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cvelistMitreCVELIST:CVE-2021-31829
HistoryMay 06, 2021 - 3:43 p.m.

CVE-2021-31829

2021-05-0615:43:01
mitre
www.cve.org

6.2 Medium

AI Score

Confidence

High

0.0005 Low

EPSS

Percentile

16.3%

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can contain uninitialized data that might represent sensitive information previously operated on by the kernel.