CVE-2024-46797

CVE-2024-46797 describes a deadlock vulnerability in the Linux kernel's powerpc/qspinlock implementation, specifically affecting the MCS queue mechanism. This flaw occurs when an interrupt during queued_spin_lock_slowpath() leads to stale lock values, causing a CPU to incorrectly update a qnode's "next" pointer and resulting in an indefinite spin. The vulnerability is rated Medium severity (CVSS 5.5) with a local attack vector and low attack complexity, potentially leading to high availability impact (system lockup) but no confidentiality or integrity compromise. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.