Kernel compromise via released USB PHY reuse
Published Nov 19, 2024 · Updated May 23, 2026
Use-after-free in the Linux kernel sunxi MUSB driver allows local users to compromise kernel security through driver re-registration. sunxi_musb_exit() calls devm_usb_put_phy() on glue->xceiv, but a later musb_driver registration reuses that released USB PHY in sunxi_musb_init(). Low-privileged local access is required; successful exploitation can disclose or alter data or crash the system.
Summary
What happened
Use-after-free in the Linux kernel sunxi MUSB driver allows local users to compromise kernel security through driver re-registration. sunxi_musb_exit() calls devm_usb_put_phy() on glue->xceiv, but a later musb_driver registration reuses that released USB PHY in sunxi_musb_init(). Low-privileged local access is required; successful exploitation can disclose or alter data or crash the system.
The record
- CVE
- CVE-2024-50269
- Published
- Nov 19, 2024
- Updated
- May 23, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-416, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 19, 2024CVE publishedPublication date reported by the CVE source.
- May 23, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=4.13.10 <4.14
- Affected versionversion=4.14
- Affected versionversion=4.4.95 <4.5
- Affected versionversion=4.9.59 <4.10
- Affected versionversion=583a4219841d00e96b5de55be160aa7eb7721a4d
- Affected versionversion=6ed05c68cbcae42cd52b8e53b66952bfa9c002ce <498dbd9aea205db9da674994b74c7bf8e18448bd
- Affected versionversion=6ed05c68cbcae42cd52b8e53b66952bfa9c002ce <4aa77d5ea9944468e16c3eed15e858fd5de44de1
- Affected versionversion=6ed05c68cbcae42cd52b8e53b66952bfa9c002ce <63559ba8077cbadae1c92a65b73ea522bf377dd9
- Affected versionversion=6ed05c68cbcae42cd52b8e53b66952bfa9c002ce <6e2848d1c8c0139161e69ac0a94133e90e9988e8
- Affected versionversion=6ed05c68cbcae42cd52b8e53b66952bfa9c002ce <721ddad945596220c123eb6f7126729fe277ee4f
- Affected versionversion=6ed05c68cbcae42cd52b8e53b66952bfa9c002ce <8a30da5aa9609663b3e05bcc91a916537f66a4cd
- Affected versionversion=6ed05c68cbcae42cd52b8e53b66952bfa9c002ce <b08baa75b989cf779cbfa0969681f8ba2dc46569
- Affected versionversion=6ed05c68cbcae42cd52b8e53b66952bfa9c002ce <ccd811c304d2ee56189bfbc49302cb3c44361893
- Affected versionversion=a2259ebaa933331c53904caf792b619ec42f0da5
- Affected versionversion=b4ecc15d6f5a13c0bbe2777438e87e321f83faaa
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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