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Fix Lua remote code execution (CVE-2025-49844, CVE-2025-46819, CVE-2025-46817)) #918

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Fix Lua remote code execution (CVE-2025-49844, CVE-2025-46819, CVE-2025-46817)) #918

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c4402b8
Lua script may lead to remote code execution (CVE-2025-49844)
KIMDONGYEON00 Oct 7, 2025
2fcb98e
LUA out-of-bound read (CVE-2025-46819)
KIMDONGYEON00 Oct 20, 2025
8a2c1aa
Fix Lua Library (CVE-2025-46817)
KIMDONGYEON00 Oct 20, 2025
8b92a9a
Fix Lua Library (CVE-2025-46817)
KIMDONGYEON00 Oct 20, 2025
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6 changes: 5 additions & 1 deletion deps/lua/src/lparser.c
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Original file line number Diff line number Diff line change
Expand Up @@ -384,13 +384,17 @@ Proto *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff, const char *name) {
struct LexState lexstate;
struct FuncState funcstate;
lexstate.buff = buff;
luaX_setinput(L, &lexstate, z, luaS_new(L, name));
TString *tname = luaS_new(L, name);
setsvalue2s(L, L->top, tname);
incr_top(L);
luaX_setinput(L, &lexstate, z, tname);
open_func(&lexstate, &funcstate);
funcstate.f->is_vararg = VARARG_ISVARARG; /* main func. is always vararg */
luaX_next(&lexstate); /* read first token */
chunk(&lexstate);
check(&lexstate, TK_EOS);
close_func(&lexstate);
--L->top;
lua_assert(funcstate.prev == NULL);
lua_assert(funcstate.f->nups == 0);
lua_assert(lexstate.fs == NULL);
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