Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2021-20194

There is a vulnerability in the linux kernel versions higher than 5.2 (if kernel compiled with config params CONFIG_BPF_SYSCALL=y , CONFIG_BPF=y , CONFIG_CGROUPS=y , CONFIG_CGROUP_BPF=y , CONFIG_HARDENED_USERCOPY not set, and BPF hook to getsockopt is registered). As result of BPF execution, the local user can trigger bug in __cgroup_bpf_run_filter_getsockopt() function that can lead to heap overflow (because of non-hardened usercopy). The impact of attack could be deny of service or possibly privileges escalation.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 30.0%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 4.6
Products affected by CVE-2021-20194


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