CVE-2023-52505
Vulnerability from cvelistv5
Published
2024-03-02 21:52
Modified
2024-11-04 14:48
Severity ?
Summary
phy: lynx-28g: serialize concurrent phy_set_mode_ext() calls to shared registers
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/139ad1143151a07be93bf741d4ea7c89e59f89ce
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6f901f8448c6b25ed843796b114471d2a3fc5dfb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c2d7c79898b427d263c64a4841987eec131f2d4e
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

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