CVE-2021-46908

MediumCVSS 5.5/10Last modified Aug 4, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

bpf: Use correct permission flag for mixed signed bounds arithmetic

We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypass_spec_v1 flag instead of allow_ptr_leaks.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected software

VendorProductVersions
LinuxLinux>= 2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366, < 4f3ff11204eac0ee23acf64deecb3bad7b0db0c6; >= 2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366, < 4ccdc6c6cae38b91c871293fb0ed8c6845a61b51; >= 2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366, < 9601148392520e2e134936e76788fc2a6371e7be
LinuxLinux5.8

References

Timeline

Published
Feb 27, 2024
Last modified
Aug 4, 2026
NVD status
Modified

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CVE-2021-46908: Medium severity, CVSS 5.5 | Vulnix