Medium5.5Red Hat Linux

Medium [CVE-2026-89598] Linux kernel: Denial of Service in fbdev ssd1307fb due to synchronous I2C transfers

This medium-severity Red Hat Linux advisory covers CVE-2026-89598 affecting Red Hat OpenShift Container Platform 4.

CVE-2026-89598 Published Sep 11, 2026Updated by vendor Sep 11, 2026

CVE-2026-89598

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

A flaw was found in the Linux kernel's fbdev (framebuffer device) subsystem, specifically within the ssd1307fb driver. This vulnerability occurs when display damage callbacks, which handle updates to the display, perform synchronous I2C (Inter-Integrated Circuit) transfers from an atomic context.

This can lead to a 'scheduling while atomic' bug, causing system instability or a denial of service (DoS) for a local user. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

Weakness: CWE-821. Affected Red Hat products: Red Hat OpenShift Container Platform 4.

Red Hat does not currently list a fixing RHSA for this CVE.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · medium-confidence parse· fetched 48 minutes 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 · medium-confidence parse· fetched 48 minutes ago·verify at source

Mitigation

The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.

Official advisory · medium-confidence parse· fetched 48 minutes ago·verify at source

Discussion(0)

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