CVE-2020-10933 · cross-distro fix matrix

CVE-2020-10933: An issue was discovered in Ruby 2.5.x through 2.5.7, 2.6.x through 2.6.5, and 2.7.0. If a victim calls BasicSocket#read_nonblock(requested_size, buffer, exception: false), the method resizes the buffer to fit the requested size, but no data is copied. Thus, the buffer string provides the previous va

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

Fix per ecosystem

Each block below is a distro release where CVE-2020-10933 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

ruby2.7→ fixed in2.7.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ruby2.7
```

Alpine v3.20

Source: Alpine secdb

ruby→ fixed in2.6.6-r0
```
apk update && apk add --upgrade ruby
```

Alpine v3.21

Source: Alpine secdb

ruby→ fixed in2.6.6-r0
```
apk update && apk add --upgrade ruby
```

Alpine edge

Source: Alpine secdb

ruby→ fixed in2.6.6-r0
```
apk update && apk add --upgrade ruby
```

Alpine v3.18

Source: Alpine secdb

ruby→ fixed in2.6.6-r0
```
apk update && apk add --upgrade ruby
```

Alpine v3.19

Source: Alpine secdb

ruby→ fixed in2.6.6-r0
```
apk update && apk add --upgrade ruby
```

Are YOU affected by CVE-2020-10933?

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

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