Linux 5.10.y / ipc: replace costly bailout check in sysvipc_find_ipc()

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Subject: Linux 5.10.y / ipc: replace costly bailout check in sysvipc_find_ipc()
From: Marek Vasut <marex@xxxxxxx>
Date: Thu, 12 Oct 2023 01:13:07 +0200
Cc: Rafael Aquini <aquini@xxxxxxxxxx>, Davidlohr Bueso <dbueso@xxxxxxx>, Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>, Waiman Long <llong@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
User-agent: Mozilla Thunderbird

Please backport to Linux 5.10.y :

20401d1058f3f841f35a594ac2fc1293710e55b9
ipc: replace costly bailout check in sysvipc_find_ipc()

This should address CVE-2021-3669
https://nvd.nist.gov/vuln/detail/CVE-2021-3669

Thank you

Follow-Ups:
- [PATCH 5.10.y] ipc: replace costly bailout check in sysvipc_find_ipc()
  - From: Rafael Aquini

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