CVE-2021-29155
Published: 20 April 2021
Summary
CVE-2021-29155 is a medium-severity Out-of-bounds Read (CWE-125) vulnerability in Fedoraproject Fedora. Its CVSS base score is 5.5 (Medium).
Operationally, ranked at the 43.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-15794
Vulnerability details
An issue was discovered in the Linux kernel through 5.11.x. 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. Specifically, for sequences of pointer arithmetic operations,…
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the pointer modification performed by the first operation is not correctly accounted for when restricting subsequent operations.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.