Vulnerability Details : CVE-2018-16884

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

Products affected by CVE-2018-16884

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

EPSS FAQ
0.09%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 23 %
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

  • The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
    Assigned by:
    • nvd@nist.gov (Secondary)
    • secalert@redhat.com (Primary)

References for CVE-2018-16884

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