CVE-2020-27170
medium
CVSS v3
—
CVSS v2
—
VIR risk
5.5
Description
An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory, aka CID-f232326f6966. This affects pointer types that do not define a ptr_limit.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-27170
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2020-27170.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 5.10.25-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 5.10.24-1 |
| debian | bullseye | fixed | 5.10.24-1 |
| debian | forky | fixed | 5.10.24-1 |
| debian | sid | fixed | 5.10.24-1 |
| debian | trixie | fixed | 5.10.24-1 |
References
Verify integrity in audit chain (admin only). AS-IS.