-tools-libs-3.10.0-514.21.1.el7.ppc64.rpm perf-3.10.0-514.21.1.el7.ppc64.rpm perf-debuginfo-3.10.0-514.21.1.el7.ppc64.rpm python-perf-3.10.0-514.21.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-514.21.1.el7.ppc64.rpm ppc64le: kernel-3.10.0-514.21.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-514.21.1.el7.ppc64le.rpm kernel-debug-3.10.0-514.21.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-514.21.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-514.21.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-514.21.1.el7.ppc64le.rpm kernel-devel-3.10.0-514.21.1.el7.ppc64le.rpm kernel-headers-3.10.0-514.21.1.el7.ppc64le.rpm kernel-tools-3.10.0-514.21.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-514.21.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-514.21.1.el7.ppc64le.rpm perf-3.10.0-514.21.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-514.21.1.el7.ppc64le.rpm python-perf-3.10.0-514.21.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-514.21.1.el7.ppc64le.rpm s390x: kernel-3.10.0-514.21.1.el7.s390x.rpm kernel-debug-3.10.0-514.21.1.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-514.21.1.el7.s390x.rpm kernel-debug-devel-3.10.0-514.21.1.el7.s390x.rpm kernel-debuginfo-3.10.0-514.21.1.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-514.21.1.el7.s390x.rpm kernel-devel-3.10.0-514.21.1.el7.s390x.rpm kernel-headers-3.10.0-514.21.1.el7.s390x.rpm kernel-kdump-3.10.0-514.21.1.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-514.21.1.el7.s390x.rpm kernel-kdump-devel-3.10.0-514.21.1.el7.s390x.rpm perf-3.10.0-514.21.1.el7.s390x.rpm perf-debuginfo-3.10.0-514.21.1.el7.s390x.rpm python-perf-3.10.0-514.21.1.el7.s390x.rpm python-perf-debuginfo-3.10.0-514.21.1.el7.s390x.rpm x86_64: kernel-3.10.0-514.21.1.el7.x86_64.rpm kernel-debug-3.10.0-514.21.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.21.1.el7.x86_64.rpm kernel-devel-3.10.0-514.21.1.el7.x86_64.rpm kernel-headers-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-514.21.1.el7.x86_64.rpm perf-3.10.0-514.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm python-perf-3.10.0-514.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): ppc64: kernel-debug-debuginfo-3.10.0-514.21.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-514.21.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-514.21.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-514.21.1.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-514.21.1.el7.ppc64.rpm perf-debuginfo-3.10.0-514.21.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-514.21.1.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-514.21.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-514.21.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-514.21.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-514.21.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-514.21.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-514.21.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-514.21.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-514.21.1.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-514.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: kernel-3.10.0-514.21.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-514.21.1.el7.noarch.rpm kernel-doc-3.10.0-514.21.1.el7.noarch.rpm x86_64: kernel-3.10.0-514.21.1.el7.x86_64.rpm kernel-debug-3.10.0-514.21.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.21.1.el7.x86_64.rpm kernel-devel-3.10.0-514.21.1.el7.x86_64.rpm kernel-headers-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-514.21.1.el7.x86_64.rpm perf-3.10.0-514.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm python-perf-3.10.0-514.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: kernel-debug-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-514.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-514.21.1.el7.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2016-10208 https://access.redhat.com/security/cve/CVE-2016-7910 https://access.redhat.com/security/cve/CVE-2016-8646 https://access.redhat.com/security/cve/CVE-2017-5986 https://access.redhat.com/security/cve/CVE-2017-7308 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/articles/3034221 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2017 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFZJwObXlSAg2UNWIIRAi76AKC1sCNoWTku3UsUaUYSwHybWIDp3gCgkqCj zAdHKUmc+d48xT+i4FrggKE= =BVB9 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce