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, the pointer modification performed by the first operation is not correctly accounted for when restricting subsequent operations.
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Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2021-04-20T00:00:00
Updated: 2024-08-03T22:02:51.432Z
Reserved: 2021-03-25T00:00:00
Link: CVE-2021-29155
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-04-20T16:15:10.547
Modified: 2024-03-25T01:15:50.787
Link: CVE-2021-29155
Redhat