FKIE_CVE-2020-16119

Vulnerability from fkie_nvd - Published: 2021-01-14 01:15 - Updated: 2026-06-17 02:57
Severity
6.3 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released. Fixed in Ubuntu Linux kernel 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, 4.4.0-193.224, 3.13.0.182.191 and 3.2.0-149.196.
References
security@ubuntu.comhttps://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=01872cb896c76cedeabe93a08456976ab55ad695Patch, Third Party Advisory
security@ubuntu.comhttps://launchpad.net/bugs/1883840Issue Tracking, Patch, Third Party Advisory
security@ubuntu.comhttps://lists.debian.org/debian-lts-announce/2021/10/msg00010.htmlMailing List, Third Party Advisory
security@ubuntu.comhttps://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlThird Party Advisory
security@ubuntu.comhttps://lore.kernel.org/netdev/20201013171849.236025-1-kleber.souza%40canonical.com/T/
security@ubuntu.comhttps://security.netapp.com/advisory/ntap-20210304-0006/Third Party Advisory
security@ubuntu.comhttps://ubuntu.com/USN-4576-1Third Party Advisory
security@ubuntu.comhttps://ubuntu.com/USN-4577-1Third Party Advisory
security@ubuntu.comhttps://ubuntu.com/USN-4578-1Third Party Advisory
security@ubuntu.comhttps://ubuntu.com/USN-4579-1Third Party Advisory
security@ubuntu.comhttps://ubuntu.com/USN-4580-1Third Party Advisory
security@ubuntu.comhttps://www.debian.org/security/2021/dsa-4978Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=01872cb896c76cedeabe93a08456976ab55ad695Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://launchpad.net/bugs/1883840Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/10/msg00010.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lore.kernel.org/netdev/20201013171849.236025-1-kleber.souza%40canonical.com/T/
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210304-0006/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://ubuntu.com/USN-4576-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://ubuntu.com/USN-4577-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://ubuntu.com/USN-4578-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://ubuntu.com/USN-4579-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://ubuntu.com/USN-4580-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2021/dsa-4978Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel -
canonical ubuntu_linux 12.04
canonical ubuntu_linux 14.04
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.04
canonical ubuntu_linux 20.04
debian debian_linux 9.0
debian debian_linux 11.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Linux kernel",
          "vendor": "Canonical",
          "versions": [
            {
              "lessThan": "5.4.0-51.56",
              "status": "affected",
              "version": "5.4 kernel",
              "versionType": "custom"
            },
            {
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              "status": "affected",
              "version": "5.3 kernel",
              "versionType": "custom"
            },
            {
              "lessThan": "4.15.0-121.123",
              "status": "affected",
              "version": "4.15 kernel",
              "versionType": "custom"
            },
            {
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              "status": "affected",
              "version": "4.4 kernel",
              "versionType": "custom"
            },
            {
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              "status": "affected",
              "version": "3.13 kernel",
              "versionType": "custom"
            },
            {
              "lessThan": "3.2.0-149.196",
              "status": "affected",
              "version": "3.2 kernel",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@ubuntu.com"
    }
  ],
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released. Fixed in Ubuntu Linux kernel 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, 4.4.0-193.224, 3.13.0.182.191 and 3.2.0-149.196."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de uso de la memoria previamente liberada en el kernel de Linux explotable por un atacante local debido a la reutilizaci\u00f3n de un socket DCCP con un objeto dccps_hc_tx_ccid adjunto como oyente despu\u00e9s de ser liberado.\u0026#xa0;Corregido en el kernel de Ubuntu Linux versiones 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, 4.4.0-193.224, 3.13.0.182.191 y 3.2.0-149.196"
    }
  ],
  "id": "CVE-2020-16119",
  "lastModified": "2026-06-17T02:57:44.360",
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        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
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          "accessVector": "LOCAL",
          "authentication": "NONE",
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          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
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        "exploitabilityScore": 3.9,
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        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
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          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H",
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  "published": "2021-01-14T01:15:13.010",
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}



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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.



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.