High7.5Red Hat Linux

High [CVE-2026-55379] Denial of Service via crafted BDF font file

This high-severity Red Hat Linux advisory covers CVE-2026-55379 affecting Red Hat Enterprise Linux 8.

CVE-2026-55379 Published Jul 6, 2026Updated by vendor Jul 6, 2026

CVE-2026-55379

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

Denial of Service via crafted BDF font file. Red Hat rates this important (CVSS 7.5).

Weakness: CWE-770. Red Hat lists fixing advisory RHSA-2026:39127 with package python-pillow-0:5.1.1-22.el8_10.

Affected product named by the advisory: Red Hat Enterprise Linux 8.

Affected versions

< 12.3.0

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Fixed versions

python-pillow-0:5.1.1-22.el8_10
RHSA-2026:39127

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Do not load BDF font files from untrusted sources. Applications that only process standard image formats (PNG, JPEG, etc.) and do not use BdfFontFile or ImageFont.load() with BDF files are not affected.

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

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