Vulnerability-Lookup

OESA-2023-1990 (CVE-2023-6546)

Vulnerability from osv_openeuler – Published: 2023-12-29 11:06 – Updated: 2026-08-06 11:06 – Source website

Summary

kernel security update

Details

The Linux Kernel, the operating system core itself.

Security Fix(es):

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.(CVE-2023-6546)

Severity

7.8 (High)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-6546	ADVISORY

JSON

To clipboard

{
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          "type": "ECOSYSTEM"
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  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "The Linux Kernel, the operating system core itself.\r\n\r\nSecurity Fix(es):\r\n\r\nA 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.(CVE-2023-6546)",
  "id": "OESA-2023-1990",
  "modified": "2026-08-06T11:06:26Z",
  "published": "2023-12-29T11:06:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1990"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-6546"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "kernel security update",
  "upstream": [
    "CVE-2023-6546"
  ]
}

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

Vulnerability from cvelistv5 – Published: 2023-12-21 20:01 – Updated: 2026-08-06 19:08

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 redhat root

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::nfv cpe:/a:redhat:enterprise_linux:8::realtime
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:4.18.0-513.24.1.el8_9 , < * (rpm) cpe:/a:redhat:enterprise_linux:8::crb cpe:/o:redhat:enterprise_linux:8::baseos
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_e4s:8.4::baseos cpe:/o:redhat:rhel_tus: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_e4s:8.4::baseos cpe:/o:redhat:rhel_tus: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_e4s:8.4::baseos cpe:/o:redhat:rhel_tus: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:/a:redhat:rhel_eus:8.6::crb cpe:/o:redhat:rhel_eus:8.6::baseos cpe:/o:redhat:rhev_hypervisor:4.4::el8
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::appstream cpe:/a:redhat:enterprise_linux:9::crb cpe:/a:redhat:enterprise_linux:9::nfv cpe:/a:redhat:enterprise_linux:9::realtime cpe:/o:redhat:enterprise_linux:9::baseos
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:/a:redhat:rhel_eus:9.0::crb cpe:/o:redhat:rhel_eus:9.0::baseos
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::nfv cpe:/a:redhat:rhel_eus:9.0::realtime
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::nfv cpe:/a:redhat:rhel_eus:9.2::realtime
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:/a:redhat:rhel_eus:8.6::crb cpe:/o:redhat:rhel_eus:8.6::baseos cpe:/o:redhat:rhev_hypervisor:4.4::el8
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

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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OESA-2023-1990 (CVE-2023-6546)

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

Tags

Sightings

Nomenclature

Related by attack behaviour