Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: liveupdate: Reference count incoming FLB data Increment the incoming FLB refcount in liveupdate_flb_get_incoming() so that the FLB structure cannot be freed while the caller is actively using it. Add an additional liveupdate_flb_put_incoming() function so the caller can explicitly indicate when it is done using the FLB data. During a Live Update, a subsystem might need to hold onto the incoming File-Lifecycle-Bound (FLB) data for an extended period, such as during device enumeration. Incrementing the reference count guarantees that the data remains valid and accessible until the subsystem releases it, preventing future use-after-free bugs.
References
- https://git.kernel.org/stable/c/725ada0273a0f48a67fd59cc518d7f8055fe3d5c
- https://git.kernel.org/stable/c/d8e47bd066d7e626f9f45d416182d585b7e18b9b
FAQ
What is CVE-2026-80642?
CVE-2026-80642 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: liveupdate: Reference count incoming FLB data Increment the incoming FLB refcount in liveupdate_flb_get_incoming() so that the FLB...
How severe is CVE-2026-80642?
CVSS scoring is not yet available for CVE-2026-80642. Check NVD for updates.
Is there a patch for CVE-2026-80642?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.