Medium [CVE-2026-88054] Denial of Service via crafted model with empty stack dereference
This medium-severity Red Hat Linux advisory covers CVE-2026-88054 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.
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Summary
A flaw was found in Tesseract, an open-source Optical Character Recognition (OCR) engine. A remote attacker could provide a specially crafted '.traineddata' model with a zero-length stack for certain internal layers.
This would cause an empty-stack dereference during model loading, leading to a deterministic crash of the application. This vulnerability results in a Denial of Service (DoS).
Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H). Weakness: CWE-125.
Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: tesseract.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
- To mitigate this issue, ensure that Tesseract only processes `.traineddata` models from trusted sources. Avoid loading or using models from untrusted or unverified origins. Additionally, consider running applications that utilize Tesseract in a sandboxed environment to limit the potential impact of a crash.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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