CVE-2026-97412
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 45d76f492938cdc27ddadc16e1e75103f4cfbf56 < cc8beb70e70fc90e54efdbc1128cf7de799e6be4 | affected |
| Linux | Linux | 45d76f492938cdc27ddadc16e1e75103f4cfbf56 < 9eee6b90bee3df496ed9094d9e76d5e478d72d0a | affected |
| Linux | Linux | 45d76f492938cdc27ddadc16e1e75103f4cfbf56 < 6443f4f20bdae726fe01cf5946fba9742a0ffda6 | affected |
| Linux | Linux | 6.4 | affected |
| Linux | Linux | 0 < 6.4 | unaffected |
| Linux | Linux | 6.12.111 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.53 <= 6.18.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/cc8beb70e70fc90e54efdbc1128cf7de799e6be4
- https://git.kernel.org/stable/c/9eee6b90bee3df496ed9094d9e76d5e478d72d0a
- https://git.kernel.org/stable/c/6443f4f20bdae726fe01cf5946fba9742a0ffda6
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