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CVE-2016-2543 (GCVE-0-2016-2543)

Vulnerability from cvelistv5 – Published: 2016-04-27 17:00 – Updated: 2024-08-05 23:32
VLAI
Summary
The snd_seq_ioctl_remove_events function in sound/core/seq/seq_clientmgr.c in the Linux kernel before 4.4.1 does not verify FIFO assignment before proceeding with FIFO clearing, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted ioctl call.
Severity
6.2 (Medium)
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
References
URL Tags
http://www.ubuntu.com/usn/USN-2930-1 vendor-advisoryx_refsource_UBUNTU
http://git.kernel.org/cgit/linux/kernel/git/torva… x_refsource_CONFIRM
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http://www.kernel.org/pub/linux/kernel/v4.x/Chang… x_refsource_CONFIRM
http://www.ubuntu.com/usn/USN-2930-2 vendor-advisoryx_refsource_UBUNTU
https://github.com/torvalds/linux/commit/030e2c78… x_refsource_CONFIRM
http://www.debian.org/security/2016/dsa-3503 vendor-advisoryx_refsource_DEBIAN
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https://bugzilla.redhat.com/show_bug.cgi?id=1311554 x_refsource_CONFIRM
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http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
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http://www.securitytracker.com/id/1035304 vdb-entryx_refsource_SECTRACK
http://www.ubuntu.com/usn/USN-2929-2 vendor-advisoryx_refsource_UBUNTU
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
Date Public
2016-01-19 00:00
Show details on NVD website
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      "vulnStatus": "Modified",
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          "source": "nvd@nist.gov",
          "type": "Primary"
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    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
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                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "8B458ACF-17C3-4551-9F11-8D02B6D52B7C",
                    "versionEndIncluding": "4.4",
                    "vulnerable": true
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                "negate": false,
                "operator": "OR"
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "The snd_seq_ioctl_remove_events function in sound/core/seq/seq_clientmgr.c in the Linux kernel before 4.4.1 does not verify FIFO assignment before proceeding with FIFO clearing, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted ioctl call."
          },
          {
            "lang": "es",
            "value": "La funci\u00f3n snd_seq_ioctl_remove_events en sound/core/seq/seq_clientmgr.c en el kernel de Linux en versiones anteriores a 4.4.1 no verifica la asignaci\u00f3n FIFO antes de proceder con la limpieza FIFO, lo que permite a usuarios locales causar una denegaci\u00f3n de servicio (referencia a puntero NULL y OOPS) a trav\u00e9s de una llamada ioctl manipulada."
          }
        ],
        "evaluatorComment": "\u003ca href=\"http://cwe.mitre.org/data/definitions/476.html\"\u003eCWE-476: NULL Pointer Dereference\u003c/a\u003e",
        "id": "CVE-2016-2543",
        "lastModified": "2026-05-06T22:30:45.220",
        "metrics": {
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              "baseSeverity": "MEDIUM",
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                "baseScore": 4.9,
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              "exploitabilityScore": 3.9,
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              "obtainOtherPrivilege": false,
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                "baseScore": 6.2,
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                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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              "exploitabilityScore": 2.5,
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        "published": "2016-04-27T17:59:12.913",
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    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T12:05:51+00:00",
      "cve": "CVE-2016-2543",
      "id": "CVE-2016-2543",
      "initial_release_date": "2016-01-19T00:00:00+00:00",
      "product_status:known_affected": "55",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: sound: GPF in snd_seq_fifo_clear",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-2543.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-05T01:24:23Z",
      "cve": "CVE-2016-2543",
      "id": "CVE-2016-2543",
      "initial_release_date": "2023-02-15T05:05:45Z",
      "product_status:known_not_affected": "149",
      "product_status:recommended": "185",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2016-2543",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2016-2543.json",
      "version": "18"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.