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Correct problem with memory access violation for incorrect PPD file#5623
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ppawliczek wants to merge 1 commit into
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Correct problem with memory access violation for incorrect PPD file#5623ppawliczek wants to merge 1 commit into
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ParamCustom* keywords with the same name and different type. In this case the PPD parser may cause memory leak or memory violation when one of the type is PPD_CUSTOM_PASSCODE, PPD_CUSTOM_PASSWORD or PPD_CUSTOM_STRING.
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@ppawliczek Please attach the problematic PPD file. |
Author
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The PPS file is incorrect, however it should not cause incorrect memory reads. clusterfuzz-testcase-minimized-cups_ppdopen_fuzzer-6243187697647616.zip |
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The problem occurres when an input PPD file contains a pair of the same
ParamCustom* keywords with the same name and different type. In this case
the PPD parser may cause memory leak or memory violation when one of
the type is PPD_CUSTOM_PASSCODE, PPD_CUSTOM_PASSWORD or PPD_CUSTOM_STRING.
A parameter with expected parameter type is added to ppd_get_cparam(...).