Medium [CVE-2026-89511] Linux Kernel qede driver: Kernel panic due to NULL pointer dereference
This medium-severity Red Hat Linux advisory covers CVE-2026-89511 affecting Red Hat OpenShift Container Platform 4.
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Summary
A flaw was found in the qede driver in the Linux kernel. Under specific memory pressure conditions, the driver can encounter a NULL pointer dereference when processing network traffic using TPA (TCP Segmentation Offload) continuation fragments.
This issue stems from an uninitialized data pointer, which can lead to the system attempting to use an invalid memory page. Consequently, this can trigger a kernel panic, causing a Denial of Service (DoS) for the affected system.
Red Hat severity: Important — CVSS 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-476.
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 41 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 41 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 41 minutes ago·verify at source
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