CVE-2021-33624
medium
CVSS v3
—
CVSS v2
—
VIR risk
5.5
Description
In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-33624
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-33624.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 5.12.13.hardened1-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 5.10.46-1 |
| debian | bullseye | fixed | 5.10.46-1 |
| debian | forky | fixed | 5.10.46-1 |
| debian | sid | fixed | 5.10.46-1 |
| debian | trixie | fixed | 5.10.46-1 |
References
Verify integrity in audit chain (admin only). AS-IS.