Avast MELTDOWN BUG: ShellExecuteEx failed with error code 299

[Aditza]

i think this might be related to the Meltdown mitigation changes in memory management in windows...

When trying to install newly released updates for some software i get the message:
ShellExecuteEx failed; code 299. Only part of a ReadProcessMemory or WriteProcessMemory request was completed

while Avast is intercepting and scanning the process.
(screenshots in attachment)

the executable is https://www.virustotal.com/en/file/0a0d5c87983612154088014eb9bca92698355457c506aff3afa2ca9fc6afb3d2/analysis/

[Asyn]

You can report a suspected FP (File/Website) here: https://www.avast.com/false-positive-file-form.php

[Aditza]

You can report a suspected FP (File/Website) here: https://www.avast.com/false-positive-file-form.php

it's not really a false positive.. after Avast finishes with whatever it's doing, it reports no problems found and re-starts the executable.

[Asyn]

Report it anyway, so the guys from VL can have a look at it.

[Aditza]

ok, reported it.

i also included a link to this thread in that description.

[Asyn]

OK, good job.