Home / mailings [SECURITY] [DSA 5983-1] qemu security update
Posted on 22 August 2025
Debian Security Advisory- -------------------------------------------------------------------------
Debian Security Advisory DSA-5983-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
August 22, 2025 https://www.debian.org/security/faq
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Package : qemu
CVE ID : CVE-2025-54566 CVE-2025-54567
This update removes the usage of the C (Credential) flag for the
binfmt_misc registration within the qemu-user package, as it allowed for
privilege escalation when running a suid/sgid binary under qemu-user.
This means suid/sgid foreign-architecture binaries are not running with
elevated privileges under qemu-user anymore. If you relied on this
behavior of qemu-user in the past (running suid/sgid foreign-arch
binaries), this will require changes to your deployment.
In Bookworm the affected packages are qemu-user-static (and
qemu-user-binfmt) instead of qemu-user.
Additionally, two security issues were fixed the in SR-IOV support
of QEMU system emulation.
For the oldstable distribution (bookworm), these problems have been fixed
in version 1:7.2+dfsg-7+deb12u15.
For the stable distribution (trixie), these problems have been fixed in
version 1:10.0.2+ds-2+deb13u1.
We recommend that you upgrade your qemu packages.
For the detailed security status of qemu please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/qemu
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
