The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: RDMA/rtrs-clt: destroy sysfs after     removing session from active list A session can be removed dynamically by sysfs interface remove_path     that eventually calls rtrs_clt_remove_path_from_sysfs function. The current     rtrs_clt_remove_path_from_sysfs first removes the sysfs interfaces and frees sess->stats object. Second it     removes the session from the active list. Therefore some functions could access non-connected session and     access the freed sess->stats object even-if they check the session status before accessing the session.
    For instance rtrs_clt_request and get_next_path_min_inflight check the session status and try to send IO     to the session. The session status could be changed when they are trying to send IO but they could not     catch the change and update the statistics information in sess->stats object, and generate use-after-free     problem. (see: RDMA/rtrs-clt: Check state of the rtrs_clt_sess before reading its stats) This patch     changes the rtrs_clt_remove_path_from_sysfs to remove the session from the active session list and then     destroy the sysfs interfaces. Each function still should check the session status because closing or error     recovery paths can change the status. (CVE-2021-47026)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Published	Updated	Severity
243649	Linux Distros Unpatched Vulnerability : CVE-2021-47026	Nessus	Misc.	8/5/2025	7/17/2026	high
239841	TencentOS Server 4: kernel (TSSA-2024:0960)	Nessus	Tencent Local Security Checks	6/16/2025	11/23/2025	critical

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