Medium [CVE-2026-68218] Free allocated workqueue
This medium-severity Red Hat Linux advisory covers CVE-2026-68218 affecting Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat OpenShift Container Platform 4.
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Summary
In the Linux kernel, the following vulnerability has been resolved: media: pci: dm1105: Free allocated workqueue Destroy allocated workqueue in remove() callback to free its resources, thus fixing memory leak. This issue arises from the driver's failure to properly deallocate resources, specifically a workqueue, when the device is removed.
This oversight can lead to a memory leak, which a local attacker could potentially exploit to cause a denial of service (DoS) by exhausting system memory. This issue affects systems using the dm1105 DVB PCI adapter driver.
The driver allocates a workqueue on probe but does not destroy it on remove, leaking memory. Systems without dm1105 hardware are not affected.
Red Hat severity: Low — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-772.
Affected Red Hat products: Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat OpenShift Container Platform 4. Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: kernel-rt.
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 days 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 days ago·verify at source
Mitigation checklist
- To mitigate this issue, prevent the dm1105 module from loading. See https://access.redhat.com/solutions/41278 for instructions.
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
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