Riskcovery

CVE-2021-46908

bpf: Use correct permission flag for mixed signed bounds arithmetic

State
Published
Severity
7.1 High
Published
Feb 27, 2024
Updated
Aug 5, 2026
Reserved
Feb 25, 2024

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 to before 4f3ff11204eac0ee23acf64deecb3bad7b0db0c6Affected
  • 2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 to before 4ccdc6c6cae38b91c871293fb0ed8c6845a61b51Affected
  • 2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 to before 9601148392520e2e134936e76788fc2a6371e7beAffected
LinuxLinux
  • 5.8Affected
  • before 5.8Not affected
  • 5.10.32 through 5.10.*Not affected
  • 5.11.16 through 5.11.*Not affected
  • 5.12 and laterNot affected

References

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