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x11vnc
x11vnc-fix-buffer-overflow-in-snapshot_stack_li...
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File x11vnc-fix-buffer-overflow-in-snapshot_stack_list.patch of Package x11vnc
From c79be20b5a150ae4888a5e4a21145646360b1cdd Mon Sep 17 00:00:00 2001 From: Michal Srb <michalsrb@gmail.com> Date: Mon, 4 Jul 2016 16:45:01 +0300 Subject: [PATCH] Fix buffer overflow in snapshot_stack_list. diff --git a/src/win_utils.c b/src/win_utils.c index 45f70d4..2b9803f 100644 --- a/x11vnc/win_utils.c +++ b/x11vnc/win_utils.c @@ -248,8 +248,8 @@ void snapshot_stack_list(int free_only, double allowed_age) { } last_snap = now; - if (num > stack_list_len + blackouts) { - int n = 2*num; + if (num + blackouts > stack_list_len) { + int n = 2 * (num + blackouts); free(stack_list); stack_list = (winattr_t *) malloc(n*sizeof(winattr_t)); stack_list_len = n;
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