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SUSE:SLE-12-SP3:GA
nasm.5265
memory_fixes.patch
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File memory_fixes.patch of Package nasm.5265
Author: Adam Majer <amajer@suse.de> Date: Tue Jul 25 13:03:57 CEST 2017 Summary: Fix use after free and buffer overflow BSC: 1047925 1047936 Submitted upstream in linked bug reports. https://bugzilla.nasm.us/show_bug.cgi?id=3392414 https://bugzilla.nasm.us/show_bug.cgi?id=3392415 Index: nasm-2.10.09/preproc.c =================================================================== --- nasm-2.10.09.orig/preproc.c +++ nasm-2.10.09/preproc.c @@ -1269,8 +1269,8 @@ static char *detoken(Token * tlist, bool p = ""; } t->text = nasm_strdup(p); + nasm_free(q); } - nasm_free(q); } /* Expand local macros here and not during preprocessing */ @@ -3714,9 +3714,15 @@ static bool paste_tokens(Token **head, c len += strlen(tok->text); p = buf = nasm_malloc(len + 1); + strcpy(p, tok->text); + p = strchr(p, '\0'); + tok = delete_Token(tok); + while (tok != next) { - strcpy(p, tok->text); - p = strchr(p, '\0'); + if (PP_CONCAT_MATCH(tok, m[i].mask_tail)) { + strcpy(p, tok->text); + p = strchr(p, '\0'); + } tok = delete_Token(tok); } @@ -4961,8 +4967,9 @@ static char *pp_getline(void) nasm_free(m->paramlen); l->finishes->in_progress = 0; } - } else - free_mmacro(m); + } else { + // free_mmacro(m); + } } istk->expansion = l->next; nasm_free(l);
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