CVEvulnerability
CVE-2021-20268
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-03-09
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 4.6 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-190, CWE-20
Description
An out-of-bounds access flaw was found in the Linux kernel's implementation of the eBPF code verifier in the way a user running the eBPF script calls dev_map_init_map or sock_map_alloc. This flaw allows a local user to crash the system or possibly escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Affected configurations
• linux linux kernel (< 5.10.10)
Related
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1923816 Issue Tracking, Patch, Third Party Advisory
- https://lore.kernel.org/bpf/CACAyw99bEYWJCSGqfLiJ9Jp5YE1ZsZSiJxb4RFUTwbofipf0dA%40mail.gmail.com/T/#m8929643e99bea9c18ed490a7bc2591145eac6444 lore.kernel.org
- https://security.netapp.com/advisory/ntap-20210409-0006/ Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1923816 Issue Tracking, Patch, Third Party Advisory
- https://lore.kernel.org/bpf/CACAyw99bEYWJCSGqfLiJ9Jp5YE1ZsZSiJxb4RFUTwbofipf0dA%40mail.gmail.com/T/#m8929643e99bea9c18ed490a7bc2591145eac6444 lore.kernel.org
- https://security.netapp.com/advisory/ntap-20210409-0006/ Third Party Advisory