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CVE-2022-2309 · cross-distro fix matrix

CVE-2022-2309: NULL Pointer Dereference allows attackers to cause a denial of service (or application crash). This only applies when lxml is used together with libxml2 2.9.10 through 2.9.14. libxml2 2.9.9 and earlier are not affected. It allows triggering crashes through forged input data, given a vulnerable code

Affects 8 Linux releases across 15 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2022-2309 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

libxml2→ fixed in2.9.10+dfsg-6.7+deb11u5urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libxml2
```

Debian bookworm

Source: Debian Security Tracker

libxml2→ fixed in2.9.14+dfsg-1.3~deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libxml2
```
lxml→ fixed in4.9.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y lxml
```

Debian trixie

Source: Debian Security Tracker

libxml2→ fixed in2.9.14+dfsg-1.3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libxml2
```
lxml→ fixed in4.9.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y lxml
```

Alpine v3.20

Source: Alpine secdb

libxml2→ fixed in2.10.0-r0
```
apk update && apk add --upgrade libxml2
```

py3-lxml→ fixed in4.9.2-r0

apk update && apk add --upgrade py3-lxml

Alpine v3.21

Source: Alpine secdb

libxml2→ fixed in2.10.0-r0
```
apk update && apk add --upgrade libxml2
```

py3-lxml→ fixed in4.9.2-r0

apk update && apk add --upgrade py3-lxml

Alpine edge

Source: Alpine secdb

libxml2→ fixed in2.10.0-r0
```
apk update && apk add --upgrade libxml2
```

py3-lxml→ fixed in4.9.2-r0

apk update && apk add --upgrade py3-lxml

Alpine v3.18

Source: Alpine secdb

libxml2→ fixed in2.10.0-r0
```
apk update && apk add --upgrade libxml2
```

py3-lxml→ fixed in4.9.2-r0

apk update && apk add --upgrade py3-lxml

Alpine v3.19

Source: Alpine secdb

libxml2→ fixed in2.10.0-r0
```
apk update && apk add --upgrade libxml2
```

py3-lxml→ fixed in4.9.2-r0

apk update && apk add --upgrade py3-lxml

Are YOU affected by CVE-2022-2309?

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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Continuous monitoring beats manual checking

CVE-2022-2309dropped 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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