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CVE-2021-33624
CVE information
Published
Last Modified
CVSSv2.0 Severity
CVSSv3.1 Severity
Impact Analysis
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..
CVSSv2.0 Score
- Severity
- Medium
- Base Score
- 4.7/10
- Exploit Score
- 3.4/10
- Access Vector
- Local
- Access Complexity
- Medium
- Authentication Required
- None
- Impact Score
- 6.9/10
- Confidentiality Impact
- Complete
- Availability Impact
- None
- Integrity Impact
- None
CVSSv3.1 Score
- Severity
- Medium
- Base Score
- 4.7/10
- Exploit Score
- 1/10
- Access Vector
- Local
- Access Complexity
- High
- Privileges Required
- Low
- Impact Score
- 3.6/10
- Confidentiality Impact
- High
- Availability Impact
- None
- Integrity Impact
- None
- Scope
- Unchanged
- User Interaction
- None
Products Affected
| CPE | Affected | Vulnerable | Excluding | Edit |
|---|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
Yes
|
- | 5.12.13 | |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
Yes
|
- | - |