CVE-2013-6400 · cross-distro fix matrix

CVE-2013-6400: Xen 4.2.x and 4.3.x, when using Intel VT-d and a PCI device has been assigned, does not clear the flag that suppresses IOMMU TLB flushes when unspecified errors occur, which causes the TLB entries to not be flushed and allows local guest administrators to cause a denial of service (host crash) or ga

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

Fix per ecosystem

Each block below is a distro release where CVE-2013-6400 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

xen→ fixed in4.4.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xen
```

Debian bookworm

Source: Debian Security Tracker

xen→ fixed in4.4.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xen
```

Debian trixie

Source: Debian Security Tracker

xen→ fixed in4.4.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xen
```

Are YOU affected by CVE-2013-6400?

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.

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