CVE-2001-0822: FPF kernel module 1.0 allows a remote attacker to cause a denial of service via fragmented packets.

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MEDIUM 5.0WATCHLISTDOWNGRADE

CVE-2001-0822 is a medium-severity flaw (CVSS 5.0) affecting fpf linux kernel module. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

FPF kernel module 1.0 allows a remote attacker to cause a denial of service via fragmented packets.

Why this priority

Public exploit reference
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.8% (top 22%)
CISA exploited list	No
Published	2001-12-06
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: packet knights

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2001-12-06 05:00 UTCPublished CVE record published
2026-06-16 21:55 UTCUpdated Record last modified

packet knights fpf linux kernel module DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy fpf-linux-kernel-module || rpm -q fpf-linux-kernel-module || fpf-linux-kernel-module --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison fpf-linux-kernel-module sudo apt install fpf-linux-kernel-module=<VERSION_BEFORE_1.0> sudo apt-mark hold fpf-linux-kernel-module

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list fpf-linux-kernel-module sudo dnf downgrade fpf-linux-kernel-module-<VERSION_BEFORE_1.0> sudo dnf versionlock add fpf-linux-kernel-module

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2001-0822?

fpf linux kernel module: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2001-0822 being exploited?

CVE-2001-0822 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2001-0822 affect?

CVE-2001-0822 affects fpf linux kernel module. Severity is medium (CVSS 5.0). FPF kernel module 1.0 allows a remote attacker to cause a denial of service via fragmented packets.

How urgent is CVE-2001-0822?

Priority 47/100. Public exploit reference; On your watchlist

Software pages

Linux kernel vulnerabilities

References

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