CVE-2026-34085
5.9
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Summary
fontconfig before 2.17.1 has an off-by-one error in allocation during sfnt capability handling, leading to a one-byte out-of-bounds write, and potentially a crash or code execution. This is in FcFontCapabilities in fcfreetype.c.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| fontconfig project | fontconfig | 0 < 2.17.1 | affected |
Weaknesses
- CWE-193: CWE-193 Off-by-one Error
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://gitlab.freedesktop.org/fontconfig/fontconfig/-/commit/b9bec06d73340f1b5727302d13ac3df307b7febc
- https://gitlab.freedesktop.org/fontconfig/fontconfig/-/merge_requests/446
- https://gitlab.freedesktop.org/fontconfig/fontconfig/-/work_items/481
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