rhsa-2023_1584
Vulnerability from csaf_redhat
Published
2023-04-04 09:08
Modified
2024-11-15 13:27
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 8.
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: stack overflow in do_proc_dointvec and proc_skip_spaces (CVE-2022-4378)
* ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266)
* kernel: FUSE filesystem low-privileged user privileges escalation (CVE-2023-0386)
* kernel: net: CPU soft lockup in TC mirred egress-to-ingress action (CVE-2022-4269)
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):
* Lazy irq_work does not raise softirq on PREEMPT_RT [rhel-8] (BZ#2172163)
* The latest RHEL 8.7.z3 kernel changes need to be merged into the RT source tree to keep source parity between the two kernels. (BZ#2172278)
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.
{ 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-rt is now available for Red Hat Enterprise Linux 8.\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: stack overflow in do_proc_dointvec and proc_skip_spaces (CVE-2022-4378)\n\n* ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266)\n\n* kernel: FUSE filesystem low-privileged user privileges escalation (CVE-2023-0386)\n\n* kernel: net: CPU soft lockup in TC mirred egress-to-ingress action (CVE-2022-4269)\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* Lazy irq_work does not raise softirq on PREEMPT_RT [rhel-8] (BZ#2172163)\n\n* The latest RHEL 8.7.z3 kernel changes need to be merged into the RT source tree to keep source parity between the two kernels. (BZ#2172278)", 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-2023:1584", url: "https://access.redhat.com/errata/RHSA-2023:1584", }, { category: "external", summary: "https://access.redhat.com/security/updates/classification/#important", url: "https://access.redhat.com/security/updates/classification/#important", }, { category: "external", summary: "2150272", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2150272", }, { category: "external", summary: "2152548", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2152548", }, { category: "external", summary: "2159505", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2159505", }, { category: "external", summary: "2163379", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2163379", }, { category: "self", summary: "Canonical URL", url: "https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_1584.json", }, ], title: "Red Hat Security Advisory: kernel-rt security and bug fix update", tracking: { current_release_date: "2024-11-15T13:27:03+00:00", generator: { date: "2024-11-15T13:27:03+00:00", engine: { name: "Red Hat SDEngine", version: "4.2.1", }, }, id: "RHSA-2023:1584", initial_release_date: "2023-04-04T09:08:03+00:00", revision_history: [ { date: "2023-04-04T09:08:03+00:00", number: "1", summary: "Initial version", }, { date: "2023-04-04T09:08:03+00:00", number: "2", summary: "Last updated version", }, { date: "2024-11-15T13:27:03+00:00", number: "3", summary: "Last generated 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"description", text: "A flaw was found in the Linux kernel Traffic Control (TC) subsystem. Using a specific networking configuration (redirecting egress packets to ingress using TC action \"mirred\") a local unprivileged user could trigger a CPU soft lockup (ABBA deadlock) when the transport protocol in use (TCP or SCTP) does a retransmission, resulting in a denial of service condition.", title: "Vulnerability description", }, { category: "summary", text: "kernel: net: CPU soft lockup in TC mirred egress-to-ingress action", title: "Vulnerability summary", }, { category: "other", text: "Red Hat Enterprise Linux 6 is not affected by this flaw as it did not include upstream commit 53592b3 (\"net/sched: act_mirred: Implement ingress actions\").", 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: [ 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In this flaw a normal privileged, local attacker may impact the system due to a locking issue in the compat path, leading to a kernel information leak problem.", title: "Vulnerability description", }, { category: "summary", text: "ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF", 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: [ "NFV-8.7.0.Z.MAIN:kernel-rt-0:4.18.0-425.19.2.rt7.230.el8_7.src", "NFV-8.7.0.Z.MAIN:kernel-rt-0:4.18.0-425.19.2.rt7.230.el8_7.x86_64", "NFV-8.7.0.Z.MAIN:kernel-rt-core-0:4.18.0-425.19.2.rt7.230.el8_7.x86_64", "NFV-8.7.0.Z.MAIN:kernel-rt-debug-0:4.18.0-425.19.2.rt7.230.el8_7.x86_64", "NFV-8.7.0.Z.MAIN:kernel-rt-debug-core-0:4.18.0-425.19.2.rt7.230.el8_7.x86_64", 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E. Shaw Group", ], }, ], cve: "CVE-2023-0386", cwe: { id: "CWE-282", name: "Improper Ownership Management", }, discovery_date: "2022-12-21T00:00:00+00:00", ids: [ { system_name: "Red Hat Bugzilla ID", text: "2159505", }, ], notes: [ { category: "description", text: "A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. 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Sightings
Author | Source | Type | Date |
---|
Nomenclature
- 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.