CVE-2016-4480 · cross-distro fix matrix

CVE-2016-4480: The guest_walk_tables function in arch/x86/mm/guest_walk.c in Xen 4.6.x and earlier does not properly handle the Page Size (PS) page table entry bit at the L4 and L3 page table levels, which might allow local guest OS users to gain privileges via a crafted mapping of memory.

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

Fix per ecosystem

Each block below is a distro release where CVE-2016-4480 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

xen→ fixed in4.8.0~rc3-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xen
```

Debian bookworm

Source: Debian Security Tracker

xen→ fixed in4.8.0~rc3-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xen
```

Debian trixie

Source: Debian Security Tracker

xen→ fixed in4.8.0~rc3-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xen
```

Are YOU affected by CVE-2016-4480?

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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