CVE-2022-1968

Vim is an advanced text editor that seeks to provide the power of the de-facto Unix editor 'Vi', with a more complete feature set. Vim is a highly configurable text editor built to enable efficient text editing. It is an improved version of the vi editor distributed with most UNIX systems.

Security Fix(es):

Out-of-bounds Read in GitHub repository vim/vim prior to 8.2.(CVE-2022-1851)

Use After Free in GitHub repository vim/vim prior to 8.2.(CVE-2022-1898)

Heap-based Buffer Overflow in GitHub repository vim/vim prior to 8.2.(CVE-2022-1942)

Out-of-bounds Write in GitHub repository vim/vim prior to 8.2.(CVE-2022-1897)

Use After Free in GitHub repository vim/vim prior to 8.2.(CVE-2022-1968)

Uncontrolled Recursion in GitHub repository vim/vim prior to 8.2.4975.(CVE-2022-1771)

Use After Free in GitHub repository vim/vim prior to 8.2.

• CVE-2021-3928: in suggest_trie_walk() only credit a non-word-char boundary with SCORE_NONWORD when preword is non-empty, so spell suggestions do not read uninitialized memory behind preword.
• CVE-2021-3974: in nfa_regmatch() NFA_MARK / NFA_MARK_GT / NFA_MARK_LT, save reginput - regline and re-fetch regline via reg_getline() after getmark_buf() so use-after-free cannot occur when getmark_buf flushes the current line.
• CVE-2022-0368: call check_pos(curbuf, &VIsual) at the end of u_undo_end() when Visual mode is active, so an undo that shortens the buffer cannot leave VIsual pointing past end-of-line / end- of-buffer. Adds a check_pos() helper in misc2.c.
• CVE-2022-0696: in win_new_tabpage() and goto_tabpage_tp(), refuse to switch/create a tabpage while cmdwin_type != 0, emitting e_cmdwin instead of crashing on cmdline-window re-entry.
• CVE-2022-1629: in find_next_quote(), after advancing past an escape character return -1 if the next byte is NUL so a trailing backslash cannot be read past end-of-line.
• CVE-2022-1735: call new check_visual_pos() helper from changed_common() (misc1.c) and stop_insert() (edit.c) whenever Visual mode is active so a change that shrinks the buffer cannot leave VIsual pointing past end-of-line / end-of-buffer.
• CVE-2022-1771: cap getcmdline() recursion at 50 via a static depth counter, emitting E169 "Command too recursive" on overflow to prevent crash from self-recursive cmdline input (e.g. the "=@" register loop).
• CVE-2022-1898: in nv_brackets(), copy the identifier under the cursor with vim_strnsave() before calling find_pattern_in_path() for "]d"/"[d", so that a match in a modified/freed line cannot cause a use-after-free on ptr.
• CVE-2022-1968: add get_line_and_copy() helper in search.c and use it instead of ml_get() in find_pattern_in_path(), so the regexp cannot leave line pointing into freed buffer memory when a mark invalidates the current line.
• CVE-2022-2124: in current_quote() (search.c), break out of the selection-scan loop when line[i] is NUL so a changed line does not cause a read past end-of-line while iterating up to col_end.

• CVE-2021-3928: in suggest_trie_walk() only credit a non-word-char boundary with SCORE_NONWORD when preword is non-empty, so spell suggestions do not read uninitialized memory behind preword.
• CVE-2021-3974: in nfa_regmatch() NFA_MARK / NFA_MARK_GT / NFA_MARK_LT, save reginput - regline and re-fetch regline via reg_getline() after getmark_buf() so use-after-free cannot occur when getmark_buf flushes the current line.
• CVE-2022-0368: call check_pos(curbuf, &VIsual) at the end of u_undo_end() when Visual mode is active, so an undo that shortens the buffer cannot leave VIsual pointing past end-of-line / end- of-buffer. Adds a check_pos() helper in misc2.c.
• CVE-2022-0696: in win_new_tabpage() and goto_tabpage_tp(), refuse to switch/create a tabpage while cmdwin_type != 0, emitting e_cmdwin instead of crashing on cmdline-window re-entry.
• CVE-2022-1629: in find_next_quote(), after advancing past an escape character return -1 if the next byte is NUL so a trailing backslash cannot be read past end-of-line.
• CVE-2022-1735: call new check_visual_pos() helper from changed_common() (misc1.c) and stop_insert() (edit.c) whenever Visual mode is active so a change that shrinks the buffer cannot leave VIsual pointing past end-of-line / end-of-buffer.
• CVE-2022-1771: cap getcmdline() recursion at 50 via a static depth counter, emitting E169 "Command too recursive" on overflow to prevent crash from self-recursive cmdline input (e.g. the "=@" register loop).
• CVE-2022-1898: in nv_brackets(), copy the identifier under the cursor with vim_strnsave() before calling find_pattern_in_path() for "]d"/"[d", so that a match in a modified/freed line cannot cause a use-after-free on ptr.
• CVE-2022-1968: add get_line_and_copy() helper in search.c and use it instead of ml_get() in find_pattern_in_path(), so the regexp cannot leave line pointing into freed buffer memory when a mark invalidates the current line.
• CVE-2022-2124: in current_quote() (search.c), break out of the selection-scan loop when line[i] is NUL so a changed line does not cause a read past end-of-line while iterating up to col_end.

• CVE-2021-4069: copy ml_get_curline() in ex_open() so a flushed line buffer is not used after vim_regexec()
• CVE-2022-2000: truncate IObuff with "..." in append_command() when remaining space is below threshold
• CVE-2022-3099: guard do_cmdline() breakpoint lookup with lines_ga.ga_len > current_line check
• CVE-2022-1968: introduce get_line_and_copy() in find_pattern_in_path() so mark-based regex cannot invalidate the line
• CVE-2022-0443: cache buf_valid() in set_curbuf() and fall back to lastbuf when buffer was wiped out
• CVE-2022-1735: add check_visual_pos() and call it after every change/stop_insert so VIsual mark is clamped

• CVE-2021-4069: copy ml_get_curline() in ex_open() so a flushed line buffer is not used after vim_regexec()
• CVE-2022-2000: truncate IObuff with "..." in append_command() when remaining space is below threshold
• CVE-2022-3099: guard do_cmdline() breakpoint lookup with lines_ga.ga_len > current_line check
• CVE-2022-1968: introduce get_line_and_copy() in find_pattern_in_path() so mark-based regex cannot invalidate the line
• CVE-2022-0443: cache buf_valid() in set_curbuf() and fall back to lastbuf when buffer was wiped out
• CVE-2022-1735: add check_visual_pos() and call it after every change/stop_insert so VIsual mark is clamped

These are all security issues fixed in the gvim-9.0.0453-2.1 package on the GA media of openSUSE Tumbleweed.

This update for vim fixes the following issues:

Updated to version 9.0 with patch level 0313:

• CVE-2022-2183: Fixed out-of-bounds read through get_lisp_indent() (bsc#1200902).
• CVE-2022-2182: Fixed heap-based buffer overflow through parse_cmd_address() (bsc#1200903).
• CVE-2022-2175: Fixed buffer over-read through cmdline_insert_reg() (bsc#1200904).
• CVE-2022-2304: Fixed stack buffer overflow in spell_dump_compl() (bsc#1201249).
• CVE-2022-2343: Fixed heap-based buffer overflow in GitHub repository vim prior to 9.0.0044 (bsc#1201356).
• CVE-2022-2344: Fixed another heap-based buffer overflow vim prior to 9.0.0045 (bsc#1201359).
• CVE-2022-2345: Fixed use after free in GitHub repository vim prior to 9.0.0046. (bsc#1201363).
• CVE-2022-2819: Fixed heap-based Buffer Overflow in compile_lock_unlock() (bsc#1202414).
• CVE-2022-2874: Fixed NULL Pointer Dereference in generate_loadvar() (bsc#1202552).
• CVE-2022-1968: Fixed use after free in utf_ptr2char (bsc#1200270).
• CVE-2022-2124: Fixed out of bounds read in current_quote() (bsc#1200697).
• CVE-2022-2125: Fixed out of bounds read in get_lisp_indent() (bsc#1200698).
• CVE-2022-2126: Fixed out of bounds read in suggest_trie_walk() (bsc#1200700).
• CVE-2022-2129: Fixed out of bounds write in vim_regsub_both() (bsc#1200701).
• CVE-2022-1720: Fixed out of bounds read in grab_file_name() (bsc#1200732).
• CVE-2022-2264: Fixed out of bounds read in inc() (bsc#1201132).
• CVE-2022-2284: Fixed out of bounds read in utfc_ptr2len() (bsc#1201133).
• CVE-2022-2285: Fixed negative size passed to memmove() due to integer overflow (bsc#1201134).
• CVE-2022-2286: Fixed out of bounds read in ins_bytes() (bsc#1201135).
• CVE-2022-2287: Fixed out of bounds read in suggest_trie_walk() (bsc#1201136).
• CVE-2022-2231: Fixed null pointer dereference skipwhite() (bsc#1201150).
• CVE-2022-2210: Fixed out of bounds read in ml_append_int() (bsc#1201151).
• CVE-2022-2208: Fixed null pointer dereference in diff_check() (bsc#1201152).
• CVE-2022-2207: Fixed out of bounds read in ins_bs() (bsc#1201153).
• CVE-2022-2257: Fixed out of bounds read in msg_outtrans_special() (bsc#1201154).
• CVE-2022-2206: Fixed out of bounds read in msg_outtrans_attr() (bsc#1201155).
• CVE-2022-2522: Fixed out of bounds read via nested autocommand (bsc#1201863).
• CVE-2022-2571: Fixed heap-based buffer overflow related to ins_comp_get_next_word_or_line() (bsc#1202046).
• CVE-2022-2580: Fixed heap-based buffer overflow related to eval_string() (bsc#1202049).
• CVE-2022-2581: Fixed out-of-bounds read related to cstrchr() (bsc#1202050).
• CVE-2022-2598: Fixed undefined behavior for Input to API related to diff_mark_adjust_tp() and ex_diffgetput() (bsc#1202051).
• CVE-2022-2817: Fixed use after gree in f_assert_fails() (bsc#1202420).
• CVE-2022-2816: Fixed out-of-bounds Read in check_vim9_unlet() (bsc#1202421).
• CVE-2022-2862: Fixed use-after-free in compile_nested_function() (bsc#1202511).
• CVE-2022-2849: Fixed invalid memory access related to mb_ptr2len() (bsc#1202512).
• CVE-2022-2845: Fixed buffer Over-read related to display_dollar() (bsc#1202515).
• CVE-2022-2889: Fixed use-after-free in find_var_also_in_script() in evalvars.c (bsc#1202599).
• CVE-2022-2923: Fixed NULL pointer dereference in GitHub repository vim/vim prior to 9.0.0240 (bsc#1202687).
• CVE-2022-2946: Fixed use after free in function vim_vsnprintf_typval (bsc#1202689).
• CVE-2022-3016: Fixed use after free in vim prior to 9.0.0285 (bsc#1202862).

Bugfixes:

• Fixing vim error on startup (bsc#1200884).
• Fixing vim SUSE Linux Enterprise Server 15 SP4 Basesystem plugin-tlib issue (bsc#1201620).

This update for vim fixes the following issues:

Updated to version 9.0.0814:

• Fixing bsc#1192478 VUL-1: CVE-2021-3928: vim: vim is vulnerable to Stack-based Buffer Overflow
• Fixing bsc#1203508 VUL-0: CVE-2022-3234: vim: Heap-based Buffer Overflow prior to 9.0.0483.
• Fixing bsc#1203509 VUL-1: CVE-2022-3235: vim: Use After Free in GitHub prior to 9.0.0490.
• Fixing bsc#1203820 VUL-0: CVE-2022-3324: vim: Stack-based Buffer Overflow in prior to 9.0.0598.
• Fixing bsc#1204779 VUL-0: CVE-2022-3705: vim: use after free in function qf_update_buffer of the file quickfix.c
• Fixing bsc#1203152 VUL-1: CVE-2022-2982: vim: use after free in qf_fill_buffer()
• Fixing bsc#1203796 VUL-1: CVE-2022-3296: vim: stack out of bounds read in ex_finally() in ex_eval.c
• Fixing bsc#1203797 VUL-1: CVE-2022-3297: vim: use-after-free in process_next_cpt_value() at insexpand.c
• Fixing bsc#1203110 VUL-1: CVE-2022-3099: vim: Use After Free in ex_docmd.c
• Fixing bsc#1203194 VUL-1: CVE-2022-3134: vim: use after free in do_tag()
• Fixing bsc#1203272 VUL-1: CVE-2022-3153: vim: NULL Pointer Dereference in GitHub repository vim/vim prior to 9.0.0404.
• Fixing bsc#1203799 VUL-1: CVE-2022-3278: vim: NULL pointer dereference in eval_next_non_blank() in eval.c
• Fixing bsc#1203924 VUL-1: CVE-2022-3352: vim: vim: use after free
• Fixing bsc#1203155 VUL-1: CVE-2022-2980: vim: null pointer dereference in do_mouse()
• Fixing bsc#1202962 VUL-1: CVE-2022-3037: vim: Use After Free in vim prior to 9.0.0321
• Fixing bsc#1200884 Vim: Error on startup
• Fixing bsc#1200902 VUL-0: CVE-2022-2183: vim: Out-of-bounds Read through get_lisp_indent() Mon 13:32
• Fixing bsc#1200903 VUL-0: CVE-2022-2182: vim: Heap-based Buffer Overflow through parse_cmd_address() Tue 08:37
• Fixing bsc#1200904 VUL-0: CVE-2022-2175: vim: Buffer Over-read through cmdline_insert_reg() Tue 08:37
• Fixing bsc#1201249 VUL-0: CVE-2022-2304: vim: stack buffer overflow in spell_dump_compl()
• Fixing bsc#1201356 VUL-1: CVE-2022-2343: vim: Heap-based Buffer Overflow in GitHub repository vim prior to 9.0.0044
• Fixing bsc#1201359 VUL-1: CVE-2022-2344: vim: Another Heap-based Buffer Overflow vim prior to 9.0.0045
• Fixing bsc#1201363 VUL-1: CVE-2022-2345: vim: Use After Free in GitHub repository vim prior to 9.0.0046.
• Fixing bsc#1201620 vim: SLE-15-SP4-Full-x86_64-GM-Media1 and vim-plugin-tlib-1.27-bp154.2.18.noarch issue
• Fixing bsc#1202414 VUL-1: CVE-2022-2819: vim: Heap-based Buffer Overflow in compile_lock_unlock()
• Fixing bsc#1202552 VUL-1: CVE-2022-2874: vim: NULL Pointer Dereference in generate_loadvar()
• Fixing bsc#1200270 VUL-1: CVE-2022-1968: vim: use after free in utf_ptr2char
• Fixing bsc#1200697 VUL-1: CVE-2022-2124: vim: out of bounds read in current_quote()
• Fixing bsc#1200698 VUL-1: CVE-2022-2125: vim: out of bounds read in get_lisp_indent()
• Fixing bsc#1200700 VUL-1: CVE-2022-2126: vim: out of bounds read in suggest_trie_walk()
• Fixing bsc#1200701 VUL-1: CVE-2022-2129: vim: out of bounds write in vim_regsub_both()
• Fixing bsc#1200732 VUL-1: CVE-2022-1720: vim: out of bounds read in grab_file_name()
• Fixing bsc#1201132 VUL-1: CVE-2022-2264: vim: out of bounds read in inc()
• Fixing bsc#1201133 VUL-1: CVE-2022-2284: vim: out of bounds read in utfc_ptr2len()
• Fixing bsc#1201134 VUL-1: CVE-2022-2285: vim: negative size passed to memmove() due to integer overflow
• Fixing bsc#1201135 VUL-1: CVE-2022-2286: vim: out of bounds read in ins_bytes()
• Fixing bsc#1201136 VUL-1: CVE-2022-2287: vim: out of bounds read in suggest_trie_walk()
• Fixing bsc#1201150 VUL-1: CVE-2022-2231: vim: null pointer dereference skipwhite()
• Fixing bsc#1201151 VUL-1: CVE-2022-2210: vim: out of bounds read in ml_append_int()
• Fixing bsc#1201152 VUL-1: CVE-2022-2208: vim: null pointer dereference in diff_check()
• Fixing bsc#1201153 VUL-1: CVE-2022-2207: vim: out of bounds read in ins_bs()
• Fixing bsc#1201154 VUL-1:…

It was discovered that Vim incorrectly handled memory access. An attacker could potentially use this issue to cause the program to crash, use unexpected values, or execute arbitrary code. (CVE-2022-1968)

It was discovered that Vim incorrectly handled memory access. An attacker could potentially use this issue to cause the corruption of sensitive information, a crash, or arbitrary code execution. (CVE-2022-1897, CVE-2022-1942)

It was discovered that Vim incorrectly handled memory when opening certain files. If an attacker could trick a user into opening a specially crafted file, it could cause Vim to crash, or possible execute arbitrary code. This issue only affected Ubuntu 14.04 ESM, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2022-0413, CVE-2022-1629, CVE-2022-1674, CVE-2022-1733, CVE-2022-1735, CVE-2022-1785, CVE-2022-1796, CVE-2022-1851, CVE-2022-1898, CVE-2022-1942, CVE-2022-1968, CVE-2022-2124, CVE-2022-2125, CVE-2022-2126, CVE-2022-2129, CVE-2022-2175, CVE-2022-2183, CVE-2022-2206, CVE-2022-2304, CVE-2022-2345, CVE-2022-2581)

It was discovered that Vim incorrectly handled memory when opening certain files. If an attacker could trick a user into opening a specially crafted file, it could cause Vim to crash, or possible execute arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2022-1720, CVE-2022-2571, CVE-2022-2845, CVE-2022-2849, CVE-2022-2923)

It was discovered that Vim incorrectly handled memory when opening certain files. If an attacker could trick a user into opening a specially crafted file, it could cause Vim to crash, or possible execute arbitrary code. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-1927, CVE-2022-2344)

It was discovered that Vim incorrectly handled memory when opening certain files. If an attacker could trick a user into opening a specially crafted file, it could cause Vim to crash, or possible execute arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 22.10. (CVE-2022-2946)

It was discovered that Vim incorrectly handled memory when opening certain files. If an attacker could trick a user into opening a specially crafted file, it could cause Vim to crash, or possible execute arbitrary code. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 22.10. (CVE-2022-2980)