CVE-2021-4159

Source
https://nvd.nist.gov/vuln/detail/CVE-2021-4159
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-4159.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-4159
Downstream
Related
Published
2022-08-24T16:15:09Z
Modified
2025-08-09T20:01:27Z
Severity
  • 4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

A vulnerability was found in the Linux kernel's EBPF verifier when handling internal data structures. Internal memory locations could be returned to userspace. A local attacker with the permissions to insert eBPF code to the kernel can use this to leak internal kernel memory details defeating some of the exploit mitigations in place for the kernel.

References

Affected packages