Mercurial > vim
view runtime/tutor/README.el.cp737.txt @ 33829:f0132690cdf9 v9.0.2129
patch 9.0.2129: [security]: use-after-free in call_dfunc()
Commit: https://github.com/vim/vim/commit/a555069b7d790abedc60edc505bd35bda257949d
Author: mityu <mityu.mail@gmail.com>
Date: Sat Nov 25 15:41:20 2023 +0100
patch 9.0.2129: [security]: use-after-free in call_dfunc()
Problem: [security]: use-after-free in call_dfunc()
Solution: Refresh dfunc pointer
closes: #13571
This Commit fixes a SEGV caused by a use-after-free bug in call_dfunc().
When calling check_ufunc_arg_types() from the call_dfunc() it may cause
def functions to be re-compiled and if there are too many def functions,
the def_functions array will be re-allocated. Which means, that the
dfunc pointer in call_dfunc() now starts pointing to freed memory.
So we need to reset the dfunc pointer after calling
check_ufunc_arg_types().
Let's also add a test, to ensure we do not regress.
Signed-off-by: mityu <mityu.mail@gmail.com>
Signed-off-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sat, 25 Nov 2023 16:00:03 +0100 |
| parents | 82b5078be2dd |
| children |
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Tutor 夘 "" 㚞 ⦬ 㩫 ᡫ Vim. 櫜 ⦠ 㩫 驦 櫜 騘. ⢜ 夘 櫠 嫜 ᤜ 嘪 ⤦ 餫 ᡫ Vim. Tutor 夘 ⤘ ⮜ 㣘 . 嫜 ⩜ "vim tutor" 㩜 圪 㣘. 㣘 礜 㩜 , . 穫 Unix 嫜 婞 㩜 暨 "vimtutor". 㩜 高 ⤘ 殜 嚨 tutor. 櫜 ਞ⤘ 㣘 嫞 椦. 驫 ⢘ 墜 㧦 驜 ᤜ. Bob Ware, Colorado School of Mines, Golden, Co 80401, USA (303) 273-3987 bware@mines.colorado.edu bware@slate.mines.colorado.edu bware@mines.bitnet [ 㟞 Vim Bram Moolenaar]