NULL pointer dereference in Linux kernel - CVE-2025-38050

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Main Vulnerability Database Vulnerabilities #VU111554

NULL pointer dereference in Linux kernel - CVE-2025-38050

Published: June 20, 2025


Vulnerability identifier: #VU111554
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-2025-38050
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 replace_free_hugepage_folios() function in mm/hugetlb.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
openEuler
Ubuntu
python3-perf-debuginfo
python3-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-tools
kernel-source
kernel-headers
kernel-devel
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
bpftool
kernel
linux (Ubuntu package)
linux-aws-6.14 (Ubuntu package)
linux-oem-6.14 (Ubuntu package)
linux-azure (Ubuntu package)
linux-realtime-6.14 (Ubuntu package)
linux-oracle-6.14 (Ubuntu package)
linux-raspi (Ubuntu package)

How to mitigate CVE-2025-38050

Install update from vendor's repository.

python3-perf-debuginfo - addressed in versions 6.6.0-100.0.0.92, 6.6.0-100.0.0.103
python3-perf - addressed in versions 6.6.0-100.0.0.92, 6.6.0-100.0.0.103
perf-debuginfo - addressed in versions 6.6.0-100.0.0.92, 6.6.0-100.0.0.103
perf - addressed in versions 6.6.0-100.0.0.92, 6.6.0-100.0.0.103
kernel-tools-devel - addressed in versions 6.6.0-100.0.0.92, 6.6.0-100.0.0.103
kernel-tools-debuginfo - addressed in versions 6.6.0-100.0.0.92, 6.6.0-100.0.0.103
kernel-tools - addressed in versions 6.6.0-100.0.0.92, 6.6.0-100.0.0.103
kernel-source - addressed in versions 6.6.0-100.0.0.92, 6.6.0-100.0.0.103
kernel-headers - addressed in versions 6.6.0-100.0.0.92, 6.6.0-100.0.0.103
kernel-devel - addressed in versions 6.6.0-100.0.0.92, 6.6.0-100.0.0.103
kernel-debugsource - addressed in versions 6.6.0-100.0.0.92, 6.6.0-100.0.0.103
kernel-debuginfo - addressed in versions 6.6.0-100.0.0.92, 6.6.0-100.0.0.103
bpftool-debuginfo - addressed in versions 6.6.0-100.0.0.92, 6.6.0-100.0.0.103
bpftool - addressed in versions 6.6.0-100.0.0.92, 6.6.0-100.0.0.103
kernel - addressed in versions 6.6.0-100.0.0.92, 6.6.0-100.0.0.103
linux (Ubuntu package) - addressed in versions 6.14.0-32.32, 6.14.0-32.32.1, 6.14.0-32.32.1~24.04.1, 6.14.0-1012.12~24.04.1, 6.14.0-1013.13, 6.14.0-1016.17, 6.14.0-1016.17~24.04.1
linux-aws-6.14 (Ubuntu package) - addressed in versions 6.14.0-32.32~24.04.1, 6.14.0-1013.13~24.04.1
linux-oem-6.14 (Ubuntu package) - update to 6.14.0-1012.12
linux-azure (Ubuntu package) - update to 6.14.0-1012.12
linux-realtime-6.14 (Ubuntu package) - update to 6.14.0-1012.12~24.04.1
linux-oracle-6.14 (Ubuntu package) - update to 6.14.0-1013.13~24.04.1
linux-raspi (Ubuntu package) - update to 6.14.0-1014.14

External References

Related Security Bulletins