rhsa-2023_4138
Vulnerability from csaf_redhat
Published
2023-07-18 08:31
Modified
2024-11-06 03:20
Summary
Red Hat Security Advisory: kernel-rt security and bug fix update
Notes
Topic
An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0 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.
Details
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c (CVE-2022-42896)
* kernel: use-after-free vulnerability in the perf_group_detach function of the Linux Kernel Performance Events (CVE-2023-2235)
* kernel: uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM (CVE-2022-1016)
* kernel: use-after-free related to leaf anon_vma double reuse (CVE-2022-42703)
* Kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)
* kernel: OOB access in the Linux kernel's XFS subsystem (CVE-2023-2124)
For 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.
Bug Fix(es):
* kernel-rt: update RT source tree to the latest RHEL-9.0.z10 Batch (BZ#2209984)
Terms of Use
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.
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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: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c (CVE-2022-42896)\n\n* kernel: use-after-free vulnerability in the perf_group_detach function of the Linux Kernel Performance Events (CVE-2023-2235)\n\n* kernel: uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM (CVE-2022-1016)\n\n* kernel: use-after-free related to leaf anon_vma double reuse (CVE-2022-42703)\n\n* Kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)\n\n* kernel: OOB access in the Linux kernel\u0027s XFS subsystem (CVE-2023-2124)\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* kernel-rt: update RT source tree to the latest RHEL-9.0.z10 Batch (BZ#2209984)", "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-2023:4138", "url": "https://access.redhat.com/errata/RHSA-2023:4138" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "external", "summary": "2066614", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2066614" }, { "category": "external", "summary": "2133483", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2133483" }, { "category": "external", "summary": "2147364", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2147364" }, { "category": "external", "summary": "2187308", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2187308" }, { "category": "external", "summary": "2187439", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2187439" }, { "category": "external", "summary": "2192589", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2192589" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_4138.json" } ], "title": "Red Hat Security Advisory: kernel-rt security and bug fix update", "tracking": { "current_release_date": "2024-11-06T03:20:57+00:00", "generator": { "date": "2024-11-06T03:20:57+00:00", "engine": { "name": "Red Hat SDEngine", "version": "4.1.1" } }, "id": "RHSA-2023:4138", "initial_release_date": "2023-07-18T08:31:22+00:00", 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use-after-free. This issue needs to handle \u0027return\u0027 with proper preconditions, as it can lead to a kernel information leak problem caused by a local, unprivileged attacker.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "NFV-9.0.0.Z.EUS:kernel-rt-0:5.14.0-70.64.1.rt21.135.el9_0.src", "NFV-9.0.0.Z.EUS:kernel-rt-0:5.14.0-70.64.1.rt21.135.el9_0.x86_64", "NFV-9.0.0.Z.EUS:kernel-rt-core-0:5.14.0-70.64.1.rt21.135.el9_0.x86_64", "NFV-9.0.0.Z.EUS:kernel-rt-debug-0:5.14.0-70.64.1.rt21.135.el9_0.x86_64", 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The VMA mm/rmap.c functionality in the is_mergeable_anon_vma() function continuously forks, using memory operations to trigger an incorrect reuse of leaf anon_vma. This issue allows a local attacker to crash the system.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: use-after-free related to leaf anon_vma double reuse", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "NFV-9.0.0.Z.EUS:kernel-rt-0:5.14.0-70.64.1.rt21.135.el9_0.src", "NFV-9.0.0.Z.EUS:kernel-rt-0:5.14.0-70.64.1.rt21.135.el9_0.x86_64", "NFV-9.0.0.Z.EUS:kernel-rt-core-0:5.14.0-70.64.1.rt21.135.el9_0.x86_64", "NFV-9.0.0.Z.EUS:kernel-rt-debug-0:5.14.0-70.64.1.rt21.135.el9_0.x86_64", "NFV-9.0.0.Z.EUS:kernel-rt-debug-core-0:5.14.0-70.64.1.rt21.135.el9_0.x86_64", "NFV-9.0.0.Z.EUS:kernel-rt-debug-debuginfo-0:5.14.0-70.64.1.rt21.135.el9_0.x86_64", 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"system_name": "Red Hat Bugzilla ID", "text": "2147364" } ], "notes": [ { "category": "description", "text": "A use-after-free flaw was found in the Linux kernel\u0027s implementation of logical link control and adaptation protocol (L2CAP), part of the Bluetooth stack in the l2cap_connect and l2cap_le_connect_req functions. An attacker with physical access within the range of standard Bluetooth transmission could execute code leaking kernel memory via Bluetooth if within proximity of the victim.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "NFV-9.0.0.Z.EUS:kernel-rt-0:5.14.0-70.64.1.rt21.135.el9_0.src", "NFV-9.0.0.Z.EUS:kernel-rt-0:5.14.0-70.64.1.rt21.135.el9_0.x86_64", "NFV-9.0.0.Z.EUS:kernel-rt-core-0:5.14.0-70.64.1.rt21.135.el9_0.x86_64", "NFV-9.0.0.Z.EUS:kernel-rt-debug-0:5.14.0-70.64.1.rt21.135.el9_0.x86_64", 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"cwe": { "id": "CWE-250", "name": "Execution with Unnecessary Privileges" }, "discovery_date": "2023-04-17T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "2187308" } ], "notes": [ { "category": "description", "text": "A vulnerability was found in the HCI sockets implementation due to a missing capability check in net/bluetooth/hci_sock.c in the Linux Kernel. This flaw allows an attacker to unauthorized execution of management commands, compromising the confidentiality, integrity, and availability of Bluetooth communication.", "title": "Vulnerability description" }, { "category": "summary", "text": "Kernel: bluetooth: Unauthorized management command execution", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "NFV-9.0.0.Z.EUS:kernel-rt-0:5.14.0-70.64.1.rt21.135.el9_0.src", "NFV-9.0.0.Z.EUS:kernel-rt-0:5.14.0-70.64.1.rt21.135.el9_0.x86_64", "NFV-9.0.0.Z.EUS:kernel-rt-core-0:5.14.0-70.64.1.rt21.135.el9_0.x86_64", "NFV-9.0.0.Z.EUS:kernel-rt-debug-0:5.14.0-70.64.1.rt21.135.el9_0.x86_64", 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"summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2023-2124" }, { "category": "external", "summary": "RHBZ#2187439", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2187439" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2023-2124", "url": "https://www.cve.org/CVERecord?id=CVE-2023-2124" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-2124", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-2124" }, { "category": "external", "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/xfs/xfs_buf_item_recover.c?h=v6.4-rc1\u0026id=22ed903eee23a5b174e240f1cdfa9acf393a5210", "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/xfs/xfs_buf_item_recover.c?h=v6.4-rc1\u0026id=22ed903eee23a5b174e240f1cdfa9acf393a5210" }, { "category": "external", "summary": 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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.