usb: musb: sunxi: Fix accessing an released usb phy
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
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().
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 4.4.95 to before 4.5; 4.9.59 to before 4.10; 4.13.10 to before 4.14 | 4.5, 4.10, 4.14 | Patch available | CNA |
| Linux | Linux | 4.14 and later | 4.19.324, 5.4.286, 5.10.230, 5.15.172, 6.1.117, 6.6.61, 6.11.8, 6.12 | Patch available | CNA |
- Linux VendorLinux Affected 4.4.95 to before 4.5; 4.9.59 to before 4.10; 4.13.10 to before 4.14 Fixed in 4.5, 4.10, 4.14 Patch available CNA
- Linux VendorLinux Affected 4.14 and later Fixed in 4.19.324, 5.4.286, 5.10.230, 5.15.172, 6.1.117, 6.6.61, 6.11.8, 6.12 Patch available CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.4.95 to before 4.5; 4.9.59 to before 4.10; 4.13.10 to before 4.14; 4.14 to before 4.19.324; 4.20 to before 5.4.286; 5.5 to before 5.10.230; 5.11 to before 5.15.172; 5.16 to before 6.1.117; 6.2 to before 6.6.61; 6.7 to before 6.11.8 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:* | 6.12 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:* | 6.12 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:* | 6.12 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:* | 6.12 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:* | 6.12 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.12:rc6:*:*:*:*:*:* | 6.12 rc6 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.4.95 to before 4.5; 4.9.59 to before 4.10; 4.13.10 to before 4.14; 4.14 to before 4.19.324; 4.20 to before 5.4.286; 5.5 to before 5.10.230; 5.11 to before 5.15.172; 5.16 to before 6.1.117; 6.2 to before 6.6.61; 6.7 to before 6.11.8 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:* Versions 6.12 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:* Versions 6.12 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:* Versions 6.12 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:* Versions 6.12 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:* Versions 6.12 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.12:rc6:*:*:*:*:*:* Versions 6.12 rc6 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.5, 4.10, 4.14
- Fix · CNA Linux (Linux) Fixed in 4.19.324, 5.4.286, 5.10.230, 5.15.172, 6.1.117, 6.6.61, 6.11.8, 6.12
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-50269
- 2026-10-03 Alias added: GHSA-xrw7-56rh-2jrq
References
Patch 8
- https://git.kernel.org/stable/c/721ddad945596220c123eb6f7126729fe277ee4f
- https://git.kernel.org/stable/c/4aa77d5ea9944468e16c3eed15e858fd5de44de1
- https://git.kernel.org/stable/c/6e2848d1c8c0139161e69ac0a94133e90e9988e8
- https://git.kernel.org/stable/c/63559ba8077cbadae1c92a65b73ea522bf377dd9
- https://git.kernel.org/stable/c/ccd811c304d2ee56189bfbc49302cb3c44361893
- https://git.kernel.org/stable/c/8a30da5aa9609663b3e05bcc91a916537f66a4cd
- https://git.kernel.org/stable/c/b08baa75b989cf779cbfa0969681f8ba2dc46569
- https://git.kernel.org/stable/c/498dbd9aea205db9da674994b74c7bf8e18448bd
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Sources
- CVE-2024-50269 · CVE Program
- CVE-2024-50269 · NVD
- FIRST EPSS
- GHSA-xrw7-56rh-2jrq · GitHub Advisory Database · CC BY 4.0
- CVE-2024-50269 · Red Hat security data · CC BY 4.0
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