libexpr: Do not overflow heap buffer when there are too many formal a…#14439
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Ericson2314 merged 1 commit intomasterfrom Nov 1, 2025
Merged
libexpr: Do not overflow heap buffer when there are too many formal a…#14439Ericson2314 merged 1 commit intomasterfrom
Ericson2314 merged 1 commit intomasterfrom
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…rguments 3a3c062 introduced a buffer overflow for the case when there are more than 65535 formal arguments. It is a perfectly reasonable limitation, but we *must* not crash, corrupt memory or otherwise crash the process. Add a test for the graceful behavior and switch to using an explicit uninitialized_copy_n to further guard against buffer overflows.
Ericson2314
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Nov 1, 2025
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Good catch, sorry I missed this. |
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…rguments
Motivation
3a3c062 introduced a buffer overflow for the case when there are more than 65535 formal arguments. It is a perfectly reasonable limitation, but we must not crash, corrupt memory or otherwise crash the process.
Add a test for the graceful behavior and switch to using an explicit uninitialized_copy_n to further guard against buffer overflows.
Context
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