From 8e5bb5f05cf171889ec2b34dcf24ff1985660074 Mon Sep 17 00:00:00 2001 From: Richard Purdie Date: Mon, 20 Sep 2021 10:55:09 +0100 Subject: [PATCH] vim: Backport fix for CVE-2021-3770 Signed-off-by: Richard Purdie (cherry picked from commit 54d3d023ce55ba4a7160ed25a283f0918e7d8e2e) Signed-off-by: Steve Sakoman --- ...1e135a16091c93f6f5f7525a5c58fb7ca9f9.patch | 207 ++++++++++++++++++ meta/recipes-support/vim/vim.inc | 2 + 2 files changed, 209 insertions(+) create mode 100644 meta/recipes-support/vim/files/b7081e135a16091c93f6f5f7525a5c58fb7ca9f9.patch diff --git a/meta/recipes-support/vim/files/b7081e135a16091c93f6f5f7525a5c58fb7ca9f9.patch b/meta/recipes-support/vim/files/b7081e135a16091c93f6f5f7525a5c58fb7ca9f9.patch new file mode 100644 index 0000000000..1cee759502 --- /dev/null +++ b/meta/recipes-support/vim/files/b7081e135a16091c93f6f5f7525a5c58fb7ca9f9.patch @@ -0,0 +1,207 @@ +From b7081e135a16091c93f6f5f7525a5c58fb7ca9f9 Mon Sep 17 00:00:00 2001 +From: Bram Moolenaar +Date: Sat, 4 Sep 2021 18:47:28 +0200 +Subject: [PATCH] patch 8.2.3402: invalid memory access when using :retab with + large value + +Problem: Invalid memory access when using :retab with large value. +Solution: Check the number is positive. + +CVE: CVE-2021-3770 +Signed-off-by: Richard Purdie +Upstream-Status: Backport [https://github.com/vim/vim/commit/b7081e135a16091c93f6f5f7525a5c58fb7ca9f9] +--- + src/indent.c | 34 +++++++++++++++++++++------------- + src/option.c | 12 ++++++------ + src/optionstr.c | 4 ++-- + src/testdir/test_retab.vim | 3 +++ + src/version.c | 2 ++ + 5 files changed, 34 insertions(+), 21 deletions(-) + +Index: git/src/indent.c +=================================================================== +--- git.orig/src/indent.c ++++ git/src/indent.c +@@ -18,18 +18,19 @@ + /* + * Set the integer values corresponding to the string setting of 'vartabstop'. + * "array" will be set, caller must free it if needed. ++ * Return FAIL for an error. + */ + int + tabstop_set(char_u *var, int **array) + { +- int valcount = 1; +- int t; +- char_u *cp; ++ int valcount = 1; ++ int t; ++ char_u *cp; + + if (var[0] == NUL || (var[0] == '0' && var[1] == NUL)) + { + *array = NULL; +- return TRUE; ++ return OK; + } + + for (cp = var; *cp != NUL; ++cp) +@@ -43,8 +44,8 @@ tabstop_set(char_u *var, int **array) + if (cp != end) + emsg(_(e_positive)); + else +- emsg(_(e_invarg)); +- return FALSE; ++ semsg(_(e_invarg2), cp); ++ return FAIL; + } + } + +@@ -55,26 +56,33 @@ tabstop_set(char_u *var, int **array) + ++valcount; + continue; + } +- emsg(_(e_invarg)); +- return FALSE; ++ semsg(_(e_invarg2), var); ++ return FAIL; + } + + *array = ALLOC_MULT(int, valcount + 1); + if (*array == NULL) +- return FALSE; ++ return FAIL; + (*array)[0] = valcount; + + t = 1; + for (cp = var; *cp != NUL;) + { +- (*array)[t++] = atoi((char *)cp); +- while (*cp != NUL && *cp != ',') ++ int n = atoi((char *)cp); ++ ++ if (n < 0 || n > 9999) ++ { ++ semsg(_(e_invarg2), cp); ++ return FAIL; ++ } ++ (*array)[t++] = n; ++ while (*cp != NUL && *cp != ',') + ++cp; + if (*cp != NUL) + ++cp; + } + +- return TRUE; ++ return OK; + } + + /* +@@ -1556,7 +1564,7 @@ ex_retab(exarg_T *eap) + + #ifdef FEAT_VARTABS + new_ts_str = eap->arg; +- if (!tabstop_set(eap->arg, &new_vts_array)) ++ if (tabstop_set(eap->arg, &new_vts_array) == FAIL) + return; + while (vim_isdigit(*(eap->arg)) || *(eap->arg) == ',') + ++(eap->arg); +Index: git/src/option.c +=================================================================== +--- git.orig/src/option.c ++++ git/src/option.c +@@ -2292,9 +2292,9 @@ didset_options2(void) + #endif + #ifdef FEAT_VARTABS + vim_free(curbuf->b_p_vsts_array); +- tabstop_set(curbuf->b_p_vsts, &curbuf->b_p_vsts_array); ++ (void)tabstop_set(curbuf->b_p_vsts, &curbuf->b_p_vsts_array); + vim_free(curbuf->b_p_vts_array); +- tabstop_set(curbuf->b_p_vts, &curbuf->b_p_vts_array); ++ (void)tabstop_set(curbuf->b_p_vts, &curbuf->b_p_vts_array); + #endif + } + +@@ -5756,7 +5756,7 @@ buf_copy_options(buf_T *buf, int flags) + buf->b_p_vsts = vim_strsave(p_vsts); + COPY_OPT_SCTX(buf, BV_VSTS); + if (p_vsts && p_vsts != empty_option) +- tabstop_set(p_vsts, &buf->b_p_vsts_array); ++ (void)tabstop_set(p_vsts, &buf->b_p_vsts_array); + else + buf->b_p_vsts_array = 0; + buf->b_p_vsts_nopaste = p_vsts_nopaste +@@ -5914,7 +5914,7 @@ buf_copy_options(buf_T *buf, int flags) + buf->b_p_isk = save_p_isk; + #ifdef FEAT_VARTABS + if (p_vts && p_vts != empty_option && !buf->b_p_vts_array) +- tabstop_set(p_vts, &buf->b_p_vts_array); ++ (void)tabstop_set(p_vts, &buf->b_p_vts_array); + else + buf->b_p_vts_array = NULL; + #endif +@@ -5929,7 +5929,7 @@ buf_copy_options(buf_T *buf, int flags) + buf->b_p_vts = vim_strsave(p_vts); + COPY_OPT_SCTX(buf, BV_VTS); + if (p_vts && p_vts != empty_option && !buf->b_p_vts_array) +- tabstop_set(p_vts, &buf->b_p_vts_array); ++ (void)tabstop_set(p_vts, &buf->b_p_vts_array); + else + buf->b_p_vts_array = NULL; + #endif +@@ -6634,7 +6634,7 @@ paste_option_changed(void) + if (buf->b_p_vsts_array) + vim_free(buf->b_p_vsts_array); + if (buf->b_p_vsts && buf->b_p_vsts != empty_option) +- tabstop_set(buf->b_p_vsts, &buf->b_p_vsts_array); ++ (void)tabstop_set(buf->b_p_vsts, &buf->b_p_vsts_array); + else + buf->b_p_vsts_array = 0; + #endif +Index: git/src/optionstr.c +=================================================================== +--- git.orig/src/optionstr.c ++++ git/src/optionstr.c +@@ -2166,7 +2166,7 @@ did_set_string_option( + if (errmsg == NULL) + { + int *oldarray = curbuf->b_p_vsts_array; +- if (tabstop_set(*varp, &(curbuf->b_p_vsts_array))) ++ if (tabstop_set(*varp, &(curbuf->b_p_vsts_array)) == OK) + { + if (oldarray) + vim_free(oldarray); +@@ -2205,7 +2205,7 @@ did_set_string_option( + { + int *oldarray = curbuf->b_p_vts_array; + +- if (tabstop_set(*varp, &(curbuf->b_p_vts_array))) ++ if (tabstop_set(*varp, &(curbuf->b_p_vts_array)) == OK) + { + vim_free(oldarray); + #ifdef FEAT_FOLDING +Index: git/src/testdir/test_retab.vim +=================================================================== +--- git.orig/src/testdir/test_retab.vim ++++ git/src/testdir/test_retab.vim +@@ -74,4 +74,7 @@ endfunc + func Test_retab_error() + call assert_fails('retab -1', 'E487:') + call assert_fails('retab! -1', 'E487:') ++ call assert_fails('ret -1000', 'E487:') ++ call assert_fails('ret 10000', 'E475:') ++ call assert_fails('ret 80000000000000000000', 'E475:') + endfunc +Index: git/src/version.c +=================================================================== +--- git.orig/src/version.c ++++ git/src/version.c +@@ -743,6 +743,8 @@ static char *(features[]) = + static int included_patches[] = + { /* Add new patch number below this line */ + /**/ ++ 3402, ++/**/ + 0 + }; + diff --git a/meta/recipes-support/vim/vim.inc b/meta/recipes-support/vim/vim.inc index 6fe8fb90db..ecaba7107e 100644 --- a/meta/recipes-support/vim/vim.inc +++ b/meta/recipes-support/vim/vim.inc @@ -17,7 +17,9 @@ SRC_URI = "git://github.com/vim/vim.git \ file://0001-src-Makefile-improve-reproducibility.patch \ file://no-path-adjust.patch \ file://racefix.patch \ + file://b7081e135a16091c93f6f5f7525a5c58fb7ca9f9.patch \ " + SRCREV = "98056533b96b6b5d8849641de93185dd7bcadc44" # Do not consider .z in x.y.z, as that is updated with every commit -- 2.40.1