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stable inclusion from stable-v5.10.230 commit 6e2848d1c8c0139161e69ac0a94133e90e9988e8 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB5AVU CVE: CVE-2024-50269 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=6e2848d1c8c0 -------------------------------- commit 498dbd9aea205db9da674994b74c7bf8e18448bd upstream. Commit 6ed05c68 ("usb: musb: sunxi: Explicitly release USB PHY on exit") will cause that usb phy @glue->xceiv is accessed after released. 1) register platform driver @sunxi_musb_driver // get the usb phy @glue->xceiv sunxi_musb_probe() -> devm_usb_get_phy(). 2) register and unregister platform driver @musb_driver musb_probe() -> sunxi_musb_init() use the phy here //the phy is released here musb_remove() -> sunxi_musb_exit() -> devm_usb_put_phy() 3) register @musb_driver again musb_probe() -> sunxi_musb_init() use the phy here but the phy has been released at 2). ... Fixed by reverting the commit, namely, removing devm_usb_put_phy() from sunxi_musb_exit(). Fixes: 6ed05c68 ("usb: musb: sunxi: Explicitly release USB PHY on exit") Cc: stable@vger.kernel.org Signed-off-by:Zijun Hu <quic_zijuhu@quicinc.com> Link: https://lore.kernel.org/r/20241029-sunxi_fix-v1-1-9431ed2ab826@quicinc.com Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Pu Lehui <pulehui@huawei.com>