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`.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/1bf8761eb59e94bf7b8c17b2a1ee48f14378b172 Patch
- git.kernel.org/stable/c/2fc25a4c2e055cd42ea39a1b42c89bfef70e0319 Patch
- git.kernel.org/stable/c/9f39fa07259eb342908e4aa0271dee038a8ce4f8 Patch
- git.kernel.org/stable/c/a47ae40339c1048f519df33ff8840731720f57cb Patch
- git.kernel.org/stable/c/c16ac4e173a05011437a2d868f70cc415339065a Patch
- git.kernel.org/stable/c/c8c607a77aab783f2e38cc2e0f24aa6c8f6d200b Patch
- git.kernel.org/stable/c/cc797d4821c754c701d9714b58bea947e31dbbe0 Patch
- git.kernel.org/stable/c/f3f8ec00cfb8d8e826e30b1138a56355b88e9ba8 Patch
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 13 November 2026
- CWE
- CWE-787
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