Use of uninitialized resource in Linux kernel - CVE-2025-68291

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU120113

Use of uninitialized resource in Linux kernel - CVE-2025-68291

Published: December 16, 2025


Vulnerability identifier: #VU120113
CSH Severity: Low
CVSS v4 BT: 4.3 [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/E:U/U:Clear]
CVE-ID: CVE-2025-68291
CWE-ID: CWE-908
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 use of uninitialized resource within the mptcp_do_fastclose() function in net/mptcp/protocol.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
Debian Linux
Ubuntu
openEuler
linux (Debian package)
kernel-headers
kernel-devel
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
bpftool
kernel
kernel-source
kernel-tools
kernel-tools-debuginfo
perf
python3-perf-debuginfo
python3-perf
kernel-tools-devel
perf-debuginfo
kernel-extra-modules
linux (Ubuntu package)
linux-aws-fips (Ubuntu package)
linux-hwe-6.8 (Ubuntu package)
linux-nvidia-tegra (Ubuntu package)
linux-oracle (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-nvidia-lowlatency (Ubuntu package)
linux-gcp-6.8 (Ubuntu package)
linux-azure (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-raspi-realtime (Ubuntu package)
linux-realtime (Ubuntu package)

How to mitigate CVE-2025-68291

Install update from vendor's repository.

linux (Debian package) - update to 6.1.162-1
kernel-headers - addressed in versions 6.6.0-145.0.3.131, 6.6.0-145.0.3.134, 6.6.0-145.0.3.143, 6.6.0-145.0.3.144
kernel-devel - addressed in versions 6.6.0-145.0.3.131, 6.6.0-145.0.3.134, 6.6.0-145.0.3.143, 6.6.0-145.0.3.144
kernel-debugsource - addressed in versions 6.6.0-145.0.3.131, 6.6.0-145.0.3.134, 6.6.0-145.0.3.143, 6.6.0-145.0.3.144
kernel-debuginfo - addressed in versions 6.6.0-145.0.3.131, 6.6.0-145.0.3.134, 6.6.0-145.0.3.143, 6.6.0-145.0.3.144
bpftool-debuginfo - addressed in versions 6.6.0-145.0.3.131, 6.6.0-145.0.3.134, 6.6.0-145.0.3.143, 6.6.0-145.0.3.144
bpftool - addressed in versions 6.6.0-145.0.3.131, 6.6.0-145.0.3.134, 6.6.0-145.0.3.143, 6.6.0-145.0.3.144
kernel - addressed in versions 6.6.0-145.0.3.131, 6.6.0-145.0.3.134, 6.6.0-145.0.3.143, 6.6.0-145.0.3.144
kernel-source - addressed in versions 6.6.0-145.0.3.131, 6.6.0-145.0.3.134, 6.6.0-145.0.3.143, 6.6.0-145.0.3.144
kernel-tools - addressed in versions 6.6.0-145.0.3.131, 6.6.0-145.0.3.134, 6.6.0-145.0.3.143, 6.6.0-145.0.3.144
kernel-tools-debuginfo - addressed in versions 6.6.0-145.0.3.131, 6.6.0-145.0.3.134, 6.6.0-145.0.3.143, 6.6.0-145.0.3.144
perf - addressed in versions 6.6.0-145.0.3.131, 6.6.0-145.0.3.134, 6.6.0-145.0.3.143, 6.6.0-145.0.3.144
python3-perf-debuginfo - addressed in versions 6.6.0-145.0.3.131, 6.6.0-145.0.3.134, 6.6.0-145.0.3.143, 6.6.0-145.0.3.144
python3-perf - addressed in versions 6.6.0-145.0.3.131, 6.6.0-145.0.3.134, 6.6.0-145.0.3.143, 6.6.0-145.0.3.144
kernel-tools-devel - addressed in versions 6.6.0-145.0.3.131, 6.6.0-145.0.3.134, 6.6.0-145.0.3.143, 6.6.0-145.0.3.144
perf-debuginfo - addressed in versions 6.6.0-145.0.3.131, 6.6.0-145.0.3.134, 6.6.0-145.0.3.143, 6.6.0-145.0.3.144
kernel-extra-modules - addressed in versions 6.6.0-145.0.3.134, 6.6.0-145.0.3.144
linux (Ubuntu package) - addressed in versions 6.8.0-110.110, 6.8.0-110.110.1, 6.8.0-110.110.1~22.04.1, 6.8.0-1037.40, 6.8.0-1050.56, 6.8.0-1051.51, 6.8.0-1052.55~22.04.1, 6.8.0-1054.57
linux-aws-fips (Ubuntu package) - addressed in versions 6.8.0-110.110+fips2, 6.8.0-1052.55+fips1, 6.8.0-1054.57+fips1
linux-hwe-6.8 (Ubuntu package) - addressed in versions 6.8.0-110.110~22.04.1, 6.8.0-1051.51~22.04.1, 6.8.0-1052.56
linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1022.22
linux-oracle (Ubuntu package) - addressed in versions 6.8.0-1049.50, 6.8.0-1049.50~22.04.1
linux-nvidia (Ubuntu package) - addressed in versions 6.8.0-1051.54, 6.8.0-1051.54~22.04.1
linux-nvidia-lowlatency (Ubuntu package) - update to 6.8.0-1051.54.1
linux-gcp-6.8 (Ubuntu package) - update to 6.8.0-1054.57~22.04.1
linux-azure (Ubuntu package) - update to 6.8.0-1054.60
linux-azure-fips (Ubuntu package) - update to 6.8.0-1054.60+fips1
linux-raspi-realtime (Ubuntu package) - update to 6.8.0-2042.43
linux-realtime (Ubuntu package) - update to 6.8.1-1047.48

External References

Related Security Bulletins