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Date: Tue, 07 May 2024 11:10:14 +0200
From: Peter Korsgaard <>
To: "Yann E. MORIN" <>
Cc: Ben Hutchings <>,,
Subject: Re: Buildroot: incorrect permissons on /dev/shm

>>>>> "Yann" == Yann E MORIN <> writes:

 > Ben, All,
 > On 2024-05-06 12:24 +0200, Ben Hutchings via buildroot spake thusly:
 >> On Thu, Apr 11, 2024 at 05:31:02PM +0200, Ben Hutchings wrote:
 >> > Buildroot is a Linux distribution and system builder for embedded
 >> > systems.  Starting in Buildroot 2011.08, its default /etc/fstab
 >> > included an entry for /dev/shm with incorrect permissons (sticky bit
 >> > not set). (CWE-276)
 >> > 
 >> > Buildroot 2017.08 removed this entry for systems using systemd, and it
 >> > has never been included for systems using OpenRC.  So this only
 >> > affects Buildroot-built systems that use sysvinit, and some older
 >> > systems that use systemd.
 >> [...]
 >> This has been assigned CVE-2024-34455.

 > Thanks for th efeedback. The fix has already been committed, with commit
 > 0b2967e158 (package/skeleton-init-sysv: Set sticky bit on /dev/shm) that
 > I applied on 2024-04-11.

And it is included in the recently released 2024.02.2 rlease:

Bye, Peter Korsgaard

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