High · published February 26, 2025
In the Linux kernel, the following vulnerability has been resolved:
IB/rdmavt: add lock to call to rvt_error_qp to prevent a race condition
The documentation of the function rvt_error_qp says both r_lock and s_lock
need to be held when calling that function. It also asserts using lockdep
that both of those locks are held. However, the commit I referenced in
Fixes accidentally makes the call to rvt_error_qp in rvt_ruc_loopback no
longer covered by r_lock. This results in the lockdep assertion failing
and also possibly in a race condition.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 5.0.4, < 5.4.189 | 5.4.189 |
| linux/linux_kernel | ≥ 5.5, < 5.10.111 | 5.10.111 |
| linux/linux_kernel | ≥ 5.11, < 5.15.34 | 5.15.34 |
| linux/linux_kernel | ≥ 5.16, < 5.16.20 | 5.16.20 |
| linux/linux_kernel | ≥ 5.17, < 5.17.3 | 5.17.3 |
| linux/linux_kernel | all versions | — |