Security Advisory

CVE-2023-52837

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2024-05-21 15:31:37

Last updated 2026-05-11 19:33:58

Assigner Linux

State PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: nbd: fix uaf in nbd_open Commit 4af5f2e03013 ("nbd: use blk_mq_alloc_disk and blk_cleanup_disk") cleans up disk by blk_cleanup_disk() and it wont set disk->private_data as NULL as before. UAF may be triggered in nbd_open() if someone tries to open nbd device right after nbd_put() since nbd has been free in nbd_dev_remove(). Fix this by implementing ->free_disk and free private data in it.

← Browse all CVEs View on cve.org ↗