Commit 9a4d4676 authored by Gabriel Krisman Bertazi's avatar Gabriel Krisman Bertazi Committed by Cheng Yu
Browse files

unicode: Don't special case ignorable code points 

stable inclusion
from stable-v5.10.227
commit 39fffca572844d733b137a0ff9eacd67b9b0c8e3
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB2BVC
CVE: CVE-2024-50089

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=39fffca572844d733b137a0ff9eacd67b9b0c8e3



--------------------------------

commit 5c26d2f1d3f5e4be3e196526bead29ecb139cf91 upstream.

We don't need to handle them separately. Instead, just let them
decompose/casefold to themselves.

Signed-off-by: default avatarGabriel Krisman Bertazi <krisman@suse.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarCheng Yu <serein.chengyu@huawei.com>
parent df8594ea

fs/unicode/mkutf8data.c

+0 −70
Original line number Diff line number Diff line
@@ -2230,75 +2230,6 @@ static void nfdicf_init(void) 
		file_fail(fold_name);

}



static void ignore_init(void)

{

	FILE *file;

	unsigned int unichar;

	unsigned int first;

	unsigned int last;

	unsigned int *um;

	int count;

	int ret;



	if (verbose > 0)

		printf("Parsing %s\n", prop_name);

	file = fopen(prop_name, "r");

	if (!file)

		open_fail(prop_name, errno);

	assert(file);

	count = 0;

	while (fgets(line, LINESIZE, file)) {

		ret = sscanf(line, "%X..%X ; %s # ", &first, &last, buf0);

		if (ret == 3) {

			if (strcmp(buf0, "Default_Ignorable_Code_Point"))

				continue;

			if (!utf32valid(first) || !utf32valid(last))

				line_fail(prop_name, line);

			for (unichar = first; unichar <= last; unichar++) {

				free(unicode_data[unichar].utf32nfdi);

				um = malloc(sizeof(unsigned int));

				*um = 0;

				unicode_data[unichar].utf32nfdi = um;

				free(unicode_data[unichar].utf32nfdicf);

				um = malloc(sizeof(unsigned int));

				*um = 0;

				unicode_data[unichar].utf32nfdicf = um;

				count++;

			}

			if (verbose > 1)

				printf(" %X..%X Default_Ignorable_Code_Point\n",

					first, last);

			continue;

		}

		ret = sscanf(line, "%X ; %s # ", &unichar, buf0);

		if (ret == 2) {

			if (strcmp(buf0, "Default_Ignorable_Code_Point"))

				continue;

			if (!utf32valid(unichar))

				line_fail(prop_name, line);

			free(unicode_data[unichar].utf32nfdi);

			um = malloc(sizeof(unsigned int));

			*um = 0;

			unicode_data[unichar].utf32nfdi = um;

			free(unicode_data[unichar].utf32nfdicf);

			um = malloc(sizeof(unsigned int));

			*um = 0;

			unicode_data[unichar].utf32nfdicf = um;

			if (verbose > 1)

				printf(" %X Default_Ignorable_Code_Point\n",

					unichar);

			count++;

			continue;

		}

	}

	fclose(file);



	if (verbose > 0)

		printf("Found %d entries\n", count);

	if (count == 0)

		file_fail(prop_name);

}



static void corrections_init(void)

{

	FILE *file;
@@ -3396,7 +3327,6 @@ int main(int argc, char *argv[]) 
	ccc_init();

	nfdi_init();

	nfdicf_init();

	ignore_init();

	corrections_init();

	hangul_decompose();

	nfdi_decompose();

fs/unicode/utf8data.h_shipped

+3346 −3357

File changed.

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