ef37cd41df
2018-08-01: Avoid OOB read on invalid entry point length Don't let the entry point checksum verification run beyond the end of the buffer holding it (32 bytes). This bug was discovered by Lionel Debroux using the AFL fuzzer and AddressSanitizer. Signed-off-by: Jean Delvare <jdelvare@suse.de> 2018-08-01: Validate structure completeness before decoding Ensure that the whole DMI structure fits in the announced table length before performing any action on it. Otherwise we might end up reading beyond the end of our memory buffer. This bug was discovered by Lionel Debroux using the AFL fuzzer and AddressSanitizer. Its probability is very low, as it requires a DMI table corrupted in one of two very specific ways to trigger. This bug exists since dmidecode version 2.9, although it is hard to test because option --from-dump was only introduced in version 2.10. Signed-off-by: Jean Delvare <jdelvare@suse.de> |
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