NULL pointer dereference in Linux kernel - CVE-2024-40951

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Main Vulnerability Database Vulnerabilities #VU94249

NULL pointer dereference in Linux kernel - CVE-2024-40951

Published: July 13, 2024 / Updated: May 13, 2025


Vulnerability identifier: #VU94249
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-40951
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the ocfs2_fill_super() function in fs/ocfs2/super.c, within the to_ocfs2_trigger(), ocfs2_db_frozen_trigger() and __ocfs2_journal_access() functions in fs/ocfs2/journal.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
Ubuntu
openEuler
bpftool
kernel
python3-perf-debuginfo
python3-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-source
kernel-headers
kernel-devel
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
kernel-tools
linux-image-generic (Ubuntu package)
linux-image-generic-64k (Ubuntu package)
linux-image-generic-64k-hwe-24.04 (Ubuntu package)
linux-image-6.8.0-44-generic-64k (Ubuntu package)
linux-image-6.8.0-44-generic (Ubuntu package)
linux-image-generic-hwe-24.04 (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-virtual-hwe-24.04 (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-lowlatency-64k (Ubuntu package)
linux-image-6.8.0-44-lowlatency-64k (Ubuntu package)
linux-image-6.8.0-44-lowlatency (Ubuntu package)
linux-image-lowlatency-hwe-22.04 (Ubuntu package)
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package)
linux-image-oem-22.04b (Ubuntu package)
linux-image-oem-22.04a (Ubuntu package)
linux-image-oem-22.04 (Ubuntu package)
linux-image-generic-hwe-22.04 (Ubuntu package)
linux-image-generic-64k-hwe-22.04 (Ubuntu package)
linux-image-6.8.0-45-generic-64k (Ubuntu package)
linux-image-6.8.0-45-generic (Ubuntu package)
linux-image-oem-22.04c (Ubuntu package)
linux-image-oem-22.04d (Ubuntu package)
linux-image-virtual-hwe-22.04 (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-6.8.0-1010-gke (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-6.8.0-1011-raspi (Ubuntu package)
linux-image-6.8.0-1012-ibm (Ubuntu package)
linux-image-oracle-64k (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-6.8.0-1012-oem (Ubuntu package)
linux-image-6.8.0-1012-oracle (Ubuntu package)
linux-image-6.8.0-1012-oracle-64k (Ubuntu package)
linux-image-ibm-lts-24.04 (Ubuntu package)
linux-image-ibm-classic (Ubuntu package)
linux-image-ibm (Ubuntu package)
linux-image-nvidia (Ubuntu package)
linux-image-nvidia-64k (Ubuntu package)
linux-image-6.8.0-1013-nvidia-64k (Ubuntu package)
linux-image-6.8.0-1013-nvidia (Ubuntu package)
linux-image-nvidia-lowlatency-64k (Ubuntu package)
linux-image-nvidia-lowlatency (Ubuntu package)
linux-image-6.8.0-1013-nvidia-lowlatency-64k (Ubuntu package)
linux-image-6.8.0-1013-nvidia-lowlatency (Ubuntu package)
linux-image-nvidia-6.8 (Ubuntu package)
linux-image-nvidia-64k-6.8 (Ubuntu package)
linux-image-azure-fde (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-6.8.0-1014-azure-fde (Ubuntu package)
linux-image-6.8.0-1014-azure (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-6.8.0-1014-gcp (Ubuntu package)
linux-image-6.8.0-1015-aws (Ubuntu package)
linux-image-aws (Ubuntu package)

How to mitigate CVE-2024-40951

Install update from vendor's website.

Linux kernel - addressed in versions 6.6.36, 6.10
bpftool - update to 6.6.0-35.0.0.43
kernel - update to 6.6.0-35.0.0.43
python3-perf-debuginfo - update to 6.6.0-35.0.0.43
python3-perf - update to 6.6.0-35.0.0.43
perf-debuginfo - update to 6.6.0-35.0.0.43
perf - update to 6.6.0-35.0.0.43
kernel-tools-devel - update to 6.6.0-35.0.0.43
kernel-tools-debuginfo - update to 6.6.0-35.0.0.43
kernel-source - update to 6.6.0-35.0.0.43
kernel-headers - update to 6.6.0-35.0.0.43
kernel-devel - update to 6.6.0-35.0.0.43
kernel-debugsource - update to 6.6.0-35.0.0.43
kernel-debuginfo - update to 6.6.0-35.0.0.43
bpftool-debuginfo - update to 6.6.0-35.0.0.43
kernel-tools - update to 6.6.0-35.0.0.43
linux-image-generic (Ubuntu package) - update to 6.8.0-44.44
linux-image-generic-64k (Ubuntu package) - update to 6.8.0-44.44
linux-image-generic-64k-hwe-24.04 (Ubuntu package) - update to 6.8.0-44.44
linux-image-6.8.0-44-generic-64k (Ubuntu package) - update to 6.8.0-44.44
linux-image-6.8.0-44-generic (Ubuntu package) - update to 6.8.0-44.44
linux-image-generic-hwe-24.04 (Ubuntu package) - update to 6.8.0-44.44
linux-image-generic-lpae (Ubuntu package) - update to 6.8.0-44.44
linux-image-kvm (Ubuntu package) - update to 6.8.0-44.44
linux-image-virtual (Ubuntu package) - update to 6.8.0-44.44
linux-image-virtual-hwe-24.04 (Ubuntu package) - update to 6.8.0-44.44
linux-image-lowlatency (Ubuntu package) - update to 6.8.0-44.44.1
linux-image-lowlatency-64k (Ubuntu package) - update to 6.8.0-44.44.1
linux-image-6.8.0-44-lowlatency-64k (Ubuntu package) - addressed in versions 6.8.0-44.44.1, 6.8.0-44.44.1~22.04.1
linux-image-6.8.0-44-lowlatency (Ubuntu package) - addressed in versions 6.8.0-44.44.1, 6.8.0-44.44.1~22.04.1
linux-image-lowlatency-hwe-22.04 (Ubuntu package) - update to 6.8.0-44.44.1~22.04.1
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package) - update to 6.8.0-44.44.1~22.04.1
linux-image-oem-22.04b (Ubuntu package) - update to 6.8.0-45.45~22.04.1
linux-image-oem-22.04a (Ubuntu package) - update to 6.8.0-45.45~22.04.1
linux-image-oem-22.04 (Ubuntu package) - update to 6.8.0-45.45~22.04.1
linux-image-generic-hwe-22.04 (Ubuntu package) - update to 6.8.0-45.45~22.04.1
linux-image-generic-64k-hwe-22.04 (Ubuntu package) - update to 6.8.0-45.45~22.04.1
linux-image-6.8.0-45-generic-64k (Ubuntu package) - update to 6.8.0-45.45~22.04.1
linux-image-6.8.0-45-generic (Ubuntu package) - update to 6.8.0-45.45~22.04.1
linux-image-oem-22.04c (Ubuntu package) - update to 6.8.0-45.45~22.04.1
linux-image-oem-22.04d (Ubuntu package) - update to 6.8.0-45.45~22.04.1
linux-image-virtual-hwe-22.04 (Ubuntu package) - update to 6.8.0-45.45~22.04.1
linux-image-gke (Ubuntu package) - update to 6.8.0-1010.13
linux-image-6.8.0-1010-gke (Ubuntu package) - update to 6.8.0-1010.13
linux-image-raspi (Ubuntu package) - update to 6.8.0-1011.12
linux-image-6.8.0-1011-raspi (Ubuntu package) - update to 6.8.0-1011.12
linux-image-6.8.0-1012-ibm (Ubuntu package) - update to 6.8.0-1012.12
linux-image-oracle-64k (Ubuntu package) - update to 6.8.0-1012.12
linux-image-oracle (Ubuntu package) - update to 6.8.0-1012.12
linux-image-6.8.0-1012-oem (Ubuntu package) - update to 6.8.0-1012.12
linux-image-6.8.0-1012-oracle (Ubuntu package) - update to 6.8.0-1012.12
linux-image-6.8.0-1012-oracle-64k (Ubuntu package) - update to 6.8.0-1012.12
linux-image-ibm-lts-24.04 (Ubuntu package) - update to 6.8.0-1012.12
linux-image-ibm-classic (Ubuntu package) - update to 6.8.0-1012.12
linux-image-ibm (Ubuntu package) - update to 6.8.0-1012.12
linux-image-nvidia (Ubuntu package) - update to 6.8.0-1013.13
linux-image-nvidia-64k (Ubuntu package) - update to 6.8.0-1013.13
linux-image-6.8.0-1013-nvidia-64k (Ubuntu package) - addressed in versions 6.8.0-1013.14, 6.8.0-1013.14~22.04.1
linux-image-6.8.0-1013-nvidia (Ubuntu package) - addressed in versions 6.8.0-1013.14, 6.8.0-1013.14~22.04.1
linux-image-nvidia-lowlatency-64k (Ubuntu package) - update to 6.8.0-1013.14.1
linux-image-nvidia-lowlatency (Ubuntu package) - update to 6.8.0-1013.14.1
linux-image-6.8.0-1013-nvidia-lowlatency-64k (Ubuntu package) - update to 6.8.0-1013.14.1
linux-image-6.8.0-1013-nvidia-lowlatency (Ubuntu package) - update to 6.8.0-1013.14.1
linux-image-nvidia-6.8 (Ubuntu package) - update to 6.8.0-1013.14~22.04.1
linux-image-nvidia-64k-6.8 (Ubuntu package) - update to 6.8.0-1013.14~22.04.1
linux-image-azure-fde (Ubuntu package) - update to 6.8.0-1014.16
linux-image-azure (Ubuntu package) - update to 6.8.0-1014.16
linux-image-6.8.0-1014-azure-fde (Ubuntu package) - update to 6.8.0-1014.16
linux-image-6.8.0-1014-azure (Ubuntu package) - update to 6.8.0-1014.16
linux-image-gcp (Ubuntu package) - update to 6.8.0-1014.16
linux-image-6.8.0-1014-gcp (Ubuntu package) - update to 6.8.0-1014.16
linux-image-6.8.0-1015-aws (Ubuntu package) - update to 6.8.0-1015.16
linux-image-aws (Ubuntu package) - update to 6.8.0-1015.16

External References

Related Security Bulletins