Vulnerability-Lookup

RHSA-2024:4577

Vulnerability from csaf_redhat - Published: 2024-07-16 15:39 - Updated: 2026-05-04 21:06

Summary

Red Hat Security Advisory: kernel security update

Severity

Important

Notes

Topic: An update for kernel is now available for Red Hat Enterprise Linux 8.2 Advanced 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 packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: GSM multiplexing race condition leads to privilege escalation (CVE-2023-6546) 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.

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.

CVE-2023-6546

A race condition was found in the GSM 0710 tty multiplexor in the Linux kernel. This issue occurs when two threads execute the GSMIOC_SETCONF ioctl on the same tty file descriptor with the gsm line discipline enabled, and can lead to a use-after-free problem on a struct gsm_dlci while restarting the gsm mux. This could allow a local unprivileged user to escalate their privileges on the system.

7.0 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-366 - Race Condition within a Thread

Affected products

Fixed 25 products

Product	Version	Remediation
Unresolved product id: BaseOS-8.2.0.Z.AUS:bpftool-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:bpftool-debuginfo-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-0:4.18.0-193.136.1.el8_2.src	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-abi-whitelists-0:4.18.0-193.136.1.el8_2.noarch	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-core-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-debug-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-debug-core-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-debug-debuginfo-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-debug-devel-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-debug-modules-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-debug-modules-extra-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-debuginfo-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-debuginfo-common-x86_64-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-devel-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-doc-0:4.18.0-193.136.1.el8_2.noarch	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-modules-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-modules-extra-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-tools-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-tools-debuginfo-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:kernel-tools-libs-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:perf-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:perf-debuginfo-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:python3-perf-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: BaseOS-8.2.0.Z.AUS:python3-perf-debuginfo-0:4.18.0-193.136.1.el8_2.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Important

References

10 references

URL	Category
https://access.redhat.com/errata/RHSA-2024:4577	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=2255498	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2023-6546	self
https://bugzilla.redhat.com/show_bug.cgi?id=2255498	external
https://www.cve.org/CVERecord?id=CVE-2023-6546	external
https://nvd.nist.gov/vuln/detail/CVE-2023-6546	external
https://github.com/torvalds/linux/commit/3c4f8333…	external
https://www.zerodayinitiative.com/advisories/ZDI-…	external

JSON

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          "text": "kernel: GSM multiplexing race condition leads to privilege escalation",
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          "text": "This vulnerability is critical because it can be exploited to escalate privileges, directly threatening system security. Despite requiring local access and having a high attack complexity, the potential to severely impact confidentiality, integrity, and availability justifies its \"Important\" rating.",
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          "category": "general",
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          "date": "2024-07-16T15:39:23+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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          "restart_required": {
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          "url": "https://access.redhat.com/errata/RHSA-2024:4577"
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          "details": "This flaw can be mitigated by preventing the affected `n_gsm` kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278.",
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      "scores": [
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            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: GSM multiplexing race condition leads to privilege escalation"
    }
  ]
}

CVE-2023-6546 (GCVE-0-2023-6546)

Vulnerability from cvelistv5 – Published: 2023-12-21 20:01 – Updated: 2026-02-18 17:14

Title

Kernel: gsm multiplexing race condition leads to privilege escalation

Summary

Severity

7 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-366 - Race Condition within a Thread

Assigner

redhat

References

31 references

URL	Tags
https://access.redhat.com/errata/RHSA-2024:0930	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:0937	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1018	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1019	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1055	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1250	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1253	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1306	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1607	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1612	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1614	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:2093	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:2394	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:2621	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:2697	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4577	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4729	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4731	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4970	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2023-6546	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2255498	issue-trackingx_refsource_REDHAT
https://github.com/torvalds/linux/commit/3c4f8333…
https://www.zerodayinitiative.com/advisories/ZDI-…
http://www.openwall.com/lists/oss-security/2024/0…	x_transferred
http://www.openwall.com/lists/oss-security/2024/0…	x_transferred
http://www.openwall.com/lists/oss-security/2024/04/11/7	x_transferred
http://www.openwall.com/lists/oss-security/2024/04/11/9	x_transferred
http://www.openwall.com/lists/oss-security/2024/04/12/1	x_transferred
http://www.openwall.com/lists/oss-security/2024/04/12/2	x_transferred
http://www.openwall.com/lists/oss-security/2024/04/16/2	x_transferred
http://www.openwall.com/lists/oss-security/2024/04/17/1	x_transferred

Impacted products

42 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:4.18.0-513.24.1.rt7.326.el8_9 , < * (rpm) cpe:/a:redhat:enterprise_linux:8::realtime cpe:/a:redhat:enterprise_linux:8::nfv
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:4.18.0-513.24.1.el8_9 , < * (rpm) cpe:/o:redhat:enterprise_linux:8::baseos cpe:/a:redhat:enterprise_linux:8::crb
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8::baseos
Red Hat	Red Hat Enterprise Linux 8.2 Advanced Update Support	Unaffected: 0:4.18.0-193.136.1.el8_2 , < * (rpm) cpe:/o:redhat:rhel_aus:8.2::baseos
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	Unaffected: 0:4.18.0-305.134.1.el8_4 , < * (rpm) cpe:/o:redhat:rhel_aus:8.4::baseos cpe:/o:redhat:rhel_tus:8.4::baseos cpe:/o:redhat:rhel_e4s:8.4::baseos
Red Hat	Red Hat Enterprise Linux 8.4 Telecommunications Update Service	Unaffected: 0:4.18.0-305.134.1.rt7.210.el8_4 , < * (rpm) cpe:/a:redhat:rhel_tus:8.4::nfv cpe:/a:redhat:rhel_tus:8.4::realtime
Red Hat	Red Hat Enterprise Linux 8.4 Telecommunications Update Service	Unaffected: 0:4.18.0-305.134.1.el8_4 , < * (rpm) cpe:/o:redhat:rhel_aus:8.4::baseos cpe:/o:redhat:rhel_tus:8.4::baseos cpe:/o:redhat:rhel_e4s:8.4::baseos
Red Hat	Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions	Unaffected: 0:4.18.0-305.134.1.el8_4 , < * (rpm) cpe:/o:redhat:rhel_aus:8.4::baseos cpe:/o:redhat:rhel_tus:8.4::baseos cpe:/o:redhat:rhel_e4s:8.4::baseos
Red Hat	Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions	cpe:/o:redhat:rhel_e4s:8.4::baseos
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support	Unaffected: 0:4.18.0-372.93.1.el8_6 , < * (rpm) cpe:/o:redhat:rhev_hypervisor:4.4::el8 cpe:/a:redhat:rhel_eus:8.6::crb cpe:/o:redhat:rhel_eus:8.6::baseos
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support	cpe:/o:redhat:rhel_eus:8.6::baseos
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support	Unaffected: 0:4.18.0-477.55.1.el8_8 , < * (rpm) cpe:/a:redhat:rhel_eus:8.8::crb cpe:/o:redhat:rhel_eus:8.8::baseos
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support	cpe:/o:redhat:rhel_eus:8.8::baseos
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:5.14.0-427.13.1.el9_4 , < * (rpm) cpe:/a:redhat:enterprise_linux:9::realtime cpe:/a:redhat:enterprise_linux:9::nfv cpe:/a:redhat:enterprise_linux:9::crb cpe:/o:redhat:enterprise_linux:9::baseos cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support	Unaffected: 0:5.14.0-70.93.2.el9_0 , < * (rpm) cpe:/a:redhat:rhel_eus:9.0::appstream cpe:/o:redhat:rhel_eus:9.0::baseos cpe:/a:redhat:rhel_eus:9.0::crb
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support	Unaffected: 0:5.14.0-70.93.1.rt21.165.el9_0 , < * (rpm) cpe:/a:redhat:rhel_eus:9.0::realtime cpe:/a:redhat:rhel_eus:9.0::nfv
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support	cpe:/o:redhat:rhel_eus:9.0::baseos
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support	Unaffected: 0:5.14.0-284.55.1.el9_2 , < * (rpm) cpe:/a:redhat:rhel_eus:9.2::appstream cpe:/a:redhat:rhel_eus:9.2::crb cpe:/o:redhat:rhel_eus:9.2::baseos
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support	Unaffected: 0:5.14.0-284.55.1.rt14.340.el9_2 , < * (rpm) cpe:/a:redhat:rhel_eus:9.2::realtime cpe:/a:redhat:rhel_eus:9.2::nfv
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support	cpe:/o:redhat:rhel_eus:9.2::baseos
Red Hat	Red Hat Virtualization 4 for Red Hat Enterprise Linux 8	Unaffected: 0:4.18.0-372.93.1.el8_6 , < * (rpm) cpe:/o:redhat:rhev_hypervisor:4.4::el8 cpe:/a:redhat:rhel_eus:8.6::crb cpe:/o:redhat:rhel_eus:8.6::baseos
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v5.7.13-16 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v5.7.13-7 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v6.8.1-408 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v5.7.13-19 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v1.0.0-480 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v5.7.13-9 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v0.4.0-248 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v1.14.6-215 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v6.8.1-431 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v1.1.0-228 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v5.8.1-471 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v2.9.6-15 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v5.7.13-3 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v5.7.13-27 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v5.7.13-12 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v0.1.0-527 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v0.1.0-225 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	RHOL-5.7-RHEL-8	Unaffected: v0.28.1-57 , < * (rpm) cpe:/a:redhat:logging:5.7::el8
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2023-12-21 00:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

RHSA-2024:4577

CVE-2023-6546 (GCVE-0-2023-6546)

Tags

Sightings

Nomenclature