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Vulnerability · Published Aug 15, 2026 · Assigned by Linux

CVE-2026-72037net: lan743x: Initialize eth_syslock spinlock before use

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: net: lan743x: Initialize eth_syslock spinlock before use lan743x_hardware_init() calls pci11x1x_strap_get_status() during the PCI11x1x probe sequence. That helper acquires the Ethernet subsystem hardware lock via lan743x_hs_syslock_acquire(), which relies on adapter->eth_syslock_spinlock to serialize access. The spinlock is currently initialized only after the strap status is read. With CONFIG_DEBUG_SPINLOCK enabled, taking the zeroed initialized spinlock can trip the spinlock debug check. Fix by initializing adapter->eth_syslock_spinlock before reading the strap status so the probe path never attempts to lock an uninitialized spinlock.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.180-1DEBIAN-CVE-2026-72037
Debian:13linux6.12.100-1DEBIAN-CVE-2026-72037
Debian:14linux7.1.5-1DEBIAN-CVE-2026-72037
Ubuntu:24.04:LTSlinux6.8.0-147.147UBUNTU-CVE-2026-72037
Ubuntu:26.04:LTSlinux7.0.0-38.38UBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-aws6.8.0-1067.70UBUNTU-CVE-2026-72037
Ubuntu:26.04:LTSlinux-aws7.0.0-1014.14UBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-aws-7.07.0.0-1014.14~24.04.1UBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-azure6.8.0-1071.79UBUNTU-CVE-2026-72037
Ubuntu:26.04:LTSlinux-azure7.0.0-1017.17UBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-azure-7.07.0.0-1017.17~24.04.1UBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1069.76UBUNTU-CVE-2026-72037
Ubuntu:26.04:LTSlinux-azure-fde7.0.0-1016.16UBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-azure-fde-7.07.0.0-1016.16~24.04.1UBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-gcp6.8.0-1071.79UBUNTU-CVE-2026-72037
Ubuntu:26.04:LTSlinux-gcp7.0.0-1014.14UBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-gcp-7.07.0.0-1014.14~24.04.1UBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-gke6.8.0-1066.74UBUNTU-CVE-2026-72037
Ubuntu:26.04:LTSlinux-gke7.0.0-1008.9UBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1052.56UBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-38.38~24.04.4UBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-ibm6.8.0-1067.68UBUNTU-CVE-2026-72037
Ubuntu:26.04:LTSlinux-ibm7.0.0-1015.15UBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-147.147.1UBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-72037
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-nvidia-7.07.0.0-1024.25~24.04.1UBUNTU-CVE-2026-72037
Ubuntu:26.04:LTSlinux-nvidia-bos7.0.0-2022.23UBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-72037
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1015.15UBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-oracle6.8.0-1064.67UBUNTU-CVE-2026-72037
Ubuntu:26.04:LTSlinux-oracle7.0.0-1013.13UBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-oracle-7.07.0.0-1013.13~24.04.1UBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-72037
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-72037
Ubuntu:26.04:LTSlinux-realtime7.0.0-38.38.1UBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-72037
Ubuntu:26.04:LTSlinux-riscv7.0.0-38.38.1UBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-38.38.1~24.04.1UBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-72037
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-vmware6.8.0-1008.8UBUNTU-CVE-2026-72037
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-72037

Affected products (as reported)

VendorProductVersions
Linux Linux 46b777ad9a8c269113634cee6a380bc4e53f3964 – before dfaefd9a7808736fcd2ed0de108f55c4badc15cc46b777ad9a8c269113634cee6a380bc4e53f3964 – before 6523daa6852b1bfef32ec7a105b0217e8a11568746b777ad9a8c269113634cee6a380bc4e53f3964 – before b6a93a42e0e61f0ba0005a942ee3bffb16c0574e46b777ad9a8c269113634cee6a380bc4e53f3964 – before 99a6f37b113c46815deb160c5012073563679ef446b777ad9a8c269113634cee6a380bc4e53f3964 – before b99e890e6b32ffa11c145a16fefcf2c7137a957846b777ad9a8c269113634cee6a380bc4e53f3964 – before 39139b1c1c2b614096519b526112c726adb12ff0
Linux Linux 6.0

References