CVE-2024-50269
usb: musb: sunxi: Fix accessing an released usb phy
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usb: musb: sunxi: Fix accessing an released usb phy
In the Linux kernel, the following vulnerability has been resolved: usb: musb: sunxi: Fix accessing an released usb phy Commit 6ed05c68cbca ("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().
Reserved 2024-10-21 | Published 2024-11-19 | Updated 2024-12-19 | Assigner Linuxgit.kernel.org/...c/721ddad945596220c123eb6f7126729fe277ee4f
git.kernel.org/...c/4aa77d5ea9944468e16c3eed15e858fd5de44de1
git.kernel.org/...c/6e2848d1c8c0139161e69ac0a94133e90e9988e8
git.kernel.org/...c/63559ba8077cbadae1c92a65b73ea522bf377dd9
git.kernel.org/...c/ccd811c304d2ee56189bfbc49302cb3c44361893
git.kernel.org/...c/8a30da5aa9609663b3e05bcc91a916537f66a4cd
git.kernel.org/...c/b08baa75b989cf779cbfa0969681f8ba2dc46569
git.kernel.org/...c/498dbd9aea205db9da674994b74c7bf8e18448bd
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