In the Linux kernel, the following vulnerability has been resolved: net: qrtr: Avoid potential use after free in MHI send It is possible that the MHI ul_callback will be invoked immediately following the queueing of the skb for transmission, leading to the callback decrementing the refcount of the associated sk and freeing the skb. As such the dereference of skb and the increment of the sk refcount must happen before the skb is queued, to avoid the skb to be used after free and potentially the sk to drop its last refcount..

An update of the linux package has been released.

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: net: qrtr: Avoid potential use after     free in MHI send It is possible that the MHI ul_callback will be invoked immediately following the     queueing of the skb for transmission, leading to the callback decrementing the refcount of the associated     sk and freeing the skb. As such the dereference of skb and the increment of the sk refcount must happen     before the skb is queued, to avoid the skb to be used after free and potentially the sk to drop its last     refcount.. (CVE-2021-46973)

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

ID	Name	Product	Family	Type	Severity
333941	Photon OS 5.0: Linux PHSA-2026-5.0-92-0926	Nessus	PhotonOS Local Security Checks	Local	high
329326	Photon OS 5.0: Linux PHSA-2026-5.0-0926	Nessus	PhotonOS Local Security Checks	Local	high
229784	Linux Distros Unpatched Vulnerability : CVE-2021-46973	Nessus	Misc.	Local	high
203374	Photon OS 4.0: Linux PHSA-2021-4.0-0031	Nessus	PhotonOS Local Security Checks	Local	high

Detections

Analytics

CVE-2021-46973

high

Tenable Plugins

high

high

high

high