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Vulnerability · Published Dec 24, 2025 · Assigned by Linux

CVE-2025-68374md: fix rcu protection in md_wakeup_thread

Unrated

In plain English

A 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 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 88.1% 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: md: fix rcu protection in md_wakeup_thread We attempted to use RCU to protect the pointer 'thread', but directly passed the value when calling md_wakeup_thread(). This means that the RCU pointer has been acquired before rcu_read_lock(), which renders rcu_read_lock() ineffective and could lead to a use-after-free.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13linux6.12.63-1DEBIAN-CVE-2025-68374
Debian:14linux6.17.13-1DEBIAN-CVE-2025-68374
Ubuntu:24.04:LTSlinux6.8.0-110.110USN-8179-1
Ubuntu:24.04:LTSlinux6.8.0-110.110UBUNTU-CVE-2025-68374
Ubuntu:25.10linux6.17.0-19.19UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-aws6.8.0-1052.55USN-8179-1
Ubuntu:24.04:LTSlinux-aws6.8.0-1052.55UBUNTU-CVE-2025-68374
Ubuntu:25.10linux-aws6.17.0-1009.9UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-aws-6.176.17.0-1009.9~24.04.2UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1052.55~22.04.1USN-8179-1
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1052.55~22.04.1UBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-azure6.8.0-1054.60UBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-azure6.8.0-1054.60USN-8258-1
Ubuntu:25.10linux-azure6.17.0-1010.10UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-azure-6.176.17.0-1010.10~24.04.1UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1059.65~22.04.1UBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1058.65UBUNTU-CVE-2025-68374
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1058.65~22.04.1UBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-gcp6.8.0-1054.57UBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-gcp6.8.0-1054.57USN-8179-1
Ubuntu:25.10linux-gcp6.17.0-1009.9UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-gcp-6.176.17.0-1009.9~24.04.3UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1054.57~22.04.1UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1054.57~22.04.1USN-8179-4
Ubuntu:24.04:LTSlinux-gke6.8.0-1050.56USN-8179-1
Ubuntu:24.04:LTSlinux-gke6.8.0-1050.56UBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1037.40UBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1037.40USN-8179-1
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-hwe-6.176.17.0-19.19~24.04.2UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-110.110~22.04.1USN-8179-3
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-110.110~22.04.1UBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-ibm6.8.0-1051.51USN-8179-1
Ubuntu:24.04:LTSlinux-ibm6.8.0-1051.51UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1051.51~22.04.1UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1051.51~22.04.1USN-8179-3
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-110.110.1UBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-110.110.1USN-8179-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-110.110.1~22.04.1UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-110.110.1~22.04.1USN-8179-1
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1051.54UBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1051.54USN-8185-1
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-nvidia-6.176.17.0-1018.18UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1051.54~22.04.1USN-8185-1
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1051.54~22.04.1UBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1051.54.1USN-8185-2
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1051.54.1UBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1022.22USN-8265-1
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1022.22UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-oem-6.176.17.0-1017.17UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-oracle6.8.0-1049.50USN-8203-1
Ubuntu:24.04:LTSlinux-oracle6.8.0-1049.50UBUNTU-CVE-2025-68374
Ubuntu:25.10linux-oracle6.17.0-1009.9UBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-oracle-6.176.17.0-1009.9~24.04.1UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1049.50~22.04.1USN-8203-1
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1049.50~22.04.1UBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-raspi6.8.0-1052.56USN-8179-3
Ubuntu:24.04:LTSlinux-raspi6.8.0-1052.56UBUNTU-CVE-2025-68374
Ubuntu:25.10linux-raspi6.17.0-1010.10UBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-68374
Ubuntu:25.10linux-realtime6.17.0-1008.9UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-68374
Ubuntu:25.10linux-riscv6.17.0-19.19.1UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-riscv-6.176.17.0-19.19.1~24.04.1UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-110.110~22.04.1UBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-68374
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-68374
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1028.29UBUNTU-CVE-2025-68374

Affected products (as reported)

VendorProductVersions
Linux Linux 4469315439827290923fce4f3f672599cabeb366 – before dc6d1249ee35c1c76700b4b96281daeb7637bce14469315439827290923fce4f3f672599cabeb366 – before 21989cb5034c835b212385a2afadf279d8069da04469315439827290923fce4f3f672599cabeb366 – before a4bd1caf591faeae44cb10b6517e7dacb5139bda4469315439827290923fce4f3f672599cabeb366 – before f98b191f78124405294481dea85f8a22a3eb0a594469315439827290923fce4f3f672599cabeb366 – before 0dc76205549b4c25705e54345f211b9f66e018a0
Linux Linux 6.5

References