CVE-2021-46908

HIGH

Linux kernel - Mixed Signed Bounds Arithmetic Permission Issue

Title source: llm

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.

References (3)

Core 3

Core References

Patch

https://git.kernel.org/stable/c/4f3ff11204eac0ee23acf64deecb3bad7b0db0c6

Patch

https://git.kernel.org/stable/c/4ccdc6c6cae38b91c871293fb0ed8c6845a61b51

Patch

https://git.kernel.org/stable/c/9601148392520e2e134936e76788fc2a6371e7be

Scores

CVSS v3 7.1

EPSS 0.0024

EPSS Percentile 15.2%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

Status published

Products (9)

Linux/Linux < 5.8

Linux/Linux 2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 - 4ccdc6c6cae38b91c871293fb0ed8c6845a61b51

Linux/Linux 2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 - 4f3ff11204eac0ee23acf64deecb3bad7b0db0c6

Linux/Linux 2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 - 9601148392520e2e134936e76788fc2a6371e7be

Linux/Linux 5.10.32 - 5.10.*

Linux/Linux 5.11.16 - 5.11.*

Linux/Linux 5.12

Linux/Linux 5.8

linux/linux_kernel 5.8.0 - 5.10.32

Published Feb 27, 2024

Tracked Since Feb 18, 2026