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…
- 6.5MediumCVSS base score
- 1.5%Exploitation in 30 daysEPSS · top 26% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By redhat
- 3 months later
· 3 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.0 | Medium6.5 | CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H |
| NVDNVD · Modified | 3.1 | High8.0 | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.5% · top 26% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Affected products
References
References22
- 106253 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- [debian-lts-announce] 20190327 [SECURITY] [DLA 1731-1] linux security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [debian-lts-announce] 20190401 [SECURITY] [DLA 1731-2] linux regression update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- USN-3932-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- USN-3932-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [debian-lts-announce] 20190503 [SECURITY] [DLA 1771-1] linux-4.9 security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- USN-3981-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- USN-3980-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- USN-3980-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- USN-3981-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- RHSA-2019:1873 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2019:1891 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2019:2696 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2019:2730 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2019:3309 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2019:3517 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2020:0204 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://www.oracle.com/security-alerts/cpuApr2021.html (opens in a new tab)x_refsource_MISCx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16884 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://patchwork.kernel.org/patch/10733769/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://patchwork.kernel.org/cover/10733767/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.f5.com/csp/article/K21430012 (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2018-8674 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-16884)Record last updated .