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
| Link | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1912683 | Issue Tracking Patch Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210326-0003/ | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1912683 | Issue Tracking Patch Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210326-0003/ | Third Party Advisory |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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History
21 Nov 2024, 05:46
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=1912683 - Issue Tracking, Patch, Third Party Advisory | |
| References | () https://security.netapp.com/advisory/ntap-20210326-0003/ - Third Party Advisory |
05 Aug 2022, 18:07
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-787 |
Information
Published : 2021-02-23 23:15
Updated : 2024-11-21 05:46
NVD link : CVE-2021-20194
Mitre link : CVE-2021-20194
CVE.ORG link : CVE-2021-20194
JSON object : View
Products Affected
redhat
- openshift_container_platform
- enterprise_linux
linux
- linux_kernel