SARA / Free Tools / CVE / CVE-2018-16884

CVE-2018-16884 — A flaw was found in the Linux kernel's NFS41+ subsystem

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 ker

CVSS
6.5 MEDIUM
EPSS
0.05% (top 85.30%)
CWE
CWE-416
Published
2018-12-18T22:00:00.000Z
Last modified
2024-08-05T10:32:54.149Z
CVSS vector
CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H

01What is this vulnerability?

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.

02Affected products

VendorProductVersions
[UNKNOWN]kernel:n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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