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-rw-r--r--meta/recipes-support/vim/files/CVE-2021-3778.patch34
1 files changed, 34 insertions, 0 deletions
diff --git a/meta/recipes-support/vim/files/CVE-2021-3778.patch b/meta/recipes-support/vim/files/CVE-2021-3778.patch
new file mode 100644
index 0000000000..04ac413e56
--- /dev/null
+++ b/meta/recipes-support/vim/files/CVE-2021-3778.patch
@@ -0,0 +1,34 @@
+From 9ba62f1042513fcadcc4e8fdcee171db66ef1d69 Mon Sep 17 00:00:00 2001
+From: Bram Moolenaar <Bram@vim.org>
+Date: Fri, 24 Sep 2021 15:15:24 +0800
+Subject: [PATCH] patch 8.2.3409: reading beyond end of line with invalid utf-8
+ character
+
+Problem: Reading beyond end of line with invalid utf-8 character.
+Solution: Check for NUL when advancing.
+
+Upstream-Status: Backport [https://github.com/vim/vim/commit/65b605665997fad54ef39a93199e305af2fe4d7f]
+CVE: CVE-2021-3778
+
+Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
+---
+ src/regexp_nfa.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/src/regexp_nfa.c b/src/regexp_nfa.c
+index fb512f961..2806408de 100644
+--- a/src/regexp_nfa.c
++++ b/src/regexp_nfa.c
+@@ -5455,7 +5455,8 @@ find_match_text(colnr_T startcol, int regstart, char_u *match_text)
+ match = FALSE;
+ break;
+ }
+- len2 += MB_CHAR2LEN(c2);
++ len2 += enc_utf8 ? utf_ptr2len(rex.line + col + len2)
++ : MB_CHAR2LEN(c2);
+ }
+ if (match
+ // check that no composing char follows
+--
+2.17.1
+