UBUNTU-CVE-2021-38209
Dashboard / Vulnerabilities / UBUNTU-CVE-2021-38209
Summary:
Details: net/netfilter/nf_conntrack_standalone.c in the Linux kernel before 5.12.2 allows observation of changes in any net namespace because these changes are leaked into all other net namespaces. This is related to the NF_SYSCTL_CT_MAX, NF_SYSCTL_CT_EXPECT_MAX, and NF_SYSCTL_CT_BUCKETS sysctls.
References: https://ubuntu.com/security/CVE-2021-38209, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.2, https://github.com/torvalds/linux/commit/2671fa4dc0109d3fb581bc3078fdf17b5d9080f6, https://www.cve.org/CVERecord?id=CVE-2021-38209
Affected packages
Package
Name: linux-hwe-edge
Purl: pkg:deb/ubuntu/[email protected]~16.04.1?arch=source&distro=xenial
Affected ranges
Type: ECOSYSTEM
Events:
Introduced- 0
Fixed -None
Affected versions
4.8.0-28.30~16.04.1
4.8.0-30.32~16.04.1
4.8.0-32.34~16.04.1
4.8.0-34.36~16.04.1
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
