linux: In the Linux kernel, the following vulnerability has been resolved: comedi: dt9812: fix DMA buffers on stack USB tr...
CVE-2021-47477 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47477, released May 22, 2024. It is not reported as exploited. Patch Radar priority: High.
In the Linux kernel, the following vulnerability has been resolved: comedi: dt9812: fix DMA buffers on stack USB transfer buffers are typically mapped for DMA and must not be allocated on the stack or transfers will fail. Allocate proper transfer buffers in the various command helpers and return an error on short transfers instead of acting on random stack data. Note that this also fixes a stack info leak on systems where DMA is not used as 32 bytes are always sent to the device regardless of how short the command is.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 5.15.3-1 | DEBIAN-CVE-2021-47477 | May 22, 2024 |
| linux · Debian 13.5 (trixie) | 5.15.3-1 | DEBIAN-CVE-2021-47477 | May 22, 2024 |
| linux · Debian 14 | 5.15.3-1 | DEBIAN-CVE-2021-47477 | May 22, 2024 |
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