Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 46b777ad9a8c269113634cee6a380bc4e53f3964 before dfaefd9a7808736fcd2ed0de108f55c4badc15cc; affected 46b777ad9a8c269113634cee6a380bc4e53f3964 before 6523daa6852b1bfef32ec7a105b0217e8a115687; affected 46b777ad9a8c269113634cee6a380bc4e53f3964 before b6a93a42e0e61f0ba0005a942ee3bffb16c0574e; affected 46b777ad9a8c269113634cee6a380bc4e53f3964 before 99a6f37b113c46815deb160c5012073563679ef4; affected 46b777ad9a8c269113634cee6a380bc4e53f3964 before b99e890e6b32ffa11c145a16fefcf2c7137a9578; affected 46b777ad9a8c269113634cee6a380bc4e53f3964 before 39139b1c1c2b614096519b526112c726adb12ff0 |
| Linux / Linux | affected 6.0; unaffected 0 before 6.0; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/dfaefd9a7808736fcd2ed0de108f55c4badc15cc
- https://git.kernel.org/stable/c/6523daa6852b1bfef32ec7a105b0217e8a115687
- https://git.kernel.org/stable/c/b6a93a42e0e61f0ba0005a942ee3bffb16c0574e
- https://git.kernel.org/stable/c/99a6f37b113c46815deb160c5012073563679ef4
- https://git.kernel.org/stable/c/b99e890e6b32ffa11c145a16fefcf2c7137a9578
- https://git.kernel.org/stable/c/39139b1c1c2b614096519b526112c726adb12ff0