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CVE-2019-19921 · cross-distro fix matrix

CVE-2019-19921: runc through 1.0.0-rc9 has Incorrect Access Control leading to Escalation of Privileges, related to libcontainer/rootfs_linux.go. To exploit this, an attacker must be able to spawn two containers with custom volume-mount configurations, and be able to run custom images. (This vulnerability does not

Affects 8 Linux releases across 13 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2019-19921 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

runc→ fixed in1.0.0~rc10+dfsg1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y runc
```

Debian bookworm

Source: Debian Security Tracker

runc→ fixed in1.0.0~rc10+dfsg1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y runc
```

Debian trixie

Source: Debian Security Tracker

runc→ fixed in1.0.0~rc10+dfsg1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y runc
```

Alpine v3.20

Source: Alpine secdb

containerd→ fixed in1.3.3-r0

apk update && apk add --upgrade containerd

runc→ fixed in1.0.0_rc10-r0
```
apk update && apk add --upgrade runc
```

Alpine v3.21

Source: Alpine secdb

containerd→ fixed in1.3.3-r0

apk update && apk add --upgrade containerd

runc→ fixed in1.0.0_rc10-r0
```
apk update && apk add --upgrade runc
```

Alpine edge

Source: Alpine secdb

containerd→ fixed in1.3.3-r0

apk update && apk add --upgrade containerd

runc→ fixed in1.0.0_rc10-r0
```
apk update && apk add --upgrade runc
```

Alpine v3.18

Source: Alpine secdb

containerd→ fixed in1.3.3-r0

apk update && apk add --upgrade containerd

runc→ fixed in1.0.0_rc10-r0
```
apk update && apk add --upgrade runc
```

Alpine v3.19

Source: Alpine secdb

containerd→ fixed in1.3.3-r0

apk update && apk add --upgrade containerd

runc→ fixed in1.0.0_rc10-r0
```
apk update && apk add --upgrade runc
```

Are YOU affected by CVE-2019-19921?

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

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

CVE-2019-19921dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.

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