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SysFn 9 security fix: now apps cannot destroy kernel memory via passing illegal address in ebx

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Update docs on SysFn 9

git-svn-id: svn://kolibrios.org@8246 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Rustem Gimadutdinov (rgimad)
2020-11-23 18:52:56 +00:00
parent a75d4696ea
commit 5d4528238c
3 changed files with 18 additions and 0 deletions
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3
kernel/trunk/docs/sysfuncs.txt
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@@ -283,6 +283,9 @@ Parameters:
ecx = -1 - get information on the current thread
Returned value:
* eax = maximum number of the slot of a thread
but if pointer in ebx is illegal, for example,
[ebx, ebx + 0x4C) region intersects with kernel memory,
then function returns -1
* buffer pointed to by ebx contains the following information:
* +0: dword: usage of the processor (how many time units
per second leaves on execution of this thread)