Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dm: fix a race condition in retrieve_deps There's a race condition in the multipath target when retrieve_deps races with multipath_message calling dm_get_device and dm_put_device. retrieve_deps walks the list of open devices without holding any lock but multipath may add or remove devices to the list while it is running. The end result may be memory corruption or use-after-free memory access. See this description of a UAF with multipath_message(): https://listman.redhat.com/archives/dm-devel/2022-October/052373.html Fix this bug by introducing a new rw semaphore "devices_lock". We grab devices_lock for read in retrieve_deps and we grab it for write in dm_get_device and dm_put_device.
References
- https://git.kernel.org/stable/c/38f6e5ae5d9ff4a4050ea6f7b543d5d5a4e087cf
- https://git.kernel.org/stable/c/dbf1a719850577bb51fc7512a3972994b797a17b
- https://git.kernel.org/stable/c/f6007dce0cd35d634d9be91ef3515a6385dcee16
FAQ
What is CVE-2023-54324?
CVE-2023-54324 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: dm: fix a race condition in retrieve_deps There's a race condition in the multipath target when retrieve_deps races with multipath...
How severe is CVE-2023-54324?
CVSS scoring is not yet available for CVE-2023-54324. Check NVD for updates.
Is there a patch for CVE-2023-54324?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.