patch 9.1.0404: [security] xxd: buffer-overflow with specific flags Commit: https://github.com/vim/vim/commit/67797191e039196128c69ba1538ccaf2a4711323 Author: Lennard Hofmann <lennard.hofmann@web.de> Date: Fri May 10 14:17:26 2024 +0200 patch 9.1.0404: [security] xxd: buffer-overflow with specific flags Problem: [security] xxd: buffer-overflow with specific flags Solution: Correctly calculate the required buffer space (Lennard Hofmann) xxd writes each output line into a global buffer before printing. The maximum size of that buffer was not calculated correctly. This command was crashing in AddressSanitizer: $ xxd -Ralways -g1 -c256 -d -o 9223372036854775808 /etc/passwd This prints a line of 6680 bytes but the buffer only had room for 6549 bytes. If the output from "-b" was colored, the line could be even longer. closes: #14738 Co-authored-by: K.Takata <kentkt@csc.jp> Signed-off-by: Lennard Hofmann <lennard.hofmann@web.de> Signed-off-by: Christian Brabandt <cb@256bit.org>

" Tests for using Ctrl-A/Ctrl-X using DBCS.

set encoding=cp932
scriptencoding cp932

func SetUp()
  new
  set nrformats&
endfunc

func TearDown()
  bwipe!
endfunc

func Test_increment_dbcs_1()
  set nrformats+=alpha
  call setline(1, ["ŽR1"])
  exec "norm! 0\<C-A>"
  call assert_equal(["ŽR2"], getline(1, '$'))
  call assert_equal([0, 1, 3, 0], getpos('.'))

  call setline(1, ["‚`‚a‚b0xDE‚e"])
  exec "norm! 0\<C-X>"
  call assert_equal(["‚`‚a‚b0xDD‚e"], getline(1, '$'))
  call assert_equal([0, 1, 10, 0], getpos('.'))
endfunc

" vim: shiftwidth=2 sts=2 expandtab