Medium [CVE-2026-89590] Linux kernel (accel/rocket): Resource leaks due to improper error handling
This medium-severity Red Hat Linux advisory covers CVE-2026-89590 affecting Red Hat OpenShift Container Platform 4.
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Summary
A flaw was found in the `accel/rocket` driver within the Linux kernel. Incorrect error handling in the `rocket_job_run()` function can lead to resource leaks.
This occurs when the system fails to properly release references to Direct Memory Access (DMA) fences and Power Management (PM) resources during error conditions. The consequence is that the Neural Processing Unit (NPU) may be prevented from suspending, leading to resource exhaustion and potential system instability.
Red Hat severity: Moderate — CVSS 4.7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-911.
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 29 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 29 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 29 minutes ago·verify at source
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