CVE-2021-20194
Vulnerability from cvelistv5
Published
2021-02-23 22:33
Modified
2024-08-03 17:30
Severity ?
Summary
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.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1912683Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://security.netapp.com/advisory/ntap-20210326-0003/Third Party Advisory
Impacted products
n/akernel
Show details on NVD website

To clipboard 

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