CVE-2024-42358: PDFio is a simple C library for reading and writing PDF files

Q: How do I fix CVE-2024-42358?

pdfio: upgrade to 1.3.1. Exact commands for each OS are on this page.

Q: Is CVE-2024-42358 being exploited?

CVE-2024-42358 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-2024-42358 affect?

CVE-2024-42358 affects pdfio. Severity is medium (CVSS 6.2). PDFio is a simple C library for reading and writing PDF files. There is a denial of service (DOS) vulnerability in the TTF parser. Maliciously crafted TTF files can cause the program to utilize 100% of the Memory and enter an infinite loop.

Q: How urgent is CVE-2024-42358?

Priority 33/100. Public exploit reference

Routine

MEDIUM 6.2UPGRADE

CVE-2024-42358 is a medium-severity flaw (CVSS 6.2) affecting pdfio. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PDFio is a simple C library for reading and writing PDF files. There is a denial of service (DOS) vulnerability in the TTF parser. Maliciously crafted TTF files can cause the program to utilize 100% of the Memory and enter an infinite loop. This can also lead to a heap-buffer-overflow vulnerability. An infinite loop occurs in the read_camp function by nGroups value. The ttf.h library is vulnerable. A value called nGroups is extracted from the fil

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.2 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-835
Published	2024-08-06
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: msweet

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

Am I affected?

Timeline

2024-08-06 17:15 UTCPublished CVE record published
2026-06-17 07:49 UTCUpdated Record last modified

msweet pdfio UPGRADE

Affected: < 1.3.1

Fixed in: 1.3.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.3.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pdfio

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-2024-42358?

pdfio: upgrade to 1.3.1. Exact commands for each OS are on this page.

Is CVE-2024-42358 being exploited?

CVE-2024-42358 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-2024-42358 affect?

CVE-2024-42358 affects pdfio. Severity is medium (CVSS 6.2). PDFio is a simple C library for reading and writing PDF files. There is a denial of service (DOS) vulnerability in the TTF parser. Maliciously crafted TTF files can cause the program to utilize 100% of the Memory and enter an infinite loop.

How urgent is CVE-2024-42358?

Priority 33/100. Public exploit reference

References

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