Tracker / CVE-2026-45981
CVE-2026-45981
In the Linux kernel, the following vulnerability has been resolved: s390/cio: Fix device lifecycle handling in css_alloc_subchannel() `css_alloc_subchannel()` calls `device_initialize()` before setting up the DMA masks. If `dma_set_coherent_mask()` or `dma_set_mask()` fails, the error path frees the subchannel structure directly, bypassing the device model reference counting. Once `device_initialize()` has been called, the embedded struct device must be released via `put_device()`, allowing the release callback to free the container structure. Fix the error path by dropping the initial device reference with `put_device()` instead of calling `kfree()` directly. This ensures correct device lifetime handling and avoids potential use-after-free or double-free issues.
Prodotti e versioni affette
| linux | linux_kernel · 3.10 → 6.6.128 |
|---|---|
| linux | linux_kernel · 6.13 → 6.18.14 |
| linux | linux_kernel · 6.19 → 6.19.4 |
| linux | linux_kernel · 6.7 → 6.12.75 |