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Vulnerability · Published Jan 13, 2026 · Assigned by Linux

CVE-2025-71073Input: lkkbd - disable pending work before freeing device

High 7.8

In plain English

A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.2%top 92.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: Input: lkkbd - disable pending work before freeing device lkkbd_interrupt() schedules lk->tq via schedule_work(), and the work handler lkkbd_reinit() dereferences the lkkbd structure and its serio/input_dev fields. lkkbd_disconnect() and error paths in lkkbd_connect() free the lkkbd structure without preventing the reinit work from being queued again until serio_close() returns. This can allow the work handler to run after the structure has been freed, leading to a potential use-after-free. Use disable_work_sync() instead of cancel_work_sync() to ensure the reinit work cannot be re-queued, and call it both in lkkbd_disconnect() and in lkkbd_connect() error paths after serio_open().

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2025-71073
Debian:13linux6.12.69-1DEBIAN-CVE-2025-71073
Debian:14linux6.18.3-1DEBIAN-CVE-2025-71073
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2025-71073
Ubuntu:25.10linux6.17.0-22.22UBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2025-71073
Ubuntu:25.10linux-aws6.17.0-1012.12UBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-aws-6.176.17.0-1012.12~24.04.1UBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2025-71073
Ubuntu:25.10linux-azure6.17.0-1013.13UBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-azure-6.176.17.0-1013.13~24.04.1UBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2025-71073
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2025-71073
Ubuntu:25.10linux-gcp6.17.0-1012.12UBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-gcp-6.176.17.0-1012.12~24.04.1UBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-hwe-6.176.17.0-22.22~24.04.1UBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-nvidia-6.176.17.0-1018.18UBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1035.38UBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-oem-6.176.17.0-1020.20UBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2025-71073
Ubuntu:25.10linux-oracle6.17.0-1011.11UBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-oracle-6.176.17.0-1011.11~24.04.1UBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2025-71073
Ubuntu:25.10linux-raspi6.17.0-1013.13UBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-71073
Ubuntu:25.10linux-realtime6.17.0-1010.11UBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-71073
Ubuntu:25.10linux-riscv6.17.0-22.22.1UBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-riscv-6.176.17.0-22.22.1~24.04.1UBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2025-71073
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2025-71073
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2025-71073

Affected products (as reported)

VendorProductVersions
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before fb76f871d6155c52ccc0401bbde77dd20b83d0c11da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 8cf889d45bbc8477206dda78c8f757ea8ff682131da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 3a7cd1397c209076c371d53bf39a55c138f623421da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before cffc4e29b1e2d44ab094cf142d7c461ff09b91041da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before e58c88f0cb2d8ed89de78f6f17409d29cfab6c5c
Linux Linux 2.6.12

References