Input validation error in Linux kernel - CVE-2025-22043

Vulnerability identifier: #VU107809

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-2025-22043

CWE-ID: CWE-20

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 improper input validation within the parse_durable_handle_context() function in fs/smb/server/smb2pdu.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
openEuler
Ubuntu
python3-perf-debuginfo
kernel
bpftool
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-devel
kernel-headers
kernel-source
kernel-tools
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python3-perf
kernel-extra-modules
linux (Ubuntu package)
linux-lowlatency (Ubuntu package)
linux-azure (Ubuntu package)
linux-oem-6.11 (Ubuntu package)
linux-aws (Ubuntu package)

Install update from vendor's website.

Linux kernel - update to 6.14.2
python3-perf-debuginfo - addressed in versions 6.6.0-127.0.0.113, 6.6.0-127.0.0.125, 6.6.0-127.0.0.126
kernel - addressed in versions 6.6.0-127.0.0.113, 6.6.0-127.0.0.125, 6.6.0-127.0.0.126
bpftool - addressed in versions 6.6.0-127.0.0.113, 6.6.0-127.0.0.125, 6.6.0-127.0.0.126
bpftool-debuginfo - addressed in versions 6.6.0-127.0.0.113, 6.6.0-127.0.0.125, 6.6.0-127.0.0.126
kernel-debuginfo - addressed in versions 6.6.0-127.0.0.113, 6.6.0-127.0.0.125, 6.6.0-127.0.0.126
kernel-debugsource - addressed in versions 6.6.0-127.0.0.113, 6.6.0-127.0.0.125, 6.6.0-127.0.0.126
kernel-devel - addressed in versions 6.6.0-127.0.0.113, 6.6.0-127.0.0.125, 6.6.0-127.0.0.126
kernel-headers - addressed in versions 6.6.0-127.0.0.113, 6.6.0-127.0.0.125, 6.6.0-127.0.0.126
kernel-source - addressed in versions 6.6.0-127.0.0.113, 6.6.0-127.0.0.125, 6.6.0-127.0.0.126
kernel-tools - addressed in versions 6.6.0-127.0.0.113, 6.6.0-127.0.0.125, 6.6.0-127.0.0.126
kernel-tools-debuginfo - addressed in versions 6.6.0-127.0.0.113, 6.6.0-127.0.0.125, 6.6.0-127.0.0.126
kernel-tools-devel - addressed in versions 6.6.0-127.0.0.113, 6.6.0-127.0.0.125, 6.6.0-127.0.0.126
perf - addressed in versions 6.6.0-127.0.0.113, 6.6.0-127.0.0.125, 6.6.0-127.0.0.126
perf-debuginfo - addressed in versions 6.6.0-127.0.0.113, 6.6.0-127.0.0.125, 6.6.0-127.0.0.126
python3-perf - addressed in versions 6.6.0-127.0.0.113, 6.6.0-127.0.0.125, 6.6.0-127.0.0.126
kernel-extra-modules - update to 6.6.0-127.0.0.126
linux (Ubuntu package) - addressed in versions 6.11.0-28.28, 6.11.0-28.28~24.04.1, 6.11.0-1011.11, 6.11.0-1014.14, 6.11.0-1015.16, 6.11.0-1016.16, 6.11.0-1016.16~24.04.1, 6.11.0-1017.18, 6.14.0-22.22, 6.14.0-1004.4, 6.14.0-1007.7, 6.14.0-1008.8
linux-lowlatency (Ubuntu package) - addressed in versions 6.11.0-1015.16, 6.11.0-1015.16~24.04.2
linux-azure (Ubuntu package) - addressed in versions 6.11.0-1018.18, 6.11.0-1018.18~24.04.1, 6.14.0-1007.7
linux-oem-6.11 (Ubuntu package) - update to 6.11.0-1024.24
linux-aws (Ubuntu package) - addressed in versions 6.14.0-1007.7, 6.14.0-1007.7+1

• https://git.kernel.org/stable/c/1107b9ed92194603593c51829a3887812ae9e806
• https://git.kernel.org/stable/c/29b946714d6aa77de54c71243bba39469ac43ef2
• https://git.kernel.org/stable/c/542027e123fc0bfd61dd59e21ae0ee4ef2101b29
• https://git.kernel.org/stable/c/8d4848c45943c9cf5e86142fd7347efa97f497db
• https://git.kernel.org/stable/c/f0db3d9d416e332a0d6f045a1509539d3a4cd898
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14.2

• Input validation error in Linux kernel smb server
• Ubuntu update for linux
• Ubuntu update for linux-azure
• Ubuntu update for linux
• Ubuntu update for linux-oem-6.11
• Ubuntu update for linux-lowlatency
• Ubuntu update for linux-azure
• Ubuntu update for linux-aws
• openEuler 24.03 LTS SP2 update for kernel
• openEuler 24.03 LTS SP1 update for kernel
• openEuler 24.03 LTS update for kernel