cve/2024/CVE-2024-26739.md

CVE-2024-26739

Description

In the Linux kernel, the following vulnerability has been resolved:net/sched: act_mirred: don't override retval if we already lost the skbIf we're redirecting the skb, and haven't called tcf_mirred_forward(),yet, we need to tell the core to drop the skb by setting the retcodeto SHOT. If we have called tcf_mirred_forward(), however, the skbis out of our hands and returning SHOT will lead to UaF.Move the retval override to the error path which actually need it.

POC

Reference

No PoCs from references.

Github

• https://github.com/bygregonline/devsec-fastapi-report