CVE-2026-90020
USB: gadget: fix NULL pointer dereference in gadget_dev_ioctl()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: USB: gadget: fix NULL pointer dereference in gadget_dev_ioctl() gadget_dev_ioctl() reads dev->gadget before acquiring dev->lock, but dev->state is checked after acquiring the lock. Therefore a concurrent bind can change the device state between these operations, which can leave ioctl with a stale NULL gadget pointer and causing a NULL pointer dereference at gadget->ops->ioctl. Read dev->gadget while holding dev->lock so that the gadget pointer and device state are sampled consistently.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 16, 2026 |
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Affected Versions
Linux / Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8be30959be31b4205e3bdd2e2a6221f3a2ee7ea1 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e8219accce2f6d3502ed71f5b5e854ecf27249a6 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 87cbf9410b12f5c2d659bb01e8ecf6517cb9f28c 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 162178ca83c3de986900385a0477eb539f8e1a7e 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ebd916fdfefaacbc0e577f7037ec96b31a105e5f 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c29a83c1ff3f06d5751f6d365b606c9f81ccc4cb 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 64ec019bf9a8b12f53b9f2777d65aadb730b5a84 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < dd0eed9e165b1a6292f49e622e3dd0b7d99b106d 0 < 5.10.270 0 < 5.15.221 0 < 6.1.188 0 < 6.6.157 0 < 6.12.110 0 < 6.18.51 0 < 7.2.5
Linux / Linux
All versions affected References
git.kernel.org: https://git.kernel.org/stable/c/8be30959be31b4205e3bdd2e2a6221f3a2ee7ea1 git.kernel.org: https://git.kernel.org/stable/c/e8219accce2f6d3502ed71f5b5e854ecf27249a6 git.kernel.org: https://git.kernel.org/stable/c/87cbf9410b12f5c2d659bb01e8ecf6517cb9f28c git.kernel.org: https://git.kernel.org/stable/c/162178ca83c3de986900385a0477eb539f8e1a7e git.kernel.org: https://git.kernel.org/stable/c/ebd916fdfefaacbc0e577f7037ec96b31a105e5f git.kernel.org: https://git.kernel.org/stable/c/c29a83c1ff3f06d5751f6d365b606c9f81ccc4cb git.kernel.org: https://git.kernel.org/stable/c/64ec019bf9a8b12f53b9f2777d65aadb730b5a84 git.kernel.org: https://git.kernel.org/stable/c/dd0eed9e165b1a6292f49e622e3dd0b7d99b106d