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SUSE:SLE-12-SP3:Update
liblouis
liblouis-CVE-2023-26769.patch
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File liblouis-CVE-2023-26769.patch of Package liblouis
diff -Nura liblouis-2.6.4/liblouis/compileTranslationTable.c liblouis-2.6.4_new/liblouis/compileTranslationTable.c --- liblouis-2.6.4/liblouis/compileTranslationTable.c 2023-04-02 22:26:44.259285917 +0800 +++ liblouis-2.6.4_new/liblouis/compileTranslationTable.c 2023-04-02 23:04:54.926640037 +0800 @@ -4609,9 +4609,10 @@ char *tableFile; static struct stat info; +#define MAX_TABLEFILE_SIZE (MAXSTRING * sizeof(char) * 2) if (table == NULL || table[0] == '\0') return NULL; - tableFile = (char *) malloc (MAXSTRING * sizeof(char) * 2); + tableFile = (char *)malloc(MAX_TABLEFILE_SIZE); // // First try to resolve against base @@ -4619,10 +4620,12 @@ if (base) { int k; + if (strlen(base) >= MAX_TABLEFILE_SIZE) goto failure; strcpy (tableFile, base); for (k = strlen (tableFile); k >= 0 && tableFile[k] != DIR_SEP; k--) ; tableFile[++k] = '\0'; + if (strlen(tableFile) + strlen(table) >= MAX_TABLEFILE_SIZE) goto failure; strcat (tableFile, table); if (stat (tableFile, &info) == 0 && !(info.st_mode & S_IFDIR)) return tableFile; @@ -4632,6 +4635,7 @@ // It could be an absolute path, or a path relative to the current working // directory // + if (strlen(table) >= MAX_TABLEFILE_SIZE) goto failure; strcpy (tableFile, table); if (stat (tableFile, &info) == 0 && !(info.st_mode & S_IFDIR)) return tableFile; @@ -4653,6 +4657,10 @@ *cp = '\0'; if (dir == cp) dir = "."; + if (strlen(dir) + strlen(table) + 1 >= MAX_TABLEFILE_SIZE) { + free(searchPath_copy); + goto failure; + } sprintf (tableFile, "%s%c%s", dir, DIR_SEP, table); if (stat (tableFile, &info) == 0 && !(info.st_mode & S_IFDIR)) { @@ -4661,9 +4669,22 @@ } if (last) break; + if (strlen(dir) + strlen("liblouis") + strlen("tables") + strlen(table) + 3 >= + MAX_TABLEFILE_SIZE) { + free(searchPath_copy); + goto failure; + } + sprintf(tableFile, "%s%c%s%c%s%c%s", dir, DIR_SEP, "liblouis", DIR_SEP, + "tables", DIR_SEP, table); + if (stat(tableFile, &info) == 0 && !(info.st_mode & S_IFDIR)) { + free(searchPath_copy); + return tableFile; + } + if (last) break; } free(searchPath_copy); } +failure: free (tableFile); return NULL; }
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