VDB
DEBIAN-CVE-2021-4001
DEBIAN-CVE-2021-4001
PUBLISHED
CVSS 4.099999904632568 MEDIUM
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.
Risk Scores
CVSS v3.1
4.099999904632568
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | linux | 0, 0, 0 |
| Debian:13 | linux | 0, 0, 0 |
| Debian:12 | linux | 0, 0, 0 |
| Debian:11 | linux | 5.10.70-1, 5.10.70-1~bpo10+1, 0 |
Timeline
- Jan 21, 2022 CVE Published
- Apr 28, 2026 CVE Updated