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-rw-r--r--debian/patches/CVE-2022-2946.patch44
1 files changed, 44 insertions, 0 deletions
diff --git a/debian/patches/CVE-2022-2946.patch b/debian/patches/CVE-2022-2946.patch
new file mode 100644
index 0000000..b3dadb9
--- /dev/null
+++ b/debian/patches/CVE-2022-2946.patch
@@ -0,0 +1,44 @@
+From: Markus Koschany <apo@debian.org>
+Date: Sun, 6 Nov 2022 23:12:54 +0100
+Subject: CVE-2022-2946
+
+Origin: https://github.com/vim/vim/commit/adce965162dd89bf29ee0e5baf53652e7515762c
+---
+ src/tag.c | 9 ++++++++-
+ src/testdir/test_tagcase.vim | 12 ++++++++++++
+ 2 files changed, 20 insertions(+), 1 deletion(-)
+
+diff --git a/src/tag.c b/src/tag.c
+index b1915e1..4e96da3 100644
+--- a/src/tag.c
++++ b/src/tag.c
+@@ -146,6 +146,7 @@ do_tag(
+ int attr;
+ int use_tagstack;
+ int skip_msg = FALSE;
++ char_u *tofree = NULL;
+ char_u *buf_ffname = curbuf->b_ffname; /* name to use for
+ priority computation */
+
+@@ -486,7 +487,12 @@ do_tag(
+ * When desired match not found yet, try to find it (and others).
+ */
+ if (use_tagstack)
+- name = tagstack[tagstackidx].tagname;
++ {
++ // make a copy, the tagstack may change in 'tagfunc'
++ name = vim_strsave(tagstack[tagstackidx].tagname);
++ vim_free(tofree);
++ tofree = name;
++ }
+ #if defined(FEAT_QUICKFIX)
+ else if (g_do_tagpreview != 0)
+ name = ptag_entry.tagname;
+@@ -1078,6 +1084,7 @@ end_do_tag:
+ g_do_tagpreview = 0; /* don't do tag preview next time */
+ # endif
+
++ vim_free(tofree);
+ #ifdef FEAT_CSCOPE
+ return jumped_to_tag;
+ #else