CVE-2026-31595
Description
A flaw was found in the Linux kernel's pci-epf-vntb module. This vulnerability occurs due to improper handling of the cmd_handler work during the epf_ntb_epc_cleanup process. If the delayed work is not disabled before clearing BAR mappings and doorbells, the handler can attempt to access resources that have already been torn down. This can lead to a kernel paging request error and an internal system error, resulting in a Denial of Service (DoS).
Understanding the Weakness (CWE)
Integrity,Other
Technical Impact: Alter Execution Logic; Unexpected State
The main problem is that -- if a lock is overcome -- data could be altered in a bad state.
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