{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright © Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "Updated kernel-rt packages that fix two security issues and several bugs\nare now available for Red Hat Enterprise MRG 2.5.\n\nRed Hat Product Security has rated this update as having Important security\nimpact. Common Vulnerability Scoring System (CVSS) base scores, which give\ndetailed severity ratings, are available for each vulnerability from the\nCVE links in the References section.", "title": "Topic" }, { "category": "general", "text": "The kernel-rt packages contain the Linux kernel, the core of any Linux\noperating system.\n\n* It was found that the Linux kernel's Infiniband subsystem did not\nproperly sanitize input parameters while registering memory regions from\nuser space via the (u)verbs API. A local user with access to a\n/dev/infiniband/uverbsX device could use this flaw to crash the system or,\npotentially, escalate their privileges on the system. (CVE-2014-8159,\nImportant)\n\n* A use-after-free flaw was found in the way the Linux kernel's SCTP\nimplementation handled authentication key reference counting during INIT\ncollisions. A remote attacker could use this flaw to crash the system or,\npotentially, escalate their privileges on the system. (CVE-2015-1421,\nImportant)\n\nRed Hat would like to thank Mellanox for reporting the CVE-2014-8159 issue.\nThe CVE-2015-1421 issue was discovered by Sun Baoliang of Red Hat.\n\nThe MRG-Realtime 3.10 kernel-rt sources have been updated to include the\nfollowing bug fixes:\n\n* The kdump service could become unresponsive due to a deadlock in the\nkernel call ioapic_lock.\n\n* Attempt to make metadata changes such as creating a thin device or\nsnapshot thin device did not error out cleanly.\n\n(BZ#1201384)\n\nThis update also fixes the following bug:\n\n* The MRG kernel scheduler code was missing checks for the PREEMPT_LAZY\nflag allowing tasks to be preempted more times than necessary causing\nlatency spikes on the system. Additional checks for the PREEMPT_LAZY flag\nwere added to the check_preempt_wakeup() and check_preempt_curr() functions\nin the scheduler code so that preempt wakeups were reduced and these\nlatency spikes were removed. (BZ#1157949)\n\nAll kernel-rt users are advised to upgrade to these updated packages, which\ncorrect these issues. The system must be rebooted for this update to take\neffect.", "title": "Details" }, { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2015:0751", "url": "https://access.redhat.com/errata/RHSA-2015:0751" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "external", "summary": "1181166", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1181166" }, { "category": "external", "summary": "1196581", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1196581" }, { "category": "external", "summary": "1201384", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1201384" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2015/rhsa-2015_0751.json" } ], "title": "Red Hat Security Advisory: kernel-rt security and bug fix update", "tracking": { "current_release_date": "2026-06-28T12:24:06+00:00", "generator": { "date": "2026-06-28T12:24:06+00:00", "engine": { "name": "Red Hat SDEngine", "version": "5.2.6" } }, "id": "RHSA-2015:0751", "initial_release_date": "2015-03-30T08:19:15+00:00", "revision_history": [ { "date": "2015-03-30T08:19:15+00:00", "number": "1", "summary": "Initial version" }, { "date": "2015-03-30T08:19:15+00:00", "number": "2", "summary": "Last updated version" }, { "date": "2026-06-28T12:24:06+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", "version": "3" } }, 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"default_component_of", "full_product_name": { "name": "kernel-rt-vanilla-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64 as a component of Red Hat MRG Realtime for RHEL 6 Server v.2", "product_id": "6Server-MRG-Realtime-2:kernel-rt-vanilla-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64" }, "product_reference": "kernel-rt-vanilla-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "relates_to_product_reference": "6Server-MRG-Realtime-2" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-rt-vanilla-devel-1:3.10.0-229.rt56.147.el6rt.x86_64 as a component of Red Hat MRG Realtime for RHEL 6 Server v.2", "product_id": "6Server-MRG-Realtime-2:kernel-rt-vanilla-devel-1:3.10.0-229.rt56.147.el6rt.x86_64" }, "product_reference": "kernel-rt-vanilla-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "relates_to_product_reference": "6Server-MRG-Realtime-2" } ] }, "vulnerabilities": [ { "acknowledgments": [ { "names": [ "Mellanox" ] } ], "cve": "CVE-2014-8159", "cwe": { "id": "CWE-190", "name": "Integer Overflow or Wraparound" }, "discovery_date": "2015-01-05T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "1181166" } ], "notes": [ { "category": "description", "text": "It was found that the Linux kernel's Infiniband subsystem did not properly sanitize input parameters while registering memory regions from user space via the (u)verbs API. A local user with access to a /dev/infiniband/uverbsX device could use this flaw to crash the system or, potentially, escalate their privileges on the system.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: infiniband: uverbs: unprotected physical memory access", "title": "Vulnerability summary" }, { "category": "other", "text": "This issue did affect the Linux kernel packages as shipped with Red Hat\nEnterprise Linux 5, 6, and 7, and Red Hat Enterprise MRG 2. This issue\nhas been addressed in the respective releases.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "6Server-MRG-Realtime-2:kernel-rt-1:3.10.0-229.rt56.147.el6rt.src", "6Server-MRG-Realtime-2:kernel-rt-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debuginfo-common-x86_64-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-doc-1:3.10.0-229.rt56.147.el6rt.noarch", "6Server-MRG-Realtime-2:kernel-rt-firmware-1:3.10.0-229.rt56.147.el6rt.noarch", "6Server-MRG-Realtime-2:kernel-rt-trace-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-trace-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-trace-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-devel-1:3.10.0-229.rt56.147.el6rt.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2014-8159" }, { "category": "external", "summary": "RHBZ#1181166", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1181166" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2014-8159", "url": "https://www.cve.org/CVERecord?id=CVE-2014-8159" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2014-8159", "url": "https://nvd.nist.gov/vuln/detail/CVE-2014-8159" } ], "release_date": "2015-03-11T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2015-03-30T08:19:15+00:00", "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258", "product_ids": [ "6Server-MRG-Realtime-2:kernel-rt-1:3.10.0-229.rt56.147.el6rt.src", "6Server-MRG-Realtime-2:kernel-rt-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debuginfo-common-x86_64-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-doc-1:3.10.0-229.rt56.147.el6rt.noarch", "6Server-MRG-Realtime-2:kernel-rt-firmware-1:3.10.0-229.rt56.147.el6rt.noarch", "6Server-MRG-Realtime-2:kernel-rt-trace-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-trace-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-trace-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-devel-1:3.10.0-229.rt56.147.el6rt.x86_64" ], "restart_required": { "category": "none" }, "url": "https://access.redhat.com/errata/RHSA-2015:0751" } ], "scores": [ { "cvss_v2": { "accessComplexity": "HIGH", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 6.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:H/Au:N/C:C/I:C/A:C", "version": "2.0" }, "products": [ "6Server-MRG-Realtime-2:kernel-rt-1:3.10.0-229.rt56.147.el6rt.src", "6Server-MRG-Realtime-2:kernel-rt-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debuginfo-common-x86_64-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-doc-1:3.10.0-229.rt56.147.el6rt.noarch", "6Server-MRG-Realtime-2:kernel-rt-firmware-1:3.10.0-229.rt56.147.el6rt.noarch", "6Server-MRG-Realtime-2:kernel-rt-trace-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-trace-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-trace-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-devel-1:3.10.0-229.rt56.147.el6rt.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Important" } ], "title": "kernel: infiniband: uverbs: unprotected physical memory access" }, { "acknowledgments": [ { "names": [ "Sun Baoliang" ], "organization": "Red Hat", "summary": "This issue was discovered by Red Hat." } ], "cve": "CVE-2015-1421", "cwe": { "id": "CWE-416", "name": "Use After Free" }, "discovery_date": "2015-01-20T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "1196581" } ], "notes": [ { "category": "description", "text": "A use-after-free flaw was found in the way the Linux kernel's SCTP implementation handled authentication key reference counting during INIT collisions. A remote attacker could use this flaw to crash the system or, potentially, escalate their privileges on the system.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: net: slab corruption from use after free on INIT collisions", "title": "Vulnerability summary" }, { "category": "other", "text": "This issue did not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5.\n\nThis issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2. Future Linux kernel updates for the respective releases may address this issue.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "6Server-MRG-Realtime-2:kernel-rt-1:3.10.0-229.rt56.147.el6rt.src", "6Server-MRG-Realtime-2:kernel-rt-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debuginfo-common-x86_64-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-doc-1:3.10.0-229.rt56.147.el6rt.noarch", "6Server-MRG-Realtime-2:kernel-rt-firmware-1:3.10.0-229.rt56.147.el6rt.noarch", "6Server-MRG-Realtime-2:kernel-rt-trace-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-trace-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-trace-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-devel-1:3.10.0-229.rt56.147.el6rt.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2015-1421" }, { "category": "external", "summary": "RHBZ#1196581", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1196581" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2015-1421", "url": "https://www.cve.org/CVERecord?id=CVE-2015-1421" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2015-1421", "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-1421" } ], "release_date": "2015-01-22T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2015-03-30T08:19:15+00:00", "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258", "product_ids": [ "6Server-MRG-Realtime-2:kernel-rt-1:3.10.0-229.rt56.147.el6rt.src", "6Server-MRG-Realtime-2:kernel-rt-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debuginfo-common-x86_64-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-doc-1:3.10.0-229.rt56.147.el6rt.noarch", "6Server-MRG-Realtime-2:kernel-rt-firmware-1:3.10.0-229.rt56.147.el6rt.noarch", "6Server-MRG-Realtime-2:kernel-rt-trace-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-trace-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-trace-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-devel-1:3.10.0-229.rt56.147.el6rt.x86_64" ], "restart_required": { "category": "none" }, "url": "https://access.redhat.com/errata/RHSA-2015:0751" } ], "scores": [ { "cvss_v2": { "accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.1, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C", "version": "2.0" }, "products": [ "6Server-MRG-Realtime-2:kernel-rt-1:3.10.0-229.rt56.147.el6rt.src", "6Server-MRG-Realtime-2:kernel-rt-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debug-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-debuginfo-common-x86_64-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-doc-1:3.10.0-229.rt56.147.el6rt.noarch", "6Server-MRG-Realtime-2:kernel-rt-firmware-1:3.10.0-229.rt56.147.el6rt.noarch", "6Server-MRG-Realtime-2:kernel-rt-trace-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-trace-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-trace-devel-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-debuginfo-1:3.10.0-229.rt56.147.el6rt.x86_64", "6Server-MRG-Realtime-2:kernel-rt-vanilla-devel-1:3.10.0-229.rt56.147.el6rt.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Important" } ], "title": "kernel: net: slab corruption from use after free on INIT collisions" } ] }