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.
Published 2018-12-18 22:29:05
Updated 2023-08-11 19:12:44
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: Memory CorruptionGain privilege

Exploit prediction scoring system (EPSS) score for CVE-2018-16884

0.06%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 26 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-16884

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.7
MEDIUM AV:A/AC:L/Au:S/C:P/I:P/A:C
5.1
8.5
NIST
6.5
MEDIUM CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H
1.3
4.7
Red Hat, Inc.
8.0
HIGH CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.1
5.9
NIST

CWE ids for CVE-2018-16884

  • Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
    Assigned by:
    • nvd@nist.gov (Secondary)
    • secalert@redhat.com (Primary)

References for CVE-2018-16884

Products affected by CVE-2018-16884

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