Double free in Linux kernel - CVE-2025-68745

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Main Vulnerability Database Vulnerabilities #VU120531

Double free in Linux kernel - CVE-2025-68745

Published: December 26, 2025


Vulnerability identifier: #VU120531
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-2025-68745
CWE-ID: CWE-415
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 a double free error within the drivers/scsi/qla2xxx/qla_target.h. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux Server - AUS
Anolis OS
openEuler
Ubuntu
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel
kernel-source
bpftool
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-devel
kernel-headers
kernel-tools
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python3-perf
python3-perf-debuginfo
kernel-extra-modules
kernel-tools-libs-devel
kernel-tools-libs
kernel-debug-devel
kernel-debug
linux-nvidia-tegra (Ubuntu package)
linux-aws (Ubuntu package)
linux (Ubuntu package)
linux-realtime-6.17 (Ubuntu package)
linux-gcp (Ubuntu package)
linux-azure (Ubuntu package)
linux-raspi (Ubuntu package)

How to mitigate CVE-2025-68745

Install update from vendor's repository.

kernel (Red Hat package) - addressed in versions 4.18.0-372.223.1.el8_6, 4.18.0-553.162.1.el8_10, 6.12.0-211.55.1.el10_2
kernel-rt (Red Hat package) - update to 4.18.0-553.162.1.rt7.503.el8_10
kernel - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-source - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
bpftool - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
bpftool-debuginfo - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-debuginfo - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-debugsource - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-devel - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-headers - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-tools - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-tools-debuginfo - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-tools-devel - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
perf - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
perf-debuginfo - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
python3-perf - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
python3-perf-debuginfo - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-extra-modules - update to 6.6.0-144.0.0.140
bpftool - update to 6.6.102-6
python3-perf - update to 6.6.102-6
perf - update to 6.6.102-6
kernel-tools-libs-devel - update to 6.6.102-6
kernel-tools-libs - update to 6.6.102-6
kernel-tools - update to 6.6.102-6
kernel-headers - update to 6.6.102-6
kernel-devel - update to 6.6.102-6
kernel-debug-devel - update to 6.6.102-6
kernel-debug - update to 6.6.102-6
kernel - update to 6.6.102-6
linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1035.38
linux-aws (Ubuntu package) - addressed in versions 6.17.0-22.22~24.04.1, 6.17.0-1011.11~24.04.1, 6.17.0-1011.11, 6.17.0-1012.12~24.04.1, 6.17.0-1012.12
linux (Ubuntu package) - addressed in versions 6.17.0-22.22, 6.17.0-1010.11
linux-realtime-6.17 (Ubuntu package) - update to 6.17.0-1010.11~24.04.1
linux-gcp (Ubuntu package) - addressed in versions 6.17.0-1012.12~24.04.1, 6.17.0-1012.12
linux-azure (Ubuntu package) - addressed in versions 6.17.0-1013.13~24.04.1, 6.17.0-1013.13, 6.17.0-1020.20
linux-raspi (Ubuntu package) - update to 6.17.0-1014.14

External References

Related Security Bulletins