CVE-2015-2756 · cross-distro fix matrix

CVE-2015-2756: QEMU, as used in Xen 3.3.x through 4.5.x, does not properly restrict access to PCI command registers, which might allow local HVM guest users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessi

Affects 3 Linux releases across 6 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2015-2756 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

qemu→ fixed in1:2.3+dfsg-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y qemu
```
xen→ fixed in4.2.0~rc2-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xen
```

Debian bookworm

Source: Debian Security Tracker

qemu→ fixed in1:2.3+dfsg-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y qemu
```
xen→ fixed in4.2.0~rc2-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xen
```

Debian trixie

Source: Debian Security Tracker

qemu→ fixed in1:2.3+dfsg-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y qemu
```
xen→ fixed in4.2.0~rc2-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xen
```

Are YOU affected by CVE-2015-2756?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

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