CVE-2022-1507: chafa: NULL Pointer Dereference in function gif_internal_decode_frame at libnsgif.c:599 allows attackers to ca

Q: How do I fix CVE-2022-1507?

chafa: upgrade to 1.10.2; fedora: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2022-1507 being exploited?

CVE-2022-1507 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-2022-1507 affect?

CVE-2022-1507 affects chafa, fedora. Severity is medium (CVSS 5.5). chafa: NULL Pointer Dereference in function gif_internal_decode_frame at libnsgif.c:599 allows attackers to cause a denial of service (crash) via a crafted input file. in GitHub repository hpjansson/chafa prior to 1.10.2. chafa: NULL Pointe

Q: How urgent is CVE-2022-1507?

Priority 39/100. Public exploit reference

Routine

MEDIUM 5.5UPGRADEMITIGATE

CVE-2022-1507 is a medium-severity flaw (CVSS 5.5) affecting chafa, fedora. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

chafa: NULL Pointer Dereference in function gif_internal_decode_frame at libnsgif.c:599 allows attackers to cause a denial of service (crash) via a crafted input file. in GitHub repository hpjansson/chafa prior to 1.10.2. chafa: NULL Pointer Dereference in function gif_internal_decode_frame at libnsgif.c:599 allows attackers to cause a denial of service (crash) via a crafted input file.

Why this priority

Public exploit reference

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	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-476
Published	2022-04-27
Last modified	2026-06-17

Publisher (CNA): huntr.dev · Vendor: chafa project · fedoraproject

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

Am I affected?

Timeline

2022-04-27 17:15 UTCPublished CVE record published
2026-06-17 04:22 UTCUpdated Record last modified

chafa project chafa UPGRADE

Affected: < 1.10.2

Fixed in: 1.10.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.10.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade chafa

Note

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

fedoraproject fedora MITIGATE

Affected: 34 · 35 · 36

Fixed in: no fixed release known

Safe to downgrade to: a release before 34

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.

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-2022-1507?

chafa: upgrade to 1.10.2; fedora: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-1507 being exploited?

CVE-2022-1507 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-2022-1507 affect?

CVE-2022-1507 affects chafa, fedora. Severity is medium (CVSS 5.5). chafa: NULL Pointer Dereference in function gif_internal_decode_frame at libnsgif.c:599 allows attackers to cause a denial of service (crash) via a crafted input file. in GitHub repository hpjansson/chafa prior to 1.10.2. chafa: NULL Pointe

How urgent is CVE-2022-1507?

Priority 39/100. Public exploit reference

Software pages

GitHub vulnerabilities

Related CVEs

CVE-2022-2301 MEDIUM 5.5 UPGRADE Buffer Over-read in GitHub repository hpjansson/chafa prior to 1.10.3.
CVE-2022-2061 LOW 3.3 UPGRADE Heap-based Buffer Overflow in GitHub repository hpjansson/chafa prior to 1.12.0.

References

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