Vulnerability Details : CVE-2021-33624

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.
Published 2021-06-23 16:15:08
Updated 2021-11-12 20:15:16
Source MITRE
View at NVD,   CVE.org

Products affected by CVE-2021-33624

Exploit prediction scoring system (EPSS) score for CVE-2021-33624

EPSS FAQ
0.05%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 19 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-33624

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.7
 MEDIUM AV:L/AC:M/Au:N/C:C/I:N/A:N
3.4
6.9
 NIST
4.7
 MEDIUM CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
1.0
3.6
 NIST

CWE ids for CVE-2021-33624

  • The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-33624

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