vim/SOURCES/0001-patch-8.2.4245-retab-0-may-cause-illegal-memory-acce.patch

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2022-03-01 13:12:06 +00:00
diff -up vim82/src/indent.c.cve0417 vim82/src/indent.c
--- vim82/src/indent.c.cve0417 2022-02-09 10:01:34.250009316 +0100
+++ vim82/src/indent.c 2022-02-09 10:02:54.802588536 +0100
@@ -71,7 +71,7 @@ tabstop_set(char_u *var, int **array)
int n = atoi((char *)cp);
// Catch negative values, overflow and ridiculous big values.
- if (n < 0 || n > 9999)
+ if (n < 0 || n > TABSTOP_MAX)
{
semsg(_(e_invarg2), cp);
vim_free(*array);
@@ -1595,7 +1595,7 @@ ex_retab(exarg_T *eap)
emsg(_(e_positive));
return;
}
- if (new_ts < 0 || new_ts > 9999)
+ if (new_ts < 0 || new_ts > TABSTOP_MAX)
{
semsg(_(e_invarg2), eap->arg);
return;
diff -up vim82/src/option.c.cve0417 vim82/src/option.c
--- vim82/src/option.c.cve0417 2022-02-09 10:01:34.196009598 +0100
+++ vim82/src/option.c 2022-02-09 10:28:10.398548161 +0100
@@ -3640,6 +3640,11 @@ set_num_option(
errmsg = e_positive;
curbuf->b_p_ts = 8;
}
+ else if (curbuf->b_p_ts > TABSTOP_MAX)
+ {
+ errmsg = e_invarg;
+ curbuf->b_p_ts = 8;
+ }
if (p_tm < 0)
{
errmsg = e_positive;
@@ -5830,7 +5835,7 @@ buf_copy_options(buf_T *buf, int flags)
if (p_vsts && p_vsts != empty_option)
(void)tabstop_set(p_vsts, &buf->b_p_vsts_array);
else
- buf->b_p_vsts_array = 0;
+ buf->b_p_vsts_array = NULL;
buf->b_p_vsts_nopaste = p_vsts_nopaste
? vim_strsave(p_vsts_nopaste) : NULL;
#endif
@@ -6649,9 +6654,7 @@ paste_option_changed(void)
if (buf->b_p_vsts)
free_string_option(buf->b_p_vsts);
buf->b_p_vsts = empty_option;
- if (buf->b_p_vsts_array)
- vim_free(buf->b_p_vsts_array);
- buf->b_p_vsts_array = 0;
+ VIM_CLEAR(buf->b_p_vsts_array);
#endif
}
@@ -6697,12 +6700,11 @@ paste_option_changed(void)
free_string_option(buf->b_p_vsts);
buf->b_p_vsts = buf->b_p_vsts_nopaste
? vim_strsave(buf->b_p_vsts_nopaste) : empty_option;
- if (buf->b_p_vsts_array)
- vim_free(buf->b_p_vsts_array);
+ vim_free(buf->b_p_vsts_array);
if (buf->b_p_vsts && buf->b_p_vsts != empty_option)
(void)tabstop_set(buf->b_p_vsts, &buf->b_p_vsts_array);
else
- buf->b_p_vsts_array = 0;
+ buf->b_p_vsts_array = NULL;
#endif
}
diff -up vim82/src/testdir/test_options.vim.cve0417 vim82/src/testdir/test_options.vim
--- vim82/src/testdir/test_options.vim.cve0417 2021-03-22 10:02:42.000000000 +0100
+++ vim82/src/testdir/test_options.vim 2022-02-09 10:01:34.251009311 +0100
@@ -362,6 +362,8 @@ func Test_set_errors()
call assert_fails('set shiftwidth=-1', 'E487:')
call assert_fails('set sidescroll=-1', 'E487:')
call assert_fails('set tabstop=-1', 'E487:')
+ call assert_fails('set tabstop=10000', 'E474:')
+ call assert_fails('set tabstop=5500000000', 'E474:')
call assert_fails('set textwidth=-1', 'E487:')
call assert_fails('set timeoutlen=-1', 'E487:')
call assert_fails('set updatecount=-1', 'E487:')
diff -up vim82/src/vim.h.cve0417 vim82/src/vim.h
--- vim82/src/vim.h.cve0417 2021-03-22 10:02:42.000000000 +0100
+++ vim82/src/vim.h 2022-02-09 10:01:34.252009306 +0100
@@ -2032,6 +2032,8 @@ typedef int sock_T;
#define DICT_MAXNEST 100 // maximum nesting of lists and dicts
+#define TABSTOP_MAX 9999
+
#ifdef FEAT_CLIPBOARD
// VIM_ATOM_NAME is the older Vim-specific selection type for X11. Still