CVE-2026-98757usb: cdns3: fix use-after-free in cdns3_gadget_exit()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: fix use-after-free in cdns3_gadget_exit() cdns3_gadget_start() arms two works on system_freezable_wq: pending_status_wq for the deferred ep0 status stage and aligned_buf_wq for realigned request buffers. Both handlers use the cdns3_device the works are embedded in, and cdns3_pending_setup_status_handler() also calls the ep0 request completion. cdns3_gadget_exit() does not wait for these works. It frees all endpoints and aligned buffers and drops the last reference to the gadget device, which frees priv_dev, so a work queued before the exit can run after the free. Fix this by waiting for both works after the gadget driver is unbound and the IRQ is freed, when no new work can be queued, and before the endpoints and buffers are released. This issue was found by an in-house static analysis tool.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | from 7733f6c32e36ff9d7adadf40001039bf219b1cbe before cc448700db656cceb4b411bf99a2e7132144d035; from 7733f6c32e36ff9d7adadf40001039bf219b1cbe before 95160fe606e685ff18de1e6ddcbc08289476004e; 7733f6c32e36ff9d7adadf40001039bf219b1cbe builds before 159dada48ee2d53eff46e66a8011d67b2c209bbc; from 7733f6c32e36ff9d7adadf40001039bf219b1cbe before ebe9b68c396792c15d0ac690d592e449e74ed804 | CNA record |
References
- https://git.kernel.org/stable/c/cc448700db656cceb4b411bf99a2e7132144d035
- https://git.kernel.org/stable/c/95160fe606e685ff18de1e6ddcbc08289476004e
- https://git.kernel.org/stable/c/159dada48ee2d53eff46e66a8011d67b2c209bbc
- https://git.kernel.org/stable/c/ebe9b68c396792c15d0ac690d592e449e74ed804
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.