{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Important" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "Copyright \u00a9 2023 Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "An update for kernel-rt is now available for Red Hat Enterprise Linux 9.\n\nRed 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.", "title": "Topic" }, { "category": "general", "text": "The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.\n\nSecurity Fix(es):\n\n* kernel: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)\n\n* kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)\n\n* kernel: KVM: x86/mmu: race condition in direct_page_fault() (CVE-2022-45869)\n\n* kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c (CVE-2023-0458)\n\n* kernel: Spectre v2 SMT mitigations problem (CVE-2023-1998)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nBug Fix(es):\n\n* RHEL9 rt: blktests block/024 failed (BZ#2209920)\n\n* Backport pinned timers RT specific behavior for FIFO tasks (BZ#2210071)\n\n* kernel-rt: update RT source tree to the RHEL-9.2z2 source tree (BZ#2215122)\n\n* kernel-rt: update RT source tree to the RHEL-9.2z2b source tree (BZ#2222796)", "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 offerings.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2023:4378", "url": "https://access.redhat.com/errata/RHSA-2023:4378" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_4378.json" } ], "title": "Red Hat Security Advisory: kernel-rt security and bug fix update", "tracking": { "current_release_date": "2023-08-01T09:08:00Z", "generator": { "date": "2023-08-01T15:17:00Z", "engine": { "name": "Red Hat SDEngine", "version": "3.20.1" } }, "id": "RHSA-2023:4378", "initial_release_date": "2023-08-01T09:08:00Z", "revision_history": [ { "date": "2023-08-01T09:08:00Z", "number": "1", "summary": "Current version" } ], "status": "final", "version": "1" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux NFV (v. 9)", "product": { "name": "Red Hat Enterprise Linux NFV (v. 9)", "product_id": "NFV-9.2.0.Z.MAIN.EUS", "product_identification_helper": { "cpe": "cpe:/a:redhat:enterprise_linux:9::nfv" } } }, { "category": "product_name", "name": "Red Hat Enterprise Linux RT (v. 9)", "product": { "name": "Red Hat Enterprise Linux RT (v. 9)", "product_id": "RT-9.2.0.Z.MAIN.EUS", "product_identification_helper": { "cpe": 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direct_page_fault()" }, { "cve": "CVE-2023-0458", "cwe": { "id": "CWE-476", "name": "NULL Pointer Dereference" }, "discovery_date": "2023-04-26T00:00:00Z", "ids": [ { "system_name": "Red Hat Bugzilla", "text": "https://bugzilla.redhat.com/show_bug.cgi?id=2193219" } ], "notes": [ { "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" }, { "category": "description", "text": "A speculative pointer dereference problem exists in the Linux Kernel on the do_prlimit() function. The resource argument value is controlled and is used in pointer arithmetic for the 'rlim' variable and can be used to leak the contents. We recommend upgrading past version 6.1.8 or commit 739790605705ddcf18f21782b9c99ad7d53a8c11", "title": "Vulnerability description" }, { "category": "summary", "text": "speculative pointer dereference in do_prlimit() in kernel/sys.c", "title": "Vulnerability summary" } ], "product_status": { "fixed": [ "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-0:5.14.0-284.25.1.rt14.310.el9_2.src", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-core-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-debug-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-debug-core-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-debug-debuginfo-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-debug-devel-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-debug-kvm-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", 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This issue is caused by missing skb->cb initialization in `__ip_options_echo` and can lead to an out-of-bounds write stack overflow. This may allow a local user to cause a denial of service or potentially achieve local privilege escalation.", "title": "Vulnerability description" }, { "category": "summary", "text": "out-of-bounds write caused by unclear skb->cb", "title": "Vulnerability summary" } ], "product_status": { "fixed": [ "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-0:5.14.0-284.25.1.rt14.310.el9_2.src", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-core-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-debug-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-debug-core-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-debug-debuginfo-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-debug-devel-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", "NFV-9.2.0.Z.MAIN.EUS:kernel-rt-debug-kvm-0:5.14.0-284.25.1.rt14.310.el9_2.x86_64", 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