CVE-2024-40996

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

12/07/2024

Last modified:

03/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Avoid splat in pskb_pull_reason syzkaller builds (CONFIG_DEBUG_NET=y) frequently trigger a debug hint in pskb_may_pull. We&#39;d like to retain this debug check because it might hint at integer overflows and other issues (kernel code should pull headers, not huge value). In bpf case, this splat isn&#39;t interesting at all: such (nonsensical) bpf programs are typically generated by a fuzzer anyway. Do what Eric suggested and suppress such warning. For CONFIG_DEBUG_NET=n we don&#39;t need the extra check because pskb_may_pull will do the right thing: return an error without the WARN() backtrace.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

7.80

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	6.1.86 (including)	6.1.96 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.6.27 (including)	6.6.36 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.9 (including)	6.9.7 (excluding)
cpe:2.3:o:linux:linux_kernel:6.10:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.10:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.10:rc3::::::
cpe:2.3:o:linux:linux_kernel:6.10:rc4::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2024-40996

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools