Description
In the Linux kernel, the following vulnerability has been resolved:
comedi: me_daq: Fix potential overrun of firmware buffer
`me2600_xilinx_download()` loads the firmware that was requested by `request_firmware()`. It is possible for it to overrun the source buffer because it blindly trusts the file format. It reads a data stream length from the first 4 bytes into variable `file_length` and reads the data stream contents of length `file_length` from offset 16 onwards. Although it checks that the supplied firmware is at least 16 bytes long, it does not check that it is long enough to contain the data stream.
Add a test to ensure that the supplied firmware is long enough to contain the header and the data stream. On failure, log an error and return `-EINVAL`.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 85acac61096f946a78cf0c4b65f7cebe580693b6, < 2fc25a4c2e055cd42ea39a1b42c89bfef70e0319; >= 85acac61096f946a78cf0c4b65f7cebe580693b6, < 9f39fa07259eb342908e4aa0271dee038a8ce4f8; >= 85acac61096f946a78cf0c4b65f7cebe580693b6, < f3f8ec00cfb8d8e826e30b1138a56355b88e9ba8; >= 85acac61096f946a78cf0c4b65f7cebe580693b6, < c16ac4e173a05011437a2d868f70cc415339065a; >= 85acac61096f946a78cf0c4b65f7cebe580693b6, < 1bf8761eb59e94bf7b8c17b2a1ee48f14378b172; >= 85acac61096f946a78cf0c4b65f7cebe580693b6, < a47ae40339c1048f519df33ff8840731720f57cb; >= 85acac61096f946a78cf0c4b65f7cebe580693b6, < c8c607a77aab783f2e38cc2e0f24aa6c8f6d200b; >= 85acac61096f946a78cf0c4b65f7cebe580693b6, < cc797d4821c754c701d9714b58bea947e31dbbe0 |
| Linux | Linux | 2.6.29 |
References
- https://git.kernel.org/stable/c/1bf8761eb59e94bf7b8c17b2a1ee48f14378b172Patch
- https://git.kernel.org/stable/c/2fc25a4c2e055cd42ea39a1b42c89bfef70e0319Patch
- https://git.kernel.org/stable/c/9f39fa07259eb342908e4aa0271dee038a8ce4f8Patch
- https://git.kernel.org/stable/c/a47ae40339c1048f519df33ff8840731720f57cbPatch
- https://git.kernel.org/stable/c/c16ac4e173a05011437a2d868f70cc415339065aPatch
- https://git.kernel.org/stable/c/c8c607a77aab783f2e38cc2e0f24aa6c8f6d200bPatch
- https://git.kernel.org/stable/c/cc797d4821c754c701d9714b58bea947e31dbbe0Patch
- https://git.kernel.org/stable/c/f3f8ec00cfb8d8e826e30b1138a56355b88e9ba8Patch
Timeline
- Published
- May 1, 2026
- Last modified
- Nov 11, 2026
- NVD status
- Analyzed