annotate src/typemap @ 33915:a49ae967e9ed
v9.0.2158
patch 9.0.2158: [security]: use-after-free in check_argument_type
Commit: https://github.com/vim/vim/commit/0f28791b215bd4c22ed580839409c2f7d39d8140
Author: Christian Brabandt <cb@256bit.org>
Date: Mon Dec 11 17:53:25 2023 +0100
patch 9.0.2158: [security]: use-after-free in check_argument_type
Problem: [security]: use-after-free in check_argument_type
Solution: Reset function type pointer when freeing the function type
list
function pointer fp->uf_func_type may point to the same memory, that was
allocated for fp->uf_type_list. However, when cleaning up a function
definition (e.g. because it was invalid), fp->uf_type_list will be
freed, but fp->uf_func_type may still point to the same (now) invalid
memory address.
So when freeing the fp->uf_type_list, check if fp->func_type points to
any of those types and if it does, reset the fp->uf_func_type pointer to
the t_func_any (default) type pointer
closes: #13652
Signed-off-by: Christian Brabandt <cb@256bit.org>
author |
Christian Brabandt <cb@256bit.org> |
date |
Mon, 11 Dec 2023 18:00:03 +0100 |
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dec4338a7da2 |
children |
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7
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1 TYPEMAP
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2 VIWIN T_VIOBJNOMUNGE
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3 VIBUF T_VIOBJNOMUNGE
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4
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5 INPUT
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6 T_VIOBJNOMUNGE
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7 if (sv_isa($arg, \"${ntype}\")) {
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8 IV tmp = SvIV((SV*)SvRV($arg));
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3344
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9 $var = INT2PTR($type, tmp);
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7
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10 if (!tmp)
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11 croak(\"$ntype no longer exists\");
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12 }
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13 else
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14 croak(\"$var is not of type ${ntype}\")
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