CVE-2024-43837

2024-08-1913:16:06

redhat.com

access.redhat.com

linux kernel

cve-2024-43837

null pointer dereference

bpf_prog_type_ext

resolve_prog_type

vulnerability fix

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

5.9

Confidence

High

EPSS

Percentile

5.0%

JSON

A flaw was found in the Linux kernel. This issue occurs in the BPF subsystem when loading BPF_PROG_TYPE_EXT programs without specifying attr->attach_prog_fd, causing a null pointer dereference in resolve_prog_type(). The issue was introduced in a commit that incorrectly resolved program types without checking if dst_prog was null.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.