Memory leak in Linux kernel - CVE-2025-37807

Vulnerability identifier: #VU108788

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-2025-37807

CWE-ID: CWE-401

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to memory leak within the htab_is_percpu() and htab_percpu_map_gen_lookup() functions in kernel/bpf/hashtab.c. A local user can perform a denial of service (DoS) attack.

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

Install update from vendor's website.

Linux kernel - update to 6.12.26
python3-perf-debuginfo - addressed in versions 5.10.0-296.0.0.198, 5.10.0-296.0.0.199, 6.6.0-92.0.0.86, 6.6.0-92.0.0.97
kernel - addressed in versions 5.10.0-296.0.0.198, 5.10.0-296.0.0.199, 6.6.0-92.0.0.86, 6.6.0-92.0.0.97
kernel-debuginfo - addressed in versions 5.10.0-296.0.0.198, 5.10.0-296.0.0.199, 6.6.0-92.0.0.86, 6.6.0-92.0.0.97
kernel-debugsource - addressed in versions 5.10.0-296.0.0.198, 5.10.0-296.0.0.199, 6.6.0-92.0.0.86, 6.6.0-92.0.0.97
kernel-devel - addressed in versions 5.10.0-296.0.0.198, 5.10.0-296.0.0.199, 6.6.0-92.0.0.86, 6.6.0-92.0.0.97
kernel-headers - addressed in versions 5.10.0-296.0.0.198, 5.10.0-296.0.0.199, 6.6.0-92.0.0.86, 6.6.0-92.0.0.97
kernel-source - addressed in versions 5.10.0-296.0.0.198, 5.10.0-296.0.0.199, 6.6.0-92.0.0.86, 6.6.0-92.0.0.97
kernel-tools-debuginfo - addressed in versions 5.10.0-296.0.0.198, 5.10.0-296.0.0.199, 6.6.0-92.0.0.86, 6.6.0-92.0.0.97
kernel-tools-devel - addressed in versions 5.10.0-296.0.0.198, 5.10.0-296.0.0.199, 6.6.0-92.0.0.86, 6.6.0-92.0.0.97
perf - addressed in versions 5.10.0-296.0.0.198, 5.10.0-296.0.0.199, 6.6.0-92.0.0.86, 6.6.0-92.0.0.97
perf-debuginfo - addressed in versions 5.10.0-296.0.0.198, 5.10.0-296.0.0.199, 6.6.0-92.0.0.86, 6.6.0-92.0.0.97
python3-perf - addressed in versions 5.10.0-296.0.0.198, 5.10.0-296.0.0.199, 6.6.0-92.0.0.86, 6.6.0-92.0.0.97
kernel-tools - addressed in versions 5.10.0-296.0.0.198, 5.10.0-296.0.0.199, 6.6.0-92.0.0.86, 6.6.0-92.0.0.97
bpftool - addressed in versions 5.10.0-296.0.0.199, 6.6.0-92.0.0.86, 6.6.0-92.0.0.97
bpftool-debuginfo - addressed in versions 5.10.0-296.0.0.199, 6.6.0-92.0.0.86, 6.6.0-92.0.0.97
linux (Ubuntu package) - addressed in versions 6.14.0-22.22, 6.14.0-1004.4, 6.14.0-1007.7, 6.14.0-1008.8
linux-azure (Ubuntu package) - update to 6.14.0-1007.7
linux-aws (Ubuntu package) - addressed in versions 6.14.0-1007.7, 6.14.0-1007.7+1

• https://git.kernel.org/stable/c/11ba7ce076e5903e7bdc1fd1498979c331b3c286
• https://git.kernel.org/stable/c/1f1c29aa1934177349c17e3c32e68ec38a7a56df
• https://git.kernel.org/stable/c/7758e308aeda1038aba1944f7302d34161b3effe
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.26

• Memory leak in Linux kernel bpf
• openEuler 24.03 LTS SP1 update for kernel
• openEuler 24.03 LTS update for kernel
• Ubuntu update for linux
• Ubuntu update for linux-azure
• Ubuntu update for linux-aws
• openEuler 22.03 LTS SP4 update for kernel
• openEuler 22.03 LTS SP3 update for kernel