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CVE-2020-24240
Published: Aug 25, 2020
Modified: Aug 4, 2024
PUBLISHED
Description
GNU Bison before 3.7.1 has a use-after-free in _obstack_free in lib/obstack.c (called from gram_lex) when a '\0' byte is encountered. NOTE: there is a risk only if Bison is used with untrusted input, and the observed bug happens to cause unsafe behavior with a specific compiler/architecture. The bug report was intended to show that a crash may occur in Bison itself, not that a crash may occur in code that is generated by Bison.
| Vendor | Product | Versions |
|---|---|---|
n/a | n/a | affected n/a |
References
https://lists.gnu.org/r/bug-bison/2020-07/msg00051.html
x_refsource_MISC
https://github.com/akimd/bison/compare/v3.7...v3.7.1
x_refsource_MISC
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