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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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.7 < 3.16.65
Linux ≫ Linux Kernel Version >= 3.17 < 3.18.133
Linux ≫ Linux Kernel Version >= 3.19 < 4.4.171
Linux ≫ Linux Kernel Version >= 4.5 < 4.9.151
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.94
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.16
Linux ≫ Linux Kernel Version >= 4.20 < 4.20.3
Redhat ≫ Enterprise Linux Version 7.0
Redhat ≫ Enterprise Mrg Version 2.0
Debian ≫ Debian Linux Version 8.0
Canonical ≫ Ubuntu Linux Version 14.04 SwEdition lts
Canonical ≫ Ubuntu Linux Version 16.04 SwEdition lts
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.46% 0.701
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 8 2.1 5.9
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NIST 6.7 5.1 8.5
AV:A/AC:L/Au:S/C:P/I:P/A:C
RedHat 6.5 1.3 4.7
CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H
CWE-416 Use After Free

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://access.redhat.com/errata/RHSA-2019:3517
Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
Third Party Advisory
Mailing List
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
Third Party Advisory
Mailing List
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
Third Party Advisory
Mailing List
https://usn.ubuntu.com/3932-1/
Third Party Advisory
https://usn.ubuntu.com/3932-2/
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2696
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2730
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3309
Third Party Advisory
http://www.securityfocus.com/bid/106253
Third Party Advisory
VDB Entry
https://access.redhat.com/errata/RHSA-2019:1873
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1891
Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0204
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16884
Patch
Third Party Advisory
Issue Tracking
https://patchwork.kernel.org/cover/10733767/
Patch
Vendor Advisory
https://patchwork.kernel.org/patch/10733769/
Patch
Vendor Advisory
https://support.f5.com/csp/article/K21430012
Third Party Advisory
https://usn.ubuntu.com/3980-1/
Third Party Advisory
https://usn.ubuntu.com/3980-2/
Third Party Advisory
https://usn.ubuntu.com/3981-1/
Third Party Advisory
https://usn.ubuntu.com/3981-2/
Third Party Advisory