2024-09-04 19:54:38
Linux
PUBLISHED
In the Linux kernel, the following vulnerability has been resolved: smb/client: avoid possible NULL dereference in cifs_free_subrequest() Clang static checker (scan-build) warning: cifsglob.h:line 890, column 3 Access to field ops results in a dereference of a null pointer. Commit 519be989717c ("cifs: Add a tracepoint to track credits involved in R/W requests") adds a check for rdata->server, and let clang throw this warning about NULL dereference. When rdata->credits.value != 0 && rdata->server == NULL happens, add_credits_and_wake_if() will call rdata->server->ops->add_credits(). This will cause NULL dereference problem. Add a check for rdata->server to avoid NULL dereference.