comedi: me_daq: Fix potential overrun of firmware buffer
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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`.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.29
References 8
git.kernel.org
- stable/c/2fc25a4c2e055cd42ea39a1b42c89bfef70e0319
- stable/c/9f39fa07259eb342908e4aa0271dee038a8ce4f8
- stable/c/f3f8ec00cfb8d8e826e30b1138a56355b88e9ba8
- stable/c/c16ac4e173a05011437a2d868f70cc415339065a
- stable/c/1bf8761eb59e94bf7b8c17b2a1ee48f14378b172
- stable/c/a47ae40339c1048f519df33ff8840731720f57cb
- stable/c/c8c607a77aab783f2e38cc2e0f24aa6c8f6d200b
- stable/c/cc797d4821c754c701d9714b58bea947e31dbbe0