CVE-2024-50269
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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().
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.27% probability · 19th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/498dbd9aea205db9da674994b74c7bf8e18448bdPatch
- https://git.kernel.org/stable/c/4aa77d5ea9944468e16c3eed15e858fd5de44de1Patch
- https://git.kernel.org/stable/c/63559ba8077cbadae1c92a65b73ea522bf377dd9Patch
- https://git.kernel.org/stable/c/6e2848d1c8c0139161e69ac0a94133e90e9988e8Patch
- https://git.kernel.org/stable/c/721ddad945596220c123eb6f7126729fe277ee4fPatch
- https://git.kernel.org/stable/c/8a30da5aa9609663b3e05bcc91a916537f66a4cdPatch
- https://git.kernel.org/stable/c/b08baa75b989cf779cbfa0969681f8ba2dc46569Patch
- https://git.kernel.org/stable/c/ccd811c304d2ee56189bfbc49302cb3c44361893Patch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.