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SUSE:SLE-15-SP7:GA
php7.24755
php7-CVE-2017-8923.patch
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File php7-CVE-2017-8923.patch of Package php7.24755
Index: php-7.4.6/Zend/zend_vm_def.h =================================================================== --- php-7.4.6.orig/Zend/zend_vm_def.h 2020-05-12 10:09:28.000000000 +0200 +++ php-7.4.6/Zend/zend_vm_def.h 2022-02-14 19:11:31.337661619 +0100 @@ -416,6 +416,9 @@ ZEND_VM_HANDLER(8, ZEND_CONCAT, CONST|TM !ZSTR_IS_INTERNED(op1_str) && GC_REFCOUNT(op1_str) == 1) { size_t len = ZSTR_LEN(op1_str); + if (UNEXPECTED(len > ZSTR_MAX_LEN - ZSTR_LEN(op2_str))) { + zend_error_noreturn(E_ERROR, "Integer overflow in memory allocation"); + } str = zend_string_extend(op1_str, len + ZSTR_LEN(op2_str), 0); memcpy(ZSTR_VAL(str) + len, ZSTR_VAL(op2_str), ZSTR_LEN(op2_str)+1); ZVAL_NEW_STR(EX_VAR(opline->result.var), str); Index: php-7.4.6/Zend/zend_vm_execute.h =================================================================== --- php-7.4.6.orig/Zend/zend_vm_execute.h 2020-05-12 10:09:30.000000000 +0200 +++ php-7.4.6/Zend/zend_vm_execute.h 2022-02-14 19:11:31.345661664 +0100 @@ -7454,6 +7454,9 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FAST !ZSTR_IS_INTERNED(op1_str) && GC_REFCOUNT(op1_str) == 1) { size_t len = ZSTR_LEN(op1_str); + if (UNEXPECTED(len > ZSTR_MAX_LEN - ZSTR_LEN(op2_str))) { + zend_error_noreturn(E_ERROR, "Integer overflow in memory allocation"); + } str = zend_string_extend(op1_str, len + ZSTR_LEN(op2_str), 0); memcpy(ZSTR_VAL(str) + len, ZSTR_VAL(op2_str), ZSTR_LEN(op2_str)+1); ZVAL_NEW_STR(EX_VAR(opline->result.var), str); @@ -9908,6 +9911,9 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FAST !ZSTR_IS_INTERNED(op1_str) && GC_REFCOUNT(op1_str) == 1) { size_t len = ZSTR_LEN(op1_str); + if (UNEXPECTED(len > ZSTR_MAX_LEN - ZSTR_LEN(op2_str))) { + zend_error_noreturn(E_ERROR, "Integer overflow in memory allocation"); + } str = zend_string_extend(op1_str, len + ZSTR_LEN(op2_str), 0); memcpy(ZSTR_VAL(str) + len, ZSTR_VAL(op2_str), ZSTR_LEN(op2_str)+1); ZVAL_NEW_STR(EX_VAR(opline->result.var), str); @@ -13877,6 +13883,9 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FAST !ZSTR_IS_INTERNED(op1_str) && GC_REFCOUNT(op1_str) == 1) { size_t len = ZSTR_LEN(op1_str); + if (UNEXPECTED(len > ZSTR_MAX_LEN - ZSTR_LEN(op2_str))) { + zend_error_noreturn(E_ERROR, "Integer overflow in memory allocation"); + } str = zend_string_extend(op1_str, len + ZSTR_LEN(op2_str), 0); memcpy(ZSTR_VAL(str) + len, ZSTR_VAL(op2_str), ZSTR_LEN(op2_str)+1); ZVAL_NEW_STR(EX_VAR(opline->result.var), str); @@ -15294,6 +15303,9 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FAST !ZSTR_IS_INTERNED(op1_str) && GC_REFCOUNT(op1_str) == 1) { size_t len = ZSTR_LEN(op1_str); + if (UNEXPECTED(len > ZSTR_MAX_LEN - ZSTR_LEN(op2_str))) { + zend_error_noreturn(E_ERROR, "Integer overflow in memory allocation"); + } str = zend_string_extend(op1_str, len + ZSTR_LEN(op2_str), 0); memcpy(ZSTR_VAL(str) + len, ZSTR_VAL(op2_str), ZSTR_LEN(op2_str)+1); ZVAL_NEW_STR(EX_VAR(opline->result.var), str); @@ -16974,6 +16986,9 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FAST !ZSTR_IS_INTERNED(op1_str) && GC_REFCOUNT(op1_str) == 1) { size_t len = ZSTR_LEN(op1_str); + if (UNEXPECTED(len > ZSTR_MAX_LEN - ZSTR_LEN(op2_str))) { + zend_error_noreturn(E_ERROR, "Integer overflow in memory allocation"); + } str = zend_string_extend(op1_str, len + ZSTR_LEN(op2_str), 0); memcpy(ZSTR_VAL(str) + len, ZSTR_VAL(op2_str), ZSTR_LEN(op2_str)+1); ZVAL_NEW_STR(EX_VAR(opline->result.var), str); @@ -38511,6 +38526,9 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FAST !ZSTR_IS_INTERNED(op1_str) && GC_REFCOUNT(op1_str) == 1) { size_t len = ZSTR_LEN(op1_str); + if (UNEXPECTED(len > ZSTR_MAX_LEN - ZSTR_LEN(op2_str))) { + zend_error_noreturn(E_ERROR, "Integer overflow in memory allocation"); + } str = zend_string_extend(op1_str, len + ZSTR_LEN(op2_str), 0); memcpy(ZSTR_VAL(str) + len, ZSTR_VAL(op2_str), ZSTR_LEN(op2_str)+1); ZVAL_NEW_STR(EX_VAR(opline->result.var), str); @@ -42054,6 +42072,9 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FAST !ZSTR_IS_INTERNED(op1_str) && GC_REFCOUNT(op1_str) == 1) { size_t len = ZSTR_LEN(op1_str); + if (UNEXPECTED(len > ZSTR_MAX_LEN - ZSTR_LEN(op2_str))) { + zend_error_noreturn(E_ERROR, "Integer overflow in memory allocation"); + } str = zend_string_extend(op1_str, len + ZSTR_LEN(op2_str), 0); memcpy(ZSTR_VAL(str) + len, ZSTR_VAL(op2_str), ZSTR_LEN(op2_str)+1); ZVAL_NEW_STR(EX_VAR(opline->result.var), str); @@ -47116,6 +47137,9 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FAST !ZSTR_IS_INTERNED(op1_str) && GC_REFCOUNT(op1_str) == 1) { size_t len = ZSTR_LEN(op1_str); + if (UNEXPECTED(len > ZSTR_MAX_LEN - ZSTR_LEN(op2_str))) { + zend_error_noreturn(E_ERROR, "Integer overflow in memory allocation"); + } str = zend_string_extend(op1_str, len + ZSTR_LEN(op2_str), 0); memcpy(ZSTR_VAL(str) + len, ZSTR_VAL(op2_str), ZSTR_LEN(op2_str)+1); ZVAL_NEW_STR(EX_VAR(opline->result.var), str); Index: php-7.4.6/Zend/zend_string.h =================================================================== --- php-7.4.6.orig/Zend/zend_string.h 2022-02-14 19:11:31.325661552 +0100 +++ php-7.4.6/Zend/zend_string.h 2022-02-14 19:13:34.566349784 +0100 @@ -75,6 +75,9 @@ END_EXTERN_C() #define _ZSTR_STRUCT_SIZE(len) (_ZSTR_HEADER_SIZE + len + 1) +#define ZSTR_MAX_OVERHEAD (ZEND_MM_ALIGNED_SIZE(_ZSTR_HEADER_SIZE + 1)) +#define ZSTR_MAX_LEN (SIZE_MAX - ZSTR_MAX_OVERHEAD) + #define ZSTR_ALLOCA_ALLOC(str, _len, use_heap) do { \ (str) = (zend_string *)do_alloca(ZEND_MM_ALIGNED_SIZE_EX(_ZSTR_STRUCT_SIZE(_len), 8), (use_heap)); \ GC_SET_REFCOUNT(str, 1); \
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