CVE-2022-50039

In the Linux kernel, the following vulnerability has been resolved:

stmmac: intel: Add a missing clk_disable_unprepare() call in intel_eth_pci_remove()

Commit 09f012e64e4b (stmmac: intel: Fix clock handling on error and remove paths) removed this clk_disable_unprepare()

This was partly revert by commit ac322f86b56c (net: stmmac: Fix clock handling on remove path) which removed this clk_disable_unprepare() because:

While unloading the dwmac-intel driver, clk_disable_unprepare() is being called twice in stmmac_dvr_remove() and intel_eth_pci_remove(). This causes kernel panic on the second call.

However later on, commit 5ec55823438e8 (net: stmmac: add clocks management for gmac driver) has updated stmmac_dvr_remove() which do not call clk_disable_unprepare() anymore.

So this call should now be called from intel_eth_pci_remove().

Affected Software

References

• https://git.kernel.org/stable/c/02f3642d8e657c05f382729c165bed46745dc18c
• https://git.kernel.org/stable/c/47129531196054b374017555165b47a43cdb6f41
• https://git.kernel.org/stable/c/5c23d6b717e4e956376f3852b90f58e262946b50
• https://git.kernel.org/stable/c/9400aeb419d35e718e90aa14a97c11229d0a40bc