CVE-2014-9637: GNU patch 2.7.2 and earlier allows remote attackers to cause a denial of service (memory consumption and segme

Q: How do I fix CVE-2014-9637?

fedora: mitigate or apply the listed mitigation; mageia: mitigate or apply the listed mitigation; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2014-9637 being exploited?

CVE-2014-9637 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2014-9637 affect?

CVE-2014-9637 affects fedora, mageia, ubuntu linux. Severity is medium (CVSS 5.5). GNU patch 2.7.2 and earlier allows remote attackers to cause a denial of service (memory consumption and segmentation fault) via a crafted diff file.

Q: How urgent is CVE-2014-9637?

Priority 45/100. On your watchlist

This month

MEDIUM 5.5WATCHLISTMITIGATEMITIGATEMITIGATE

CVE-2014-9637 is a medium-severity flaw (CVSS 5.5) affecting fedora, mageia, ubuntu linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GNU patch 2.7.2 and earlier allows remote attackers to cause a denial of service (memory consumption and segmentation fault) via a crafted diff file.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-399
Published	2017-08-25
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: canonical · fedoraproject · gnu · mageia

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-08-25 18:29 UTCPublished CVE record published
2026-06-17 00:18 UTCUpdated Record last modified

fedoraproject fedora MITIGATE

Affected: 20 · 21

Fixed in: no fixed release known

Safe to downgrade to: a release before 20

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

mageia mageia MITIGATE

Affected: 4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

canonical ubuntu linux MITIGATE

Affected: 12.04 · 14.04 · 14.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.04

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

gnu patch UPGRADE

Affected: <= 2.7.2

Fixed in: newer than 2.7.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy patch || rpm -q patch || patch --version

2. UPGRADE to newer than 2.7.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade patch

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade patch

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2014-9637?

fedora: mitigate or apply the listed mitigation; mageia: mitigate or apply the listed mitigation; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2014-9637 being exploited?

CVE-2014-9637 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-2014-9637 affect?

CVE-2014-9637 affects fedora, mageia, ubuntu linux. Severity is medium (CVSS 5.5). GNU patch 2.7.2 and earlier allows remote attackers to cause a denial of service (memory consumption and segmentation fault) via a crafted diff file.

How urgent is CVE-2014-9637?

Priority 45/100. On your watchlist

Software pages

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References

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