CVE-2023-53111
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-53111
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53111.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2023-53111
- Downstream
- Related
- Published
- 2025-05-02T16:15:30Z
- Modified
- 2025-08-09T20:01:27Z
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
loop: Fix use-after-free issues
doreqfilebacked() calls blkmqcompleterequest() synchronously or asynchronously when using asynchronous I/O unless memory allocation fails. Hence, modify loophandlecmd() such that it does not dereference 'cmd' nor 'rq' after doreq_filebacked() finished unless we are sure that the request has not yet been completed. This patch fixes the following kernel crash:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000054 Call trace: cssput.42938+0x1c/0x1ac loopprocesswork+0xc8c/0xfd4 looprootcgworkfn+0x24/0x34 processonework+0x244/0x558 workerthread+0x400/0x8fc kthread+0x16c/0x1e0 retfromfork+0x10/0x20
- References