6.7 Medium
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
COMPLETE
AV:A/AC:L/Au:S/C:P/I:P/A:C
8 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.1 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
28.1%
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.
www.securityfocus.com/bid/106253
access.redhat.com/errata/RHSA-2019:1873
access.redhat.com/errata/RHSA-2019:1891
access.redhat.com/errata/RHSA-2019:2696
access.redhat.com/errata/RHSA-2019:2730
access.redhat.com/errata/RHSA-2019:3309
access.redhat.com/errata/RHSA-2019:3517
access.redhat.com/errata/RHSA-2020:0204
bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16884
lists.debian.org/debian-lts-announce/2019/03/msg00034.html
lists.debian.org/debian-lts-announce/2019/04/msg00004.html
lists.debian.org/debian-lts-announce/2019/05/msg00002.html
patchwork.kernel.org/cover/10733767/
patchwork.kernel.org/patch/10733769/
support.f5.com/csp/article/K21430012
usn.ubuntu.com/3932-1/
usn.ubuntu.com/3932-2/
usn.ubuntu.com/3980-1/
usn.ubuntu.com/3980-2/
usn.ubuntu.com/3981-1/
usn.ubuntu.com/3981-2/
www.oracle.com/security-alerts/cpuApr2021.html
6.7 Medium
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
COMPLETE
AV:A/AC:L/Au:S/C:P/I:P/A:C
8 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.1 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
28.1%