| ID |
CVE-2021-20194
|
| Sažetak |
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. |
| Reference |
|
| CVSS |
| Base: | 4.6 |
| Impact: | 6.4 |
| Exploitability: | 3.9 |
|
| Pristup |
| Vektor | Složenost | Autentikacija |
| LOCAL |
LOW |
NONE |
|
| Impact |
| Povjerljivost | Cjelovitost | Dostupnost |
| PARTIAL |
PARTIAL |
PARTIAL |
|
| CVSS vektor |
AV:L/AC:L/Au:N/C:P/I:P/A:P |
| Zadnje važnije ažuriranje |
12-02-2023 - 22:15 |
| Objavljeno |
23-02-2021 - 23:15 |
