CVE-2026-53689 · cross-distro fix matrix

CVE-2026-53689: It was discovered that LIBNFS incorrectly handled certain string sizes when

Affects 4 Linux releases across 16 (distro × package) combinations. First disclosed: 2026-06-10.

CVSS v3:HIGH · 7.1(NVD-published)

Fix per ecosystem

Each block below is a distro release where CVE-2026-53689 has a known fix. Run the listed command on that distro to remediate.

Ubuntu jammy

Source: Ubuntu USN

libnfs→ fixed in4.0.0-1ubuntu0.1USN-8464-1

sudo apt-get install --only-upgrade -y libnfs

libnfs-dev→ fixed in4.0.0-1ubuntu0.1USN-8464-1

sudo apt-get install --only-upgrade -y libnfs-dev

libnfs-utils→ fixed in4.0.0-1ubuntu0.1USN-8464-1

sudo apt-get install --only-upgrade -y libnfs-utils

libnfs13→ fixed in4.0.0-1ubuntu0.1USN-8464-1

sudo apt-get install --only-upgrade -y libnfs13

Ubuntu noble

Source: Ubuntu USN

libnfs→ fixed in5.0.2-1ubuntu0.24.04.1USN-8464-1
```
sudo apt-get install --only-upgrade -y libnfs
```
libnfs-dev→ fixed in5.0.2-1ubuntu0.24.04.1USN-8464-1
```
sudo apt-get install --only-upgrade -y libnfs-dev
```
libnfs-utils→ fixed in5.0.2-1ubuntu0.24.04.1USN-8464-1
```
sudo apt-get install --only-upgrade -y libnfs-utils
```
libnfs14→ fixed in5.0.2-1ubuntu0.24.04.1USN-8464-1
```
sudo apt-get install --only-upgrade -y libnfs14
```

Ubuntu questing

Source: Ubuntu USN

libnfs→ fixed in5.0.2-1ubuntu0.25.10.1USN-8464-1
```
sudo apt-get install --only-upgrade -y libnfs
```
libnfs-dev→ fixed in5.0.2-1ubuntu0.25.10.1USN-8464-1
```
sudo apt-get install --only-upgrade -y libnfs-dev
```
libnfs-utils→ fixed in5.0.2-1ubuntu0.25.10.1USN-8464-1
```
sudo apt-get install --only-upgrade -y libnfs-utils
```
libnfs14→ fixed in5.0.2-1ubuntu0.25.10.1USN-8464-1
```
sudo apt-get install --only-upgrade -y libnfs14
```

Ubuntu resolute

Source: Ubuntu USN

libnfs→ fixed in5.0.2-1ubuntu1.1USN-8464-1

sudo apt-get install --only-upgrade -y libnfs

libnfs-dev→ fixed in5.0.2-1ubuntu1.1USN-8464-1

sudo apt-get install --only-upgrade -y libnfs-dev

libnfs-utils→ fixed in5.0.2-1ubuntu1.1USN-8464-1

sudo apt-get install --only-upgrade -y libnfs-utils

libnfs14→ fixed in5.0.2-1ubuntu1.1USN-8464-1

sudo apt-get install --only-upgrade -y libnfs14

Are YOU affected by CVE-2026-53689?

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-2026-53689dropped 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. From $9/mo, 14-day free trial, cancel anytime.

See StackPatch (from $9/mo)