CVE-2025-68282usb: gadget: udc: fix use-after-free in usb_gadget_state_work
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 89% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: udc: fix use-after-free in usb_gadget_state_work A race condition during gadget teardown can lead to a use-after-free in usb_gadget_state_work(), as reported by KASAN: BUG: KASAN: invalid-access in sysfs_notify+0x2c/0xd0 Workqueue: events usb_gadget_state_work The fundamental race occurs because a concurrent event (e.g., an interrupt) can call usb_gadget_set_state() and schedule gadget->work at any time during the cleanup process in usb_del_gadget(). Commit 399a45e5237c ("usb: gadget: core: flush gadget workqueue after device removal") attempted to fix this by moving flush_work() to after device_del(). However, this does not fully solve the race, as a new work item can still be scheduled *after* flush_work() completes but before the gadget's memory is freed, leading to the same use-after-free. This patch fixes the race condition robustly by introducing a 'teardown' flag and a 'state_lock' spinlock to the usb_gadget struct. The flag is set during cleanup in usb_del_gadget() *before* calling flush_work() to prevent any new work from being scheduled once cleanup has commenced. The scheduling site, usb_gadget_set_state(), now checks this flag under the lock before queueing the work, thus safely closing the race window.
Timeline
ID reserved
By Linux
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 – < dddc944d65169b552e09cb54e3ed4fbb9ea26416
- affected 5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 – < eee16f3ff08e759ea828bdf7dc1c0ef2f22134f5
- affected 5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 – < c12a0c3ef815ddd67e47f9c819f9fe822fed5467
- affected 5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 – < f02a412c0a18f02f0f91b0a3d9788315a721b7fd
- affected 5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 – < 10014310193cf6736c1aeb4105c5f4a0818d0c65
- affected 5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 – < 3b32caa73d135eea8fb9cabb45e9fc64c5a3ecb9
- affected 5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 – < baeb66fbd4201d1c4325074e78b1f557dff89b5b
- affected 3.12
- unaffected < 3.12
- unaffected 5.10.248 – ≤ 5.10.*
- unaffected 5.15.198 – ≤ 5.15.*
- unaffected 6.1.159 – ≤ 6.1.*
- unaffected 6.6.119 – ≤ 6.6.*
- unaffected 6.12.61 – ≤ 6.12.*
- unaffected 6.17.11 – ≤ 6.17.*
- unaffected 6.18 – ≤ *
References
References7
- https://git.kernel.org/stable/c/dddc944d65169b552e09cb54e3ed4fbb9ea26416 (opens in a new tab)
- https://git.kernel.org/stable/c/eee16f3ff08e759ea828bdf7dc1c0ef2f22134f5 (opens in a new tab)
- https://git.kernel.org/stable/c/c12a0c3ef815ddd67e47f9c819f9fe822fed5467 (opens in a new tab)
- https://git.kernel.org/stable/c/f02a412c0a18f02f0f91b0a3d9788315a721b7fd (opens in a new tab)
- https://git.kernel.org/stable/c/10014310193cf6736c1aeb4105c5f4a0818d0c65 (opens in a new tab)
- https://git.kernel.org/stable/c/3b32caa73d135eea8fb9cabb45e9fc64c5a3ecb9 (opens in a new tab)
- https://git.kernel.org/stable/c/baeb66fbd4201d1c4325074e78b1f557dff89b5b (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-203798 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2025-68282)Record last updated .