UBUNTU-CVE-2026-98913: Medium severity ubuntu/linux vulnerability
In the Linux kernel, the following vulnerability has been resolved: net: thunderx: fix PTP device ref leak in nicvfprobe() caviumptpget() acquires a reference to the PTP PCI device through pcigetdevice(). If any initialization step fails after caviumptpget(), the PTP PCI device reference is leaked. Add a common error path to release the PTP reference before returning from probe failures.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
ubuntu/linux-hwe-7.0to a version that resolves this vulnerability.Fixed in 7.0.0-42.42~24.04.1 - Upgrade
Upgrade
ubuntu/linux-riscv-7.0to a version that resolves this vulnerability.Fixed in 7.0.0-42.42.1~24.04.1 - Upgrade
Upgrade
ubuntu/linuxto a version that resolves this vulnerability.Fixed in 7.0.0-42.42 - Upgrade
Upgrade
ubuntu/linux-awsto a version that resolves this vulnerability.Fixed in 7.0.0-1016.17 - Upgrade
Upgrade
ubuntu/linux-gcpto a version that resolves this vulnerability.Fixed in 7.0.0-1016.18 - Upgrade
Upgrade
ubuntu/linux-ibmto a version that resolves this vulnerability.Fixed in 7.0.0-1017.17 - Upgrade
Upgrade
ubuntu/linux-oem-7.0to a version that resolves this vulnerability.Fixed in 7.0.0-1017.17 - Upgrade
Upgrade
ubuntu/linux-oracleto a version that resolves this vulnerability.Fixed in 7.0.0-1015.16 - Upgrade
Upgrade
ubuntu/linux-riscvto a version that resolves this vulnerability.Fixed in 7.0.0-42.42.1 - Compensating control
In nicvf_probe(), add an error path that releases the PTP PCI device reference acquired by cavium_ptp_get() before returning when any subsequent initialization step fails.
Event History
Frequently Asked Questions
What condition causes the leak?
The leak occurs when cavium_ptp_get() has acquired a reference to the PTP PCI device and a later initialization step fails during nicvf_probe(). The probe failure path previously returned without releasing that reference.
What is the direct impact of the issue?
A failed device probe can leave a PTP PCI device reference unreleased. The provided data describes a reference leak; it does not state a remote attack path or other impact.
Which Ubuntu kernel package families are listed as affected?
The listed packages are ubuntu/linux, ubuntu/linux-fips, ubuntu/linux-aws, ubuntu/linux-aws-fips, ubuntu/linux-azure, ubuntu/linux-azure-fips, ubuntu/linux-gcp, and ubuntu/linux-gcp-fips.