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CVE-2018-16884 (GCVE-0-2018-16884)

Vulnerability from cvelistv5 – Published: 2018-12-18 22:00 – Updated: 2024-08-05 10:32
VLAI
Summary
A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel IDs and cause a use-after-free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.
CWE
References
URL Tags
http://www.securityfocus.com/bid/106253 vdb-entryx_refsource_BID
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://usn.ubuntu.com/3932-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3932-2/ vendor-advisoryx_refsource_UBUNTU
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://usn.ubuntu.com/3981-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3980-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3980-2/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3981-2/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2019:1873 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:1891 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:2696 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:2730 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3309 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3517 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0204 vendor-advisoryx_refsource_REDHAT
https://www.oracle.com/security-alerts/cpuApr2021.html x_refsource_MISC
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… x_refsource_CONFIRM
https://patchwork.kernel.org/patch/10733769/ x_refsource_CONFIRM
https://patchwork.kernel.org/cover/10733767/ x_refsource_CONFIRM
https://support.f5.com/csp/article/K21430012 x_refsource_CONFIRM
Impacted products
Vendor Product Version CPE status
[UNKNOWN] kernel: Affected: n/a
guessed Create a notification for this product.
Date Public
2018-12-18 00:00
Show details on NVD website

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            "url": "https://www.oracle.com/security-alerts/cpuApr2021.html"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
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              {
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                "value": "CWE-416"
              }
            ],
            "source": "secalert@redhat.com",
            "type": "Primary"
          },
          {
            "description": [
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                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-06-28T11:51:24+00:00",
      "cve": "CVE-2018-16884",
      "id": "CVE-2018-16884",
      "initial_release_date": "2018-11-27T00:00:00+00:00",
      "product_status:fixed": "543",
      "product_status:known_not_affected": "16",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nfs: use-after-free in svc_process_common()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-16884.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-08-31T08:38:16Z",
      "cve": "CVE-2018-16884",
      "id": "CVE-2018-16884",
      "initial_release_date": "2023-02-15T04:23:50Z",
      "product_status:known_affected": "180",
      "product_status:known_not_affected": "197",
      "product_status:recommended": "838",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2018-16884",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2018-16884.json",
      "version": "23"
    }
  }
}



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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.

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Detection rules are retrieved from Rulezet.

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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.


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