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Unscored CVE-2025-68324 EUVD-2025-204268GHSA-v78j-7qmc-c42v

scsi: imm: Fix use-after-free bug caused by unfinished delayed work

Published Dec 18, 2025 · Updated Oct 30, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: kernel Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.14 Package: linux-aws-6.17 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-6.8 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.11 Package: linux-azure-6.14 Package: linux-azure-6.17 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-6.8 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.15 Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.14 Package: linux-azure-fde-6.17 Package: linux-azure-fde-6.2 Package: linux-azure-fde-6.8 Package: linux-azure-fips Package: linux-azure-nvidia Package: linux-azure-nvidia-6.14 Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.11 Package: linux-gcp-6.14 Package: linux-gcp-6.17 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-6.8 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.11 Package: linux-hwe-6.14 Package: linux-hwe-6.17 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-6.8 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-5.4 Package: linux-ibm-6.8 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.11 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lowlatency-hwe-6.8 Package: linux-lts-xenial Package: linux-nvidia Package: linux-nvidia-6.11 Package: linux-nvidia-6.17 Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-6.8 Package: linux-nvidia-lowlatency Package: linux-nvidia-tegra Package: linux-nvidia-tegra-5.15 Package: linux-nvidia-tegra-igx Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.11 Package: linux-oem-6.14 Package: linux-oem-6.17 Package: linux-oem-6.5 Package: linux-oem-6.8 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.14 Package: linux-oracle-6.17 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-realtime-6.14 Package: linux-realtime-6.17 Package: linux-realtime-6.8 Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.14 Package: linux-riscv-6.17 Package: linux-riscv-6.5 Package: linux-riscv-6.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Azure Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

scsi: imm: Fix use-after-free bug caused by unfinished delayed work

The delayed work item 'imm_tq' is initialized in imm_attach() and
scheduled via imm_queuecommand() for processing SCSI commands. When the
IMM parallel port SCSI host adapter is detached through imm_detach(),
the imm_struct device instance is deallocated.

However, the delayed work might still be pending or executing
when imm_detach() is called, leading to use-after-free bugs
when the work function imm_interrupt() accesses the already
freed imm_struct memory.

The race condition can occur as follows:

CPU 0(detach thread) | CPU 1
| imm_queuecommand()
| imm_queuecommand_lck()
imm_detach() | schedule_delayed_work()
kfree(dev) //FREE | imm_interrupt()
| dev = container_of(...) //USE
dev-> //USE

Add disable_delayed_work_sync() in imm_detach() to guarantee proper
cancellation of the delayed work item before imm_struct is deallocated.

Affected products

VendorProductAffectedFixed
Linux Linux 2.6.12 6.1.191

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 linux 6.17.13-1 —
Debian 13 linux 6.12.63-1 —
Debian 12 linux No fix yet —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 24.04 LTS linux-bluefield No fix yet —
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield No fix yet —
Ubuntu 25.10 linux 6.17.0-19.19 USN-8094-1
Ubuntu 25.10 linux-aws +2 6.17.0-1009.9 USN-8094-1
Ubuntu 25.10 linux-azure +1 6.17.0-1010.10 USN-8094-5, USN-8094-4
Ubuntu 25.10 linux-azure-fde No fix yet —
Ubuntu 25.10 linux-realtime 6.17.0-1008.9 USN-8094-2
Ubuntu 25.10 linux-riscv 6.17.0-19.19.1 —
Ubuntu 24.04 LTS linux +36 No fix yet —
Ubuntu 24.04 LTS linux-aws-6.17 6.17.0-1009.9~24.04.2 USN-8094-1
Ubuntu 24.04 LTS linux-azure-6.17 6.17.0-1010.10~24.04.1 USN-8094-4
Ubuntu 24.04 LTS linux-gcp-6.17 6.17.0-1009.9~24.04.3 USN-8094-2
Ubuntu 24.04 LTS linux-hwe-6.17 6.17.0-19.19~24.04.2 USN-8094-1
Ubuntu 24.04 LTS linux-nvidia-6.17 6.17.0-1018.18 —
Ubuntu 24.04 LTS linux-oem-6.17 6.17.0-1017.17 USN-8152-1
Ubuntu 24.04 LTS linux-oracle-6.17 6.17.0-1009.9~24.04.1 USN-8094-1
Ubuntu 24.04 LTS linux-riscv-6.17 6.17.0-19.19.1~24.04.1 —
Ubuntu 22.04 LTS linux +59 No fix yet —
Show 18 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-realtime +2 No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-realtime-6.17 6.17.0-1008.9~24.04.1 USN-8094-3
Ubuntu Pro Realtime 22.04 LTS linux-realtime +2 No fix yet —
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-updates 24.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 22.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-preview 22.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro 20.04 LTS linux +21 No fix yet —
Ubuntu Pro 18.04 LTS linux +12 No fix yet —
Ubuntu Pro 16.04 LTS linux +7 No fix yet —
Ubuntu Pro 14.04 LTS linux +3 No fix yet —

SUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
SLES 15 SP7 kernel-64kb +6 6.4.0-150700.53.60.1 SUSE-SU-2026:2482-1
SLES 15 SP7 kernel-default-base 6.4.0-150700.53.60.1.150700.17.35.4 SUSE-SU-2026:2482-1
SLES 15 SP7 kernel-obs-build 6.4.0-150700.53.60.2 SUSE-SU-2026:2482-1
SLES 15 SP6 kernel-64kb +6 6.4.0-150600.23.118.1 SUSE-SU-2026:2632-1
SLES 15 SP6 kernel-default-base 6.4.0-150600.23.118.1.150600.12.56.1 SUSE-SU-2026:2632-1
SLES 15 SP5 kernel-64kb +4 5.14.21-150500.55.172.2 SUSE-SU-2026:2658-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.172.2.150500.6.81.2 SUSE-SU-2026:2658-1
SLES 15 SP5 kernel-docs +1 5.14.21-150500.55.172.1 SUSE-SU-2026:2658-1
SLES 15 SP4 kernel-64kb +4 5.14.21-150400.24.225.2 SUSE-SU-2026:2638-1
SLES 15 SP4 kernel-default-base 5.14.21-150400.24.225.2.150400.24.114.2 SUSE-SU-2026:2638-1
SLES 15 SP4 kernel-docs +1 5.14.21-150400.24.225.1 SUSE-SU-2026:2638-1
SLES 12 SP5 kernel-syms +2 4.12.14-122.317.1 SUSE-SU-2026:2450-1
Show 17 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES 11 SP4 kernel-ec2 +6 3.0.101-108.213.1 SUSE-SU-2026:2839-1
SLES for SAP 15 SP6 kernel-default-base 6.4.0-150600.23.118.1.150600.12.56.1 SUSE-SU-2026:2632-1
SLES for SAP 15 SP6 kernel-docs +4 6.4.0-150600.23.118.1 SUSE-SU-2026:2632-1
SLES for SAP 15 SP5 kernel-default-base 5.14.21-150500.55.172.2.150500.6.81.2 SUSE-SU-2026:2658-1
SLES for SAP 15 SP5 kernel-docs +1 5.14.21-150500.55.172.1 SUSE-SU-2026:2658-1
SLES for SAP 15 SP5 kernel-source +2 5.14.21-150500.55.172.2 SUSE-SU-2026:2658-1
SLES for SAP 15 SP4 kernel-default-base 5.14.21-150400.24.225.2.150400.24.114.2 SUSE-SU-2026:2638-1
SLES for SAP 15 SP4 kernel-docs +1 5.14.21-150400.24.225.1 SUSE-SU-2026:2638-1
SLES for SAP 15 SP4 kernel-source +2 5.14.21-150400.24.225.2 SUSE-SU-2026:2638-1
SLE Micro 6.1 kernel-default-base 6.4.0-47.1.21.24 SUSE-SU-2026:22137-1
SLE Micro 6.1 kernel-rt +1 6.4.0-48.1 SUSE-SU-2026:22458-1
SLE Micro 6.1 kernel-source +2 6.4.0-47.1 SUSE-SU-2026:22137-1
SLE Micro 6.0 kernel-default-base 6.4.0-47.1.21.24 SUSE-SU-2026:22108-1
SLE Micro 6.0 kernel-rt +1 6.4.0-48.1 SUSE-SU-2026:22433-1
SLE Micro 6.0 kernel-source +2 6.4.0-47.1 SUSE-SU-2026:22108-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.172.2.150500.6.81.2 SUSE-SU-2026:2658-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.146.1 SUSE-SU-2026:2630-1
SLE Micro 5.5 kernel-source +1 5.14.21-150500.55.172.2 SUSE-SU-2026:2658-1
SLE Micro 5.4 kernel-default-base 5.14.21-150400.24.225.2.150400.24.114.2 SUSE-SU-2026:2638-1
SLE Micro 5.4 kernel-rt +1 5.14.21-150400.15.173.1 SUSE-SU-2026:2631-1
SLE Micro 5.4 kernel-source +1 5.14.21-150400.24.225.2 SUSE-SU-2026:2638-1
SLE Micro 5.3 kernel-default-base 5.14.21-150400.24.225.2.150400.24.114.2 SUSE-SU-2026:2638-1
SLE Micro 5.3 kernel-rt +1 5.14.21-150400.15.173.1 SUSE-SU-2026:2631-1
SLE Micro 5.3 kernel-source +1 5.14.21-150400.24.225.2 SUSE-SU-2026:2638-1
SLE Live Patching 15 SP7 kernel-default 6.4.0-150700.53.60.1 SUSE-SU-2026:2482-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7-RT_Update_16 1-150700.1.5.2 SUSE-SU-2026:2591-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_16 1-150700.15.3.2 SUSE-SU-2026:2482-1
SLE Live Patching 15 SP6 kernel-default 6.4.0-150600.23.118.1 SUSE-SU-2026:2632-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_28 1-150600.13.3.1 SUSE-SU-2026:2632-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.172.2 SUSE-SU-2026:2658-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_42 1-150500.11.3.2 SUSE-SU-2026:2658-1
SLE Live Patching 15 SP4 kernel-default 5.14.21-150400.24.225.2 SUSE-SU-2026:2638-1
SLE Live Patching 15 SP4 kernel-livepatch-SLE15-SP4_Update_56 1-150400.9.3.2 SUSE-SU-2026:2638-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.317.1 SUSE-SU-2026:2450-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_84 1-8.7.1 SUSE-SU-2026:2450-1
SLE HPC 15 SP5 kernel-64kb +3 5.14.21-150500.55.172.2 SUSE-SU-2026:2658-1
SLE HPC 15 SP5 kernel-default-base 5.14.21-150500.55.172.2.150500.6.81.2 SUSE-SU-2026:2658-1
SLE HPC 15 SP5 kernel-docs +1 5.14.21-150500.55.172.1 SUSE-SU-2026:2658-1
SLE HPC 15 SP4 kernel-64kb +3 5.14.21-150400.24.225.2 SUSE-SU-2026:2638-1
SLE HPC 15 SP4 kernel-default-base 5.14.21-150400.24.225.2.150400.24.114.2 SUSE-SU-2026:2638-1
SLE HPC 15 SP4 kernel-docs +1 5.14.21-150400.24.225.1 SUSE-SU-2026:2638-1
SUSE Real Time Module 15 SP7 kernel-rt +1 6.4.0-150700.7.59.2 SUSE-SU-2026:2591-1
SUSE Real Time Module 15 SP7 kernel-syms-rt 6.4.0-150700.7.59.1 SUSE-SU-2026:2591-1

openSUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed kernel-source 6.18.2-1.1 openSUSE-SU-2025:15836-1
openSUSE Tumbleweed kernel-source-longterm 6.18.16-1.1 openSUSE-SU-2026:10301-1

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 kernel No fix yet —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 kernel-uek +34 6.12.0-108.64.6.3.el10uek ELSA-2026-50112

Advisories 23

References