Overview
About vulnerability
In the Linux kernel, the following vulnerability has been resolved:
spi: tegra210-quad: Protect curr_xfer in tegra_qspi_combined_seq_xfer
The curr_xfer field is read by the IRQ handler without holding the lock to check if a transfer is in progress. When clearing curr_xfer in the combined sequence transfer loop, protect it with the spinlock to prevent a race with the interrupt handler.
Protect the curr_xfer clearing at the exit path of tegra_qspi_combined_seq_xfer() with the spinlock to prevent a race with the interrupt handler that reads this field.
Without this protection, the IRQ handler could read a partially updated curr_xfer value, leading to NULL pointer dereference or use-after-free.
Details
- Affected product:
- Ubuntu 20.04 ELS
- Affected packages:
- linux-meta @ 5.4.0 (+1 more)
Fixes
KernelCare state
Live-patch status from KernelCare for each operating system.
| Operating system | Status | Covered kernels |
|---|---|---|
| Debian 12 | Released |
1 kernel
|
| Debian 13 | Planned | — |
| Oracle Linux 8 UEK 7 | Will Not Fix |
85 kernels
|
| Oracle Linux 9 UEK 7 | Will Not Fix |
85 kernels
|
| Proxmox VE 7 5.15 | Released |
47 kernels
|
| Ubuntu 20.04 HWE AWS | Released |
57 kernels
|
| Ubuntu 20.04 HWE Azure | Released |
40 kernels
|
| Ubuntu 22.04 | Released |
96 kernels
|
| Ubuntu 22.04 AWS | Released |
87 kernels
|
| Ubuntu 22.04 Azure | Released |
77 kernels
|
| Ubuntu 24.04 | Will Not Fix |
43 kernels
|
| Ubuntu 24.04 AWS | Planned | — |