{"id":"CVE-2026-90020","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: gadget: fix NULL pointer dereference in gadget_dev_ioctl()\n\ngadget_dev_ioctl() reads dev->gadget before acquiring dev->lock, but\ndev->state is checked after acquir…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: gadget: fix NULL pointer dereference in gadget_dev_ioctl()\n\ngadget_dev_ioctl() reads dev->gadget before acquiring dev->lock, but\ndev->state is checked after acquir…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8be30959be31b4205e3bdd2e2a6221f3a2ee7ea1","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e8219accce2f6d3502ed71f5b5e854ecf27249a6","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 87cbf9410b12f5c2d659bb01e8ecf6517cb9f28c","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 162178ca83c3de986900385a0477eb539f8e1a7e","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ebd916fdfefaacbc0e577f7037ec96b31a105e5f","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c29a83c1ff3f06d5751f6d365b606c9f81ccc4cb","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 64ec019bf9a8b12f53b9f2777d65aadb730b5a84","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < dd0eed9e165b1a6292f49e622e3dd0b7d99b106d","Linux < 5.10.270","Linux < 5.15.221","Linux < 6.1.188","Linux < 6.6.157","Linux < 6.12.110","Linux < 6.18.51","Linux < 7.2.5","Linux (all versions)"],"published":"2026-09-16","updated":"2026-09-17","sourceUpdated":"2026-09-17T10:17:05.793","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90020","references":[{"url":"https://git.kernel.org/stable/c/162178ca83c3de986900385a0477eb539f8e1a7e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/64ec019bf9a8b12f53b9f2777d65aadb730b5a84","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/87cbf9410b12f5c2d659bb01e8ecf6517cb9f28c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8be30959be31b4205e3bdd2e2a6221f3a2ee7ea1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c29a83c1ff3f06d5751f6d365b606c9f81ccc4cb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/dd0eed9e165b1a6292f49e622e3dd0b7d99b106d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e8219accce2f6d3502ed71f5b5e854ecf27249a6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ebd916fdfefaacbc0e577f7037ec96b31a105e5f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-16T10:53:53.937Z","epss":0.0021,"epssPercentile":0.11557,"slug":"CVE-2026-90020","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nUSB: gadget: fix NULL pointer dereference in gadget_dev_ioctl()\n\ngadget_dev_ioctl() reads dev->gadget before acquiring dev->lock, but\ndev->state is checked after acquiring the lock. Therefore a concurrent\nbind can change the device state between these operations, which can\nleave ioctl with a stale NULL gadget pointer and causing a NULL pointer\ndereference at gadget->ops->ioctl.\n\nRead dev->gadget while holding dev->lock so that the gadget pointer\nand device state are sampled consistently.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}