CVE-2026-97412

In the Linux kernel, the following vulnerability has been resolved:

pds_core: quiesce DMA before freeing resources

pdsc_teardown() frees DMA buffers but does not disable bus mastering,

leaving the device able to perform DMA after the buffers are freed.

This can lead to use-after-free if the device writes to freed memory.

Add pci_clear_master() to pdsc_teardown() to disable bus mastering

before freeing resources, ensuring all DMA is quiesced.

Add pci_set_master() to pdsc_setup() to re-enable bus mastering,

which is needed for the firmware recovery path since pdsc_teardown()

now disables it.