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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.

🗓️ 13 Aug 2021 07:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 10 Views

Kernel netfilter conntrack leak exposes changes across all net namespaces via specific sysctls.

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Detection
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16 Dec 2021 08:00Current
6.8Medium risk
Vulners AI Score6.8
CVSS 22.1
CVSS 3.13.3
EPSS0.00283
10