CVE Database›CVE-2020-0430

CVE-2020-0430

kernel: possible out-of-bounds read in skb_headlen of /include/linux/skbuff.h

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Severity

Moderate

Red Hat Product Security

7.8

CVSS 3.1

Review impact separately from score.

Published · September 8, 2020

Updated · June 28, 2026

Description

An out of bounds memory read flaw was found in the Linux kernel’s implementation of the eBPF code verifier. A user passing corrupted data to a helper function could access data inside the adjust_ptr_min_max_vals() function. By default, the eBPF verifier is only accessible to users with CAP_SYS_ADMIN privileges. The lack of proper validation of user-supplied eBPF programs prior to execution is the cause of this issue which could lead to a local user's ability to crash the system or possibly escalate their privileges on the system.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-125 · Out-of-bounds Read