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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-72037

net: lan743x: Initialize eth_syslock spinlock before use

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Status
Published
Published
Updated
Assigning organization
Linux

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 46b777ad9a8c269113634cee6a380bc4e53f3964 to < dfaefd9a7808736fcd2ed0de108f55c4badc15ccaffected
  • 46b777ad9a8c269113634cee6a380bc4e53f3964 to < 6523daa6852b1bfef32ec7a105b0217e8a115687affected
  • 46b777ad9a8c269113634cee6a380bc4e53f3964 to < b6a93a42e0e61f0ba0005a942ee3bffb16c0574eaffected
  • 46b777ad9a8c269113634cee6a380bc4e53f3964 to < 99a6f37b113c46815deb160c5012073563679ef4affected
  • 46b777ad9a8c269113634cee6a380bc4e53f3964 to < b99e890e6b32ffa11c145a16fefcf2c7137a9578affected
  • 46b777ad9a8c269113634cee6a380bc4e53f3964 to < 39139b1c1c2b614096519b526112c726adb12ff0affected

Linux Linux

Default version status: affected

  • 6.0affected
  • 0 to < 6.0unaffected
  • 6.1.178 to ≤ 6.1.*unaffected
  • 6.6.145 to ≤ 6.6.*unaffected
  • 6.12.97 to ≤ 6.12.*unaffected
  • 6.18.40 to ≤ 6.18.*unaffected
  • 7.1.5 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References