What is CVE-2024-40996?

CVE-2024-40996 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2024-40996 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-40996?

CVE-2024-40996 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2024-40996?

No patch is currently available for CVE-2024-40996. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2024-40996 actively exploited?

CVE-2024-40996 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-40996

High

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'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'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't need the extra check because pskb_may_pull will do the right thing: return an error without the WARN() backtrace.

Package Linux Kernel

Published 2024-07-12

Last modified 2025-11-03

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

References

The following references provide additional information about CVE-2024-40996 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Kernel patch commit
https://git.kernel.org/stable/c/2bbe3e5a2f4ef69d13be54f1cf895b4658287080
Patch
Kernel patch commit
https://git.kernel.org/stable/c/5e90258303a358e88737afb5048bee9113beea3a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/7f9644782c559635bd676c12c59389a34ed7c866
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2024-40996

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-07-12

Modified 2025-11-03

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2024-40996?

CVE-2024-40996 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2024-40996 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-40996?

CVE-2024-40996 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2024-40996?

No patch is currently available for CVE-2024-40996. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2024-40996 actively exploited?

No — CVE-2024-40996 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.