annotate runtime/compiler/xmlwf.vim @ 33879:d418c82f02a4
v9.0.2149
patch 9.0.2149: [security]: use-after-free in exec_instructions()
Commit: https://github.com/vim/vim/commit/5dd41d4b6370b7b7d09d691f9252b3899c66102a
Author: Christian Brabandt <cb@256bit.org>
Date: Mon Dec 4 22:52:23 2023 +0100
patch 9.0.2149: [security]: use-after-free in exec_instructions()
Problem: [security]: use-after-free in exec_instructions()
Solution: get tv pointer again
[security]: use-after-free in exec_instructions()
exec_instructions may access freed memory, if the GA_GROWS_FAILS()
re-allocates memory. When this happens, the typval tv may still point to
now already freed memory. So let's get that pointer again and compare it
with tv. If those two pointers differ, tv is now invalid and we have to
refresh the tv pointer.
closes: #13621
Signed-off-by: Christian Brabandt <cb@256bit.org>
| author |
Christian Brabandt <cb@256bit.org> |
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Sun, 10 Dec 2023 15:16:17 +0100 |
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2704c4e3e20a |
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e1df51f68736 |
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line source |
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7
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1 " Vim Compiler File
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2 " Compiler: xmlwf
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3 " Maintainer: Robert Rowsome <rowsome@wam.umd.edu>
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17571
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4 " Last Change: 2019 Jul 23
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7
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5
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6 if exists("current_compiler")
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7 finish
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8 endif
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9 let current_compiler = "xmlwf"
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10
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11 let s:cpo_save = &cpo
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12 set cpo&vim
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13
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14 if exists(":CompilerSet") != 2 " older Vim always used :setlocal
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15 command -nargs=* CompilerSet setlocal <args>
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16 endif
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17
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17571
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18 CompilerSet makeprg=xmlwf\ %:S
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7
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19
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20 CompilerSet errorformat=%f:%l%c:%m
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21
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22 let &cpo = s:cpo_save
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23 unlet s:cpo_save
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