ALT-PU-2022-1117-1

Package update kernel-image-centos in branch sisyphus

Version5.14.0.47-alt1.el9

Published2022-01-22

Max severityMEDIUM

Severity:

Closed issues (2)

MEDIUM4.1

Уязвимость верификатора ebpf компонента bpf_map_update_elem и bpf_map_freeze (kernel/bpf/syscall.c) ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на целостность данных

Published: 2022-09-23Modified: 2024-04-03

CVSS 3.xMEDIUM 4.1

CVSS:3.x/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N

CVSS 2.0MEDIUM 4.4

CVSS:2.0/AV:L/AC:M/Au:S/C:N/I:C/A:N

References

CVE-2021-4001

MEDIUM4.1

A race condition was found in the Linux kernel's ebpf verifier between bpf_map_update_elem and bpf_map_freeze due to a missing lock in kernel/bpf/syscall.c. In this flaw, a local user with a special privilege (cap_sys_admin or cap_bpf) can modify the frozen mapped address space. This flaw affects kernel versions prior to 5.16 rc2.

Published: 2022-01-21Modified: 2024-11-21

CVSS 2.0MEDIUM 4.7

CVSS:2.0/AV:L/AC:M/Au:N/C:N/I:C/A:N

CVSS 3.xMEDIUM 4.1

CVSS:3.x/CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N

References