Information Exposure The advisory has been revoked - it doesn't affect any version of package kernel-cross-headers (opens in a new tab)

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1.07% (61^st percentile)

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Snyk IDSNYK-CENTOS8-KERNELCROSSHEADERS-2138697
published26 Jul 2021
disclosed18 Apr 2021

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Introduced: 18 Apr 2021

CVE-2021-29155 (opens in a new tab) CWE-205 (opens in a new tab)

Amendment

The Centos security team deemed this advisory irrelevant for Centos:8.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-cross-headers package and not the kernel-cross-headers package as distributed by Centos.

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.