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Hash: SHA512
Format: 1.8
Date: Fri, 15 Aug 2025 23:27:17 +0300
Source: qemu
Architecture: source
Version: 1:7.2+dfsg-7+deb12u15
Distribution: bookworm-security
Urgency: medium
Maintainer: Debian QEMU Team <pkg-qemu-devel@lists.alioth.debian.org>
Changed-By: Michael Tokarev <mjt@tls.msk.ru>
Changes:
qemu (1:7.2+dfsg-7+deb12u15) bookworm-security; urgency=medium
.
* d/binfmt-install: stop using C (Credentials) flag for binfmt_misc
registration. qemu-user binaries were never meant to be used in
suid/sgid scenarios, but was used in debian since late 2009. Any
foreign suid/sgid binary accessible to the users, in presence of
qemu-user binfmt, is trivially exploitable to gain elevated privileges.
This change might break existing setups since for many years people
relied on qemu-user binfmt working with suid binaries, but this is
a situation where it is definitely better be safe than sorry.
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