Fix #24155 - asmop.mnemonic can be null ##crash

radare · radare · commit ecd493df91f6 · 2025-04-22T07:42:59.000+02:00
diff --git a/libr/core/disasm.c b/libr/core/disasm.c
@@ -7515,7 +7515,7 @@ R_IPI int r_core_print_disasm_json_ipi(RCore *core, ut64 addr, ut8 *buf, int nb_
 			continue;
 		}
 
-		char *opstr = strdup (asmop.mnemonic);
+		char *opstr = strdup (asmop.mnemonic? asmop.mnemonic: "");
 		core->rasm->pseudo = opseudo;
 
 		ds->has_description = false;
@@ -7557,7 +7557,7 @@ R_IPI int r_core_print_disasm_json_ipi(RCore *core, ut64 addr, ut8 *buf, int nb_
 				core->rasm->parse->subrel_addr = killme;
 			}
 		}
-		char *disasm = strdup (asmop.mnemonic);
+		char *disasm = strdup (asmop.mnemonic? asmop.mnemonic: "");
 		{
 			char *buf = ds_sub_jumps (ds, disasm);
 			if (buf) {

Original file line number	Diff line number	Diff line change
`@@ -7515,7 +7515,7 @@ R_IPI int r_core_print_disasm_json_ipi(RCore core, ut64 addr, ut8 buf, int nb_`
`7515`	`7515`	`continue;`
`7516`	`7516`	`}`
`7517`	`7517`
`7518`		`- char *opstr = strdup (asmop.mnemonic);`
	`7518`	`+ char *opstr = strdup (asmop.mnemonic? asmop.mnemonic: "");`
`7519`	`7519`	`core->rasm->pseudo = opseudo;`
`7520`	`7520`
`7521`	`7521`	`ds->has_description = false;`
`@@ -7557,7 +7557,7 @@ R_IPI int r_core_print_disasm_json_ipi(RCore core, ut64 addr, ut8 buf, int nb_`
`7557`	`7557`	`core->rasm->parse->subrel_addr = killme;`
`7558`	`7558`	`}`
`7559`	`7559`	`}`
`7560`		`- char *disasm = strdup (asmop.mnemonic);`
	`7560`	`+ char *disasm = strdup (asmop.mnemonic? asmop.mnemonic: "");`
`7561`	`7561`	`{`
`7562`	`7562`	`char *buf = ds_sub_jumps (ds, disasm);`
`7563`	`7563`	`if (buf) {`