diff options
| -rw-r--r-- | src/nvim/buffer.c | 4 | ||||
| -rw-r--r-- | src/nvim/testdir/test_visual.vim | 21 |
2 files changed, 25 insertions, 0 deletions
diff --git a/src/nvim/buffer.c b/src/nvim/buffer.c index 98832a98c9..7a4e5d3eeb 100644 --- a/src/nvim/buffer.c +++ b/src/nvim/buffer.c @@ -3600,6 +3600,10 @@ void ex_buffer_all(exarg_T *eap) all = true; } + // Stop Visual mode, the cursor and "VIsual" may very well be invalid after + // switching to another buffer. + reset_VIsual_and_resel(); + setpcmark(); // Close superfluous windows (two windows for the same buffer). diff --git a/src/nvim/testdir/test_visual.vim b/src/nvim/testdir/test_visual.vim index 1e9629c2c4..350c69fe4e 100644 --- a/src/nvim/testdir/test_visual.vim +++ b/src/nvim/testdir/test_visual.vim @@ -1536,4 +1536,25 @@ func Test_switch_buffer_ends_visual_mode() exe 'bwipe!' buf2 endfunc +" Check fix for the heap-based buffer overflow bug found in the function +" utfc_ptr2len and reported at +" https://huntr.dev/bounties/ae933869-a1ec-402a-bbea-d51764c6618e +func Test_heap_buffer_overflow() + enew + set updatecount=0 + + norm R0 + split other + norm R000 + exe "norm \<C-V>l" + ball + call assert_equal(getpos("."), getpos("v")) + call assert_equal('n', mode()) + norm zW + + %bwipe! + set updatecount& +endfunc + + " vim: shiftwidth=2 sts=2 expandtab |