In the Linux kernel, the following vulnerability has been resolved:
net: cadence: macb: Fix a possible deadlock in macb_halt_tx.
There is a situation where after THALT is set high, TGO stays high as well. Because jiffies are never updated, as we are in a context with interrupts disabled, we never exit that loop and have a deadlock.
That deadlock was noticed on a sama5d4 device that stayed locked for days.
Use retries instead of jiffies so that the timeout really works and we do not have a deadlock anymore.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 3.8 | 5.10.238 |
| linux / linux_kernel | 5.11 | 5.15.184 |
| linux / linux_kernel | 5.16 | 6.1.140 |
| linux / linux_kernel | 6.2 | 6.6.92 |
| linux / linux_kernel | 6.7 | 6.12.30 |
| linux / linux_kernel | 6.13 | 6.14.8 |
| linux / linux_kernel | 6.15-rc1 | 6.15-rc1.x |
| linux / linux_kernel | 6.15-rc2 | 6.15-rc2.x |
| linux / linux_kernel | 6.15-rc3 | 6.15-rc3.x |
| linux / linux_kernel | 6.15-rc4 | 6.15-rc4.x |
| linux / linux_kernel | 6.15-rc5 | 6.15-rc5.x |
| linux / linux_kernel | 6.15-rc6 | 6.15-rc6.x |
| debian / debian_linux | 11.0 | 11.0.x |