{ "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": "An update for kernel is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support.\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 packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: smb: client: Fix use-after-free in cifs_fill_dirent (CVE-2025-38051)\n\n* kernel: scsi: qla2xxx: Wait for io return on terminate rport (CVE-2023-53322)\n\n* kernel: scsi: ses: Fix possible desc_ptr out-of-bounds accesses (CVE-2023-53675)\n\n* kernel: i40e: fix idx validation in config queues msg (CVE-2025-39971)\n\n* kernel: libceph: fix potential use-after-free in have_mon_and_osd_map() (CVE-2025-68285)\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.", "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-2026:0643", "url": "https://access.redhat.com/errata/RHSA-2026:0643" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "external", "summary": "2373329", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2373329" }, { "category": "external", "summary": "2395891", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2395891" }, { "category": "external", "summary": "2402293", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2402293" }, { "category": "external", "summary": "2404108", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2404108" }, { "category": "external", "summary": "2422801", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2422801" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_0643.json" } ], "title": "Red Hat Security Advisory: kernel security update", "tracking": { "current_release_date": "2026-06-30T03:31:48+00:00", "generator": { "date": "2026-06-30T03:31:48+00:00", "engine": { "name": "Red Hat SDEngine", "version": "5.3.0" } }, "id": "RHSA-2026:0643", "initial_release_date": "2026-01-15T01:11:08+00:00", "revision_history": [ { "date": "2026-01-15T01:11:08+00:00", "number": "1", "summary": "Initial version" }, { "date": "2026-01-15T01:11:08+00:00", "number": "2", "summary": "Last updated version" }, { "date": "2026-06-30T03:31:48+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", "version": "3" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux BaseOS AUS (v. 8.2)", "product": { "name": "Red Hat Enterprise Linux BaseOS AUS (v. 8.2)", "product_id": "BaseOS-8.2.0.Z.AUS", "product_identification_helper": { "cpe": "cpe:/o:redhat:rhel_aus:8.2::baseos" } } } ], "category": "product_family", "name": "Red Hat Enterprise Linux" }, { "branches": [ { "category": "product_version", "name": "bpftool-0:4.18.0-193.181.1.el8_2.x86_64", "product": { "name": "bpftool-0:4.18.0-193.181.1.el8_2.x86_64", "product_id": "bpftool-0:4.18.0-193.181.1.el8_2.x86_64", "product_identification_helper": { "purl": "pkg:rpm/redhat/bpftool@4.18.0-193.181.1.el8_2?arch=x86_64" } } }, { "category": "product_version", "name": 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When the terminate_rport_io() function is invoked , the driver may exit cleanup before all outstanding I/O operations have returned. This can lead to a use-after-free condition when resources are freed while I/Os are still pending.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: scsi: qla2xxx: Wait for io return on terminate rport", "title": "Vulnerability summary" }, { "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": [ "BaseOS-8.2.0.Z.AUS:bpftool-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:bpftool-debuginfo-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:kernel-0:4.18.0-193.181.1.el8_2.src", "BaseOS-8.2.0.Z.AUS:kernel-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:kernel-abi-whitelists-0:4.18.0-193.181.1.el8_2.noarch", "BaseOS-8.2.0.Z.AUS:kernel-core-0:4.18.0-193.181.1.el8_2.x86_64", 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Missing checks could allow an out-of-bounds access during parsing. \nA local user could use this flaw to crash the system while enclosure data is processed, resulting in a denial of service.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: scsi: ses: Fix possible desc_ptr out-of-bounds accesses", "title": "Vulnerability summary" }, { "category": "other", "text": "The ses_enclosure_data_process() routine did not sufficiently validate descriptor pointer positions before dereferencing them, which could allow the parser to read beyond the buffer when a device or crafted input reports malformed enclosure pages. The fix adds strict pointer and length checks to avoid out-of-bounds accesses.", "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": [ "BaseOS-8.2.0.Z.AUS:bpftool-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:bpftool-debuginfo-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:kernel-0:4.18.0-193.181.1.el8_2.src", "BaseOS-8.2.0.Z.AUS:kernel-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:kernel-abi-whitelists-0:4.18.0-193.181.1.el8_2.noarch", "BaseOS-8.2.0.Z.AUS:kernel-core-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:kernel-debug-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:kernel-debug-core-0:4.18.0-193.181.1.el8_2.x86_64", 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This flaw could allow an attacker to crash the system due to race problem. This vulnerability could even lead to a kernel information leak problem.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: smb: client: Fix use-after-free in cifs_fill_dirent", "title": "Vulnerability summary" }, { "category": "other", "text": "This Moderate impact flaw in the Linux kernel's SMB client (CIFS) can lead to a system crash or information disclosure due to a race problem, leading to a use-after-free vulnerability during directory operations. Red Hat Enterprise Linux 8, 9, and 10 are affected when utilizing the CIFS client functionality.", "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": [ "BaseOS-8.2.0.Z.AUS:bpftool-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:bpftool-debuginfo-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:kernel-0:4.18.0-193.181.1.el8_2.src", "BaseOS-8.2.0.Z.AUS:kernel-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:kernel-abi-whitelists-0:4.18.0-193.181.1.el8_2.noarch", "BaseOS-8.2.0.Z.AUS:kernel-core-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:kernel-debug-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:kernel-debug-core-0:4.18.0-193.181.1.el8_2.x86_64", 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] } ], "threats": [ { "category": "impact", "details": "Moderate" } ], "title": "kernel: i40e: add validation for ring_len param" }, { "cve": "CVE-2025-68285", "cwe": { "id": "CWE-825", "name": "Expired Pointer Dereference" }, "discovery_date": "2025-12-16T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "2422801" } ], "notes": [ { "category": "description", "text": "A use-after-free vulnerability was found in the Ceph client session initialization in the Linux kernel. The have_mon_and_osd_map() function checks map epochs without holding the appropriate locks, racing with concurrent map updates that free the old map. This can result in dereferencing freed memory during CephFS or RBD mount operations.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: libceph: fix potential use-after-free in have_mon_and_osd_map()", "title": "Vulnerability summary" }, { "category": "other", "text": "This race condition occurs during Ceph client session establishment. Exploitation is timing-dependent and requires concurrent map updates during mount, making practical exploitation difficult but not impossible.", "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": [ "BaseOS-8.2.0.Z.AUS:bpftool-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:bpftool-debuginfo-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:kernel-0:4.18.0-193.181.1.el8_2.src", "BaseOS-8.2.0.Z.AUS:kernel-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:kernel-abi-whitelists-0:4.18.0-193.181.1.el8_2.noarch", "BaseOS-8.2.0.Z.AUS:kernel-core-0:4.18.0-193.181.1.el8_2.x86_64", "BaseOS-8.2.0.Z.AUS:kernel-debug-0:4.18.0-193.181.1.el8_2.x86_64", 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