[Buildroot] [PATCH] package/bubblewrap: security bump to version 0.12.0

[Adrian Perez de Castro]

Hello Peter,

On Fri, 11 Sep 2026 15:32:48 +0200 Peter Korsgaard <peter at korsgaard.com> wrote:
> >>>>> "Adrian" == Adrian Perez de Castro <aperez at igalia.com> writes:
> 
>  > Fixes a sandbox escape through symlink traversal tracked in
>  > CVE-2026-87766, which affects all previous versions.
> 
>  > Using the bwrap binary with the setuid bit set is no longer supported
>  > and user namespaces are now always required, so a kernel config fixup
>  > is applied.
> 
>  > A new build option allows indicating the minimum kernel version that
>  > will be used, which removes code used for backwards compatibility with
>  > kernels older than 5.6.0 when a newer version is specified. Passing
>  > $(LINUX_VERSION_PROBED) seems reasonable here.
> 
>  > This version also changed the license from LGPL-2.0+ to LGPL-2.1+,
>  > hence the updated hash.
> 
>  > Release notes:
> 
>  >   https://github.com/containers/bubblewrap/releases/tag/v0.12.0
> 
>  > Signed-off-by: Adrian Perez de Castro <aperez at igalia.com>
>  > ---
>  >  package/bubblewrap/bubblewrap.hash |  6 +++---
>  >  package/bubblewrap/bubblewrap.mk   | 17 +++++++----------
>  >  2 files changed, 10 insertions(+), 13 deletions(-)
> 
>  > diff --git a/package/bubblewrap/bubblewrap.hash b/package/bubblewrap/bubblewrap.hash
>  > index e87d3c81cb..e150e1495d 100644
>  > --- a/package/bubblewrap/bubblewrap.hash
>  > +++ b/package/bubblewrap/bubblewrap.hash
>  > @@ -1,5 +1,5 @@
>  > -# From https://github.com/containers/bubblewrap/releases/download/v0.11.2/bubblewrap-0.11.2.tar.xz.sha256sum
>  > -sha256  69abc30005d2186baf7737feacd8da35633b93cf5af38838ecff17c5f8e924f6  bubblewrap-0.11.2.tar.xz
>  > +# From https://github.com/containers/bubblewrap/releases/download/v0.12.0/bubblewrap-0.12.0.tar.xz.sha256sum
>  > +sha256  9760d007363e3abba7c747489910f9f82d9fca53ba3bd3282e396fa3c97a3314  bubblewrap-0.12.0.tar.xz
>  
>  >  # Hash for license files:
>  > -sha256  b7993225104d90ddd8024fd838faf300bea5e83d91203eab98e29512acebd69c  COPYING
>  > +sha256  dc626520dcd53a22f727af3ee42c770e56c97a64fe3adb063799d8ab032fe551  COPYING
>  > diff --git a/package/bubblewrap/bubblewrap.mk b/package/bubblewrap/bubblewrap.mk
>  > index 7838ab90b3..40a8148e14 100644
>  > --- a/package/bubblewrap/bubblewrap.mk
>  > +++ b/package/bubblewrap/bubblewrap.mk
>  > @@ -4,21 +4,24 @@
>  >  #
>  >  ################################################################################
>  
>  > -BUBBLEWRAP_VERSION = 0.11.2
>  > +BUBBLEWRAP_VERSION = 0.12.0
>  >  BUBBLEWRAP_SITE = https://github.com/containers/bubblewrap/releases/download/v$(BUBBLEWRAP_VERSION)
>  >  BUBBLEWRAP_SOURCE = bubblewrap-$(BUBBLEWRAP_VERSION).tar.xz
>  >  BUBBLEWRAP_DEPENDENCIES = host-pkgconf libcap
>  
>  > -BUBBLEWRAP_LICENSE = LGPL-2.0+
>  > +BUBBLEWRAP_LICENSE = LGPL-2.1+
>  >  BUBBLEWRAP_LICENSE_FILES = COPYING
>  >  BUBBLEWRAP_CPE_ID_VENDOR = projectatomic
>  
>  > +define BUBBLEWRAP_CONFIG_FIXUPS
>  > +	$(call KCONFIG_ENABLE_OPT,CONFIG_USER_NS)
>  > +endef
>  > +
>  >  BUBBLEWRAP_CONF_OPTS = \
>  > +	-Dassume_kernel=$(LINUX_VERSION_PROBED) \
> 
> What happens if the config does not build a Linux kernel (then this
> presumably expands to -Dassume_kernel=)?

Exactly, and the empty value is the default as well for the option. In
that case the fallback code for older kernel versions is enabled for the
Bubblewrap build. IMO that is the right thing to do because we cannot
guess which kernel version will be used at runtime.
 
Cheers,
—Adrián
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