In the Linux kernel, the following vulnerability has been resolved: phy: lynx-28g: serialize concurrent phy_set_mode_ext() calls to shared registers The protocol converter configuration registers PCC8, PCCC, PCCD (implemented by the driver), as well as others, control protocol converters from multiple lanes (each represented as a different struct phy). So, if there are simultaneous calls to phy_set_mode_ext() to lanes sharing the same PCC register (either for the "old" or for the "new" protocol), corruption of the values programmed to hardware is possible, because lynx_28g_rmw() has no locking. Add a spinlock in the struct lynx_28g_priv shared by all lanes, and take the global spinlock from the phy_ops :: set_mode() implementation. There are no other callers which modify PCC registers.

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: phy: lynx-28g: serialize concurrent     phy_set_mode_ext() calls to shared registers The protocol converter configuration registers PCC8, PCCC,     PCCD (implemented by the driver), as well as others, control protocol converters from multiple lanes (each     represented as a different struct phy). So, if there are simultaneous calls to phy_set_mode_ext() to lanes     sharing the same PCC register (either for the old or for the new protocol), corruption of the values     programmed to hardware is possible, because lynx_28g_rmw() has no locking. Add a spinlock in the struct     lynx_28g_priv shared by all lanes, and take the global spinlock from the phy_ops :: set_mode()     implementation. There are no other callers which modify PCC registers. (CVE-2023-52505)

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

ID	Name	Product	Family	Severity
332630	Photon OS 5.0: Linux PHSA-2023-5.0-91-0130	Nessus	PhotonOS Local Security Checks	high
247135	Linux Distros Unpatched Vulnerability : CVE-2023-52505	Nessus	Misc.	medium
203657	Photon OS 5.0: Linux PHSA-2023-5.0-0130	Nessus	PhotonOS Local Security Checks	high

Detections

Analytics

CVE-2023-52505

medium

Tenable Plugins

high

medium

high