Not rated
CVE-2021-4001 A race condition was found in the Linux kernel's ebpf verifier between bpf_map_update_elem and bpf_map_freeze due to a…
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| kernel | Versions not published |
References
- bugzilla.redhat.com bugzilla.redhat.com
- git.kernel.org git.kernel.org
Timeline
- Published
- Last modified
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