Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.18, < 6.1.59 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/139ad1143151a07be93bf741d4ea7c89e59f89cePatch
- https://git.kernel.org/stable/c/6f901f8448c6b25ed843796b114471d2a3fc5dfbPatch
- https://git.kernel.org/stable/c/c2d7c79898b427d263c64a4841987eec131f2d4ePatch
- https://git.kernel.org/stable/c/139ad1143151a07be93bf741d4ea7c89e59f89cePatch
- https://git.kernel.org/stable/c/6f901f8448c6b25ed843796b114471d2a3fc5dfbPatch
- https://git.kernel.org/stable/c/c2d7c79898b427d263c64a4841987eec131f2d4ePatch
FAQ
What is CVE-2023-52505?
CVE-2023-52505 is a vulnerability with a CVSS score of 4.7 (MEDIUM). 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 PC...
How severe is CVE-2023-52505?
CVE-2023-52505 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-52505?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.