CVE-2026-98780

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: fix IP instance memory leak on kobject add failure

amdgpu_discovery_sysfs_ips() allocates ip_hw_instance with

kzalloc_flex() and initializes its embedded kobject before calling

kobject_add().

If kobject_add() fails, the return value is ignored and execution

continues without dropping the initial kobject reference. The failed

kobject is not retained in the kset list, so the normal sysfs teardown

path cannot find it. As a result, ip_hw_instance_release() is never

called and the ip_hw_instance allocation is leaked.

Call kobject_put() when kobject_add() fails so the initial reference is

dropped and ip_hw_instance_release() can free the allocation. Keep the

existing best-effort sysfs behavior by continuing with the remaining IP

entries after the failed registration.

The issue was identified by a static analysis tool I developed and

confirmed by manual review.

(cherry picked from commit 5c75fbcca8af1096d8d9

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References