[GH-ISSUE #459] Buffer overflow when receiving multiple packets of 1-3 bytes #241

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opened 2026-02-27 15:49:31 +03:00 by kerem · 2 comments

kerem commented

2026-02-27 15:49:31 +03:00

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Originally created by @Netskyes on GitHub (May 20, 2016).
Original GitHub issue: https://github.com/quasar/Quasar/issues/459

Originally assigned to: @MaxXor on GitHub.

Hi, so the issue occurs when client is processing packets and the readableDataLen is less than HEADER_SIZE, then it resets readableDataLen to 0 and gets ready to process new packet.

If the new packet size is also less than HEADER_SIZE, it will keep writing to _tempHeader and eventually (in case where a few packets size is less than HEADER_SIZE) cause buffer overflow.

Originally created by @Netskyes on GitHub (May 20, 2016). Original GitHub issue: https://github.com/quasar/Quasar/issues/459 Originally assigned to: @MaxXor on GitHub. Hi, so the issue occurs when client is processing packets and the readableDataLen is less than HEADER_SIZE, then it resets readableDataLen to 0 and gets ready to process new packet. If the new packet size is also less than HEADER_SIZE, it will keep writing to _tempHeader and eventually (in case where a few packets size is less than HEADER_SIZE) cause buffer overflow.

kerem

2026-02-27 15:49:31 +03:00

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kerem commented

2026-02-27 15:49:32 +03:00

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@MaxXor commented on GitHub (May 20, 2016):

This usually doesn't happen often in normal program operation. But I'll take a look into it to fix it.

@MaxXor commented on GitHub (May 20, 2016): This usually doesn't happen often in normal program operation. But I'll take a look into it to fix it.

kerem commented

2026-02-27 15:49:32 +03:00

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@Netskyes commented on GitHub (May 20, 2016):

I agree, but it still can happen so thought to let you know :)

@Netskyes commented on GitHub (May 20, 2016): I agree, but it still can happen so thought to let you know :)

kerem referenced this issue

2026-02-27 15:52:58 +03:00

[PR #241] [MERGED] Documentation additions for Client/Server objects #1061