CVE-2021-20268
medium
CVSS v3
—
CVSS v2
—
VIR risk
5.5
Description
An out-of-bounds access flaw was found in the Linux kernel's implementation of the eBPF code verifier in the way a user running the eBPF script calls dev_map_init_map or sock_map_alloc. This flaw allows a local user to crash the system or possibly escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-20268
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-20268.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | affected | | |
| sles | affected | | |
| debian | bookworm | fixed | 5.10.12-1 |
| debian | bullseye | fixed | 5.10.12-1 |
| debian | forky | fixed | 5.10.12-1 |
| debian | sid | fixed | 5.10.12-1 |
| debian | trixie | fixed | 5.10.12-1 |
References
Verify integrity in audit chain (admin only). AS-IS.