CVE-2021-20268
HIGHLinux Kernel < 5.10.10 - Out-of-Bounds Access in eBPF Verifier via dev_map_init_map or sock_map_alloc
Title source: llmDescription
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.
References (3)
Core 3
Core References
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1923816
Mailing List x_refsource_misc
https://lore.kernel.org/bpf/CACAyw99bEYWJCSGqfLiJ9Jp5YE1ZsZSiJxb4RFUTwbofipf0dA%40mail.gmail.com/T/#m8929643e99bea9c18ed490a7bc2591145eac6444
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210409-0006/
Scores
CVSS v3
7.8
EPSS
0.0032
EPSS Percentile
23.7%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-190
CWE-20
Status
published
Products (1)
linux/linux_kernel
< 5.10.10
Published
Mar 09, 2021
Tracked Since
Feb 18, 2026