Headline
CVE-2022-1735: patch 8.2.4969: changing text in Visual mode may cause invalid memory… · vim/vim@7ce5b2b
Classic Buffer Overflow in GitHub repository vim/vim prior to 8.2.4969.
@@ -622,6 +622,31 @@ check_cursor(void) check_cursor_col(); }
/* * Check if VIsual position is valid, correct it if not. * Can be called when in Visual mode and a change has been made. */ void check_visual_pos(void) { if (VIsual.lnum > curbuf->b_ml.ml_line_count) { VIsual.lnum = curbuf->b_ml.ml_line_count; VIsual.col = 0; VIsual.coladd = 0; } else { int len = (int)STRLEN(ml_get(VIsual.lnum));
if (VIsual.col > len) { VIsual.col = len; VIsual.coladd = 0; } } }
#if defined(FEAT_TEXTOBJ) || defined(PROTO) /* * Make sure curwin->w_cursor is not on the NUL at the end of the line. @@ -2416,7 +2441,7 @@ get_user_name(char_u *buf, int len) return OK; }
#if defined(EXITFREE) || defined(PROTOS) #if defined(EXITFREE) || defined(PROTO) /* * Free the memory allocated by get_user_name() */
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