Vulnerability-Lookup

CVE-2026-90019 (GCVE-0-2026-90019)

Vulnerability from cvelistv5 – Published: 2026-09-16 10:33 – Updated: 2026-09-16 10:33

Title

usb: gadget: fix null pointer dereference in usb_put_function_instance()

Summary

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: fix null pointer dereference in usb_put_function_instance() usb_put_function_instance() attempts to dereference fd inside fi struct to get mod in uvc_alloc_inst() error path. However, fd is not allocated until later in try_get_usb_function_instance() after allocating fi in uvc_alloc_inst() and thus guranteed to be null in error path. Fix this by adding a null check for fi->fd that returns if fd is null.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/0fc54a00954f9f4c3…
https://git.kernel.org/stable/c/6e6736c049683380f…
https://git.kernel.org/stable/c/3a9691fff79bcce95…
https://git.kernel.org/stable/c/7a4f4ca7ff32ae248…
https://git.kernel.org/stable/c/6ea3a073ca97716d4…
https://git.kernel.org/stable/c/d3a7fa61997db3bf6…
https://git.kernel.org/stable/c/5117f236e9e307443…
https://git.kernel.org/stable/c/6e74ac5c596fd246e…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 , < 0fc54a00954f9f4c3e3d4ffa64a530685d99a39b (git) Affected: 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 , < 6e6736c049683380f5e20becde498986e9293ca4 (git) Affected: 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 , < 3a9691fff79bcce95338435599df6d3ae433cfdc (git) Affected: 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 , < 7a4f4ca7ff32ae24807c83e2a06d62b13378d53c (git) Affected: 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 , < 6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0 (git) Affected: 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 , < d3a7fa61997db3bf6dadef4c1bd87a4fa782a817 (git) Affected: 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 , < 5117f236e9e30744338b425395d55913c4500897 (git) Affected: 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 , < 6e74ac5c596fd246e37eadfc354567179ccbe9aa (git)	guessed
Linux	Linux	Affected: 3.9 Unaffected: 0 , < 3.9 (semver) Unaffected: 5.10.270 , ≤ 5.10.* (semver) Unaffected: 5.15.221 , ≤ 5.15.* (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.51 , ≤ 6.18.* (semver) Unaffected: 7.2.5 , ≤ 7.2.* (semver) Unaffected: 7.3-rc2 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/functions.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0fc54a00954f9f4c3e3d4ffa64a530685d99a39b",
              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            },
            {
              "lessThan": "6e6736c049683380f5e20becde498986e9293ca4",
              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            },
            {
              "lessThan": "3a9691fff79bcce95338435599df6d3ae433cfdc",
              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            },
            {
              "lessThan": "7a4f4ca7ff32ae24807c83e2a06d62b13378d53c",
              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            },
            {
              "lessThan": "6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0",
              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            },
            {
              "lessThan": "d3a7fa61997db3bf6dadef4c1bd87a4fa782a817",
              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            },
            {
              "lessThan": "6e74ac5c596fd246e37eadfc354567179ccbe9aa",
              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/functions.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.9"
            },
            {
              "lessThan": "3.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.270",
                  "versionStartIncluding": "3.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.221",
                  "versionStartIncluding": "3.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "3.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "3.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "3.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.51",
                  "versionStartIncluding": "3.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.5",
                  "versionStartIncluding": "3.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc2",
                  "versionStartIncluding": "3.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: fix null pointer dereference in usb_put_function_instance()\n\nusb_put_function_instance() attempts to dereference fd inside fi struct\nto get mod in uvc_alloc_inst() error path. However, fd is not allocated\nuntil later in try_get_usb_function_instance() after allocating fi in\nuvc_alloc_inst() and thus guranteed to be null in error path. Fix this\nby adding a null check for fi-\u003efd that returns if fd is null."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T10:33:24.173Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0fc54a00954f9f4c3e3d4ffa64a530685d99a39b"
        },
        {
          "url": "https://git.kernel.org/stable/c/6e6736c049683380f5e20becde498986e9293ca4"
        },
        {
          "url": "https://git.kernel.org/stable/c/3a9691fff79bcce95338435599df6d3ae433cfdc"
        },
        {
          "url": "https://git.kernel.org/stable/c/7a4f4ca7ff32ae24807c83e2a06d62b13378d53c"
        },
        {
          "url": "https://git.kernel.org/stable/c/6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0"
        },
        {
          "url": "https://git.kernel.org/stable/c/d3a7fa61997db3bf6dadef4c1bd87a4fa782a817"
        },
        {
          "url": "https://git.kernel.org/stable/c/5117f236e9e30744338b425395d55913c4500897"
        },
        {
          "url": "https://git.kernel.org/stable/c/6e74ac5c596fd246e37eadfc354567179ccbe9aa"
        }
      ],
      "title": "usb: gadget: fix null pointer dereference in usb_put_function_instance()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90019",
    "datePublished": "2026-09-16T10:33:24.173Z",
    "dateReserved": "2026-09-11T19:38:34.781Z",
    "dateUpdated": "2026-09-16T10:33:24.173Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-90019\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-09-16T11:17:14.780\",\"lastModified\":\"2026-09-16T11:17:14.780\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nusb: gadget: fix null pointer dereference in usb_put_function_instance()\\n\\nusb_put_function_instance() attempts to dereference fd inside fi struct\\nto get mod in uvc_alloc_inst() error path. However, fd is not allocated\\nuntil later in try_get_usb_function_instance() after allocating fi in\\nuvc_alloc_inst() and thus guranteed to be null in error path. Fix this\\nby adding a null check for fi-\u003efd that returns if fd is null.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/usb/gadget/functions.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2\",\"lessThan\":\"0fc54a00954f9f4c3e3d4ffa64a530685d99a39b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2\",\"lessThan\":\"6e6736c049683380f5e20becde498986e9293ca4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2\",\"lessThan\":\"3a9691fff79bcce95338435599df6d3ae433cfdc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2\",\"lessThan\":\"7a4f4ca7ff32ae24807c83e2a06d62b13378d53c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2\",\"lessThan\":\"6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2\",\"lessThan\":\"d3a7fa61997db3bf6dadef4c1bd87a4fa782a817\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2\",\"lessThan\":\"5117f236e9e30744338b425395d55913c4500897\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2\",\"lessThan\":\"6e74ac5c596fd246e37eadfc354567179ccbe9aa\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/usb/gadget/functions.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.9\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.9\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.270\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.221\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.188\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.157\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.110\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.51\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2.5\",\"lessThanOrEqual\":\"7.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.3-rc2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0fc54a00954f9f4c3e3d4ffa64a530685d99a39b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3a9691fff79bcce95338435599df6d3ae433cfdc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5117f236e9e30744338b425395d55913c4500897\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6e6736c049683380f5e20becde498986e9293ca4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6e74ac5c596fd246e37eadfc354567179ccbe9aa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7a4f4ca7ff32ae24807c83e2a06d62b13378d53c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d3a7fa61997db3bf6dadef4c1bd87a4fa782a817\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}

FKIE_CVE-2026-90019

Vulnerability from fkie_nvd - Published: 2026-09-16 11:17 - Updated: 2026-09-16 11:17

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0fc54a00954f9f4c3e3d4ffa64a530685d99a39b
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3a9691fff79bcce95338435599df6d3ae433cfdc
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5117f236e9e30744338b425395d55913c4500897
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6e6736c049683380f5e20becde498986e9293ca4
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6e74ac5c596fd246e37eadfc354567179ccbe9aa
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7a4f4ca7ff32ae24807c83e2a06d62b13378d53c
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d3a7fa61997db3bf6dadef4c1bd87a4fa782a817

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/functions.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0fc54a00954f9f4c3e3d4ffa64a530685d99a39b",
              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            },
            {
              "lessThan": "6e6736c049683380f5e20becde498986e9293ca4",
              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            },
            {
              "lessThan": "3a9691fff79bcce95338435599df6d3ae433cfdc",
              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            },
            {
              "lessThan": "7a4f4ca7ff32ae24807c83e2a06d62b13378d53c",
              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            },
            {
              "lessThan": "6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0",
              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            },
            {
              "lessThan": "d3a7fa61997db3bf6dadef4c1bd87a4fa782a817",
              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            },
            {
              "lessThan": "5117f236e9e30744338b425395d55913c4500897",
              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            },
            {
              "lessThan": "6e74ac5c596fd246e37eadfc354567179ccbe9aa",
              "status": "affected",
              "version": "0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/functions.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.9"
            },
            {
              "lessThan": "3.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: fix null pointer dereference in usb_put_function_instance()\n\nusb_put_function_instance() attempts to dereference fd inside fi struct\nto get mod in uvc_alloc_inst() error path. However, fd is not allocated\nuntil later in try_get_usb_function_instance() after allocating fi in\nuvc_alloc_inst() and thus guranteed to be null in error path. Fix this\nby adding a null check for fi-\u003efd that returns if fd is null."
    }
  ],
  "id": "CVE-2026-90019",
  "lastModified": "2026-09-16T11:17:14.780",
  "metrics": {},
  "published": "2026-09-16T11:17:14.780",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0fc54a00954f9f4c3e3d4ffa64a530685d99a39b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3a9691fff79bcce95338435599df6d3ae433cfdc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5117f236e9e30744338b425395d55913c4500897"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6e6736c049683380f5e20becde498986e9293ca4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6e74ac5c596fd246e37eadfc354567179ccbe9aa"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7a4f4ca7ff32ae24807c83e2a06d62b13378d53c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d3a7fa61997db3bf6dadef4c1bd87a4fa782a817"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-GPRV-Q9Q2-HPX6

Vulnerability from github – Published: 2026-09-16 12:30 – Updated: 2026-09-16 12:30

Details

In the Linux kernel, the following vulnerability has been resolved:

usb: gadget: fix null pointer dereference in usb_put_function_instance()

usb_put_function_instance() attempts to dereference fd inside fi struct to get mod in uvc_alloc_inst() error path. However, fd is not allocated until later in try_get_usb_function_instance() after allocating fi in uvc_alloc_inst() and thus guranteed to be null in error path. Fix this by adding a null check for fi->fd that returns if fd is null.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2026-90019"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-16T11:17:14Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: fix null pointer dereference in usb_put_function_instance()\n\nusb_put_function_instance() attempts to dereference fd inside fi struct\nto get mod in uvc_alloc_inst() error path. However, fd is not allocated\nuntil later in try_get_usb_function_instance() after allocating fi in\nuvc_alloc_inst() and thus guranteed to be null in error path. Fix this\nby adding a null check for fi-\u003efd that returns if fd is null.",
  "id": "GHSA-gprv-q9q2-hpx6",
  "modified": "2026-09-16T12:30:45Z",
  "published": "2026-09-16T12:30:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90019"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0fc54a00954f9f4c3e3d4ffa64a530685d99a39b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a9691fff79bcce95338435599df6d3ae433cfdc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5117f236e9e30744338b425395d55913c4500897"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e6736c049683380f5e20becde498986e9293ca4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e74ac5c596fd246e37eadfc354567179ccbe9aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7a4f4ca7ff32ae24807c83e2a06d62b13378d53c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3a7fa61997db3bf6dadef4c1bd87a4fa782a817"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-90019 (GCVE-0-2026-90019)

FKIE_CVE-2026-90019

GHSA-GPRV-Q9Q2-HPX6

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