CVE-2021-47183

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix link down processing to address NULL pointer dereference If an FC link down transition while PLOGIs are outstanding to fabric well known addresses, outstanding ABTS requests may result in a NULL pointer dereference. Driver unload requests may hang with repeated "2878" log messages. The Link down processing results in ABTS requests for outstanding ELS requests. The Abort WQEs are sent for the ELSs before the driver had set the link state to down. Thus the driver is sending the Abort with the expectation that an ABTS will be sent on the wire. The Abort request is stalled waiting for the link to come up. In some conditions the driver may auto-complete the ELSs thus if the link does come up, the Abort completions may reference an invalid structure. Fix by ensuring that Abort set the flag to avoid link traffic if issued due to conditions where the link failed.

The following products are affected by CVE-2021-47183 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2021-47183.

URL	Resource
https://git.kernel.org/stable/c/04c1af683270e4709a594bb1691b8800b945035a
https://git.kernel.org/stable/c/1854f53ccd88ad4e7568ddfafafffe71f1ceb0a6
https://git.kernel.org/stable/c/28de48a7cea495ab48082d9ff4ef63f7cb4e563a
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
https://lore.kernel.org/linux-cve-announce/2024041033-CVE-2021-47183-e130@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47183
https://www.cve.org/CVERecord?id=CVE-2021-47183