Vulnerability-Lookup

GHSA-7G6W-2P3X-PF3P

Vulnerability from github – Published: 2026-02-04 18:30 – Updated: 2026-02-06 18:30

Details

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

can: ems_usb: ems_usb_read_bulk_callback(): fix URB memory leak

Fix similar memory leak as in commit 7352e1d5932a ("can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak").

In ems_usb_open(), the URBs for USB-in transfers are allocated, added to the dev->rx_submitted anchor and submitted. In the complete callback ems_usb_read_bulk_callback(), the URBs are processed and resubmitted. In ems_usb_close() the URBs are freed by calling usb_kill_anchored_urbs(&dev->rx_submitted).

However, this does not take into account that the USB framework unanchors the URB before the complete function is called. This means that once an in-URB has been completed, it is no longer anchored and is ultimately not released in ems_usb_close().

Fix the memory leak by anchoring the URB in the ems_usb_read_bulk_callback() to the dev->rx_submitted anchor.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-23058"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-04T17:16:16Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: ems_usb: ems_usb_read_bulk_callback(): fix URB memory leak\n\nFix similar memory leak as in commit 7352e1d5932a (\"can: gs_usb:\ngs_usb_receive_bulk_callback(): fix URB memory leak\").\n\nIn ems_usb_open(), the URBs for USB-in transfers are allocated, added to\nthe dev-\u003erx_submitted anchor and submitted. In the complete callback\nems_usb_read_bulk_callback(), the URBs are processed and resubmitted. In\nems_usb_close() the URBs are freed by calling\nusb_kill_anchored_urbs(\u0026dev-\u003erx_submitted).\n\nHowever, this does not take into account that the USB framework unanchors\nthe URB before the complete function is called. This means that once an\nin-URB has been completed, it is no longer anchored and is ultimately not\nreleased in ems_usb_close().\n\nFix the memory leak by anchoring the URB in the\nems_usb_read_bulk_callback() to the dev-\u003erx_submitted anchor.",
  "id": "GHSA-7g6w-2p3x-pf3p",
  "modified": "2026-02-06T18:30:30Z",
  "published": "2026-02-04T18:30:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23058"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ce73a0eb5a27070957b67fd74059b6da89cc516"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46a191ff7eeec33a2ccb2a1bfea34e18fbc5dc1a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61e6d3674c3d1da1475dc207b3e75c55d678d18e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/68c62b3e53901846b5f68c5a8bade72a5d9c0b87"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e2c71030dc464d437110bcfb367c493fd402bddb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e9410fdd4d5f7eaa6526d8c80e83029d7c86a8e8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f48eabd15194b216030b32445f44230df95f5fe0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-23058 (GCVE-0-2026-23058)

Vulnerability from cvelistv5 – Published: 2026-02-04 16:07 – Updated: 2026-02-09 08:37

Title

can: ems_usb: ems_usb_read_bulk_callback(): fix URB memory leak

Summary

In the Linux kernel, the following vulnerability has been resolved: can: ems_usb: ems_usb_read_bulk_callback(): fix URB memory leak Fix similar memory leak as in commit 7352e1d5932a ("can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak"). In ems_usb_open(), the URBs for USB-in transfers are allocated, added to the dev->rx_submitted anchor and submitted. In the complete callback ems_usb_read_bulk_callback(), the URBs are processed and resubmitted. In ems_usb_close() the URBs are freed by calling usb_kill_anchored_urbs(&dev->rx_submitted). However, this does not take into account that the USB framework unanchors the URB before the complete function is called. This means that once an in-URB has been completed, it is no longer anchored and is ultimately not released in ems_usb_close(). Fix the memory leak by anchoring the URB in the ems_usb_read_bulk_callback() to the dev->rx_submitted anchor.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/e2c71030dc464d437…
	https://git.kernel.org/stable/c/f48eabd15194b2160…
	https://git.kernel.org/stable/c/61e6d3674c3d1da14…
	https://git.kernel.org/stable/c/e9410fdd4d5f7eaa6…
	https://git.kernel.org/stable/c/46a191ff7eeec33a2…
	https://git.kernel.org/stable/c/68c62b3e53901846b…
	https://git.kernel.org/stable/c/0ce73a0eb5a270709…

Impacted products

Vendor

Product

Version

Linux

Affected: 702171adeed3607ee9603ec30ce081411e36ae42 , < e2c71030dc464d437110bcfb367c493fd402bddb (git)
Affected: 702171adeed3607ee9603ec30ce081411e36ae42 , < f48eabd15194b216030b32445f44230df95f5fe0 (git)
Affected: 702171adeed3607ee9603ec30ce081411e36ae42 , < 61e6d3674c3d1da1475dc207b3e75c55d678d18e (git)
Affected: 702171adeed3607ee9603ec30ce081411e36ae42 , < e9410fdd4d5f7eaa6526d8c80e83029d7c86a8e8 (git)
Affected: 702171adeed3607ee9603ec30ce081411e36ae42 , < 46a191ff7eeec33a2ccb2a1bfea34e18fbc5dc1a (git)
Affected: 702171adeed3607ee9603ec30ce081411e36ae42 , < 68c62b3e53901846b5f68c5a8bade72a5d9c0b87 (git)
Affected: 702171adeed3607ee9603ec30ce081411e36ae42 , < 0ce73a0eb5a27070957b67fd74059b6da89cc516 (git)

Linux

Affected: 2.6.32
Unaffected: 0 , < 2.6.32 (semver)
Unaffected: 5.10.249 , ≤ 5.10.* (semver)
Unaffected: 5.15.199 , ≤ 5.15.* (semver)
Unaffected: 6.1.162 , ≤ 6.1.* (semver)
Unaffected: 6.6.122 , ≤ 6.6.* (semver)
Unaffected: 6.12.68 , ≤ 6.12.* (semver)
Unaffected: 6.18.8 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/ems_usb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e2c71030dc464d437110bcfb367c493fd402bddb",
              "status": "affected",
              "version": "702171adeed3607ee9603ec30ce081411e36ae42",
              "versionType": "git"
            },
            {
              "lessThan": "f48eabd15194b216030b32445f44230df95f5fe0",
              "status": "affected",
              "version": "702171adeed3607ee9603ec30ce081411e36ae42",
              "versionType": "git"
            },
            {
              "lessThan": "61e6d3674c3d1da1475dc207b3e75c55d678d18e",
              "status": "affected",
              "version": "702171adeed3607ee9603ec30ce081411e36ae42",
              "versionType": "git"
            },
            {
              "lessThan": "e9410fdd4d5f7eaa6526d8c80e83029d7c86a8e8",
              "status": "affected",
              "version": "702171adeed3607ee9603ec30ce081411e36ae42",
              "versionType": "git"
            },
            {
              "lessThan": "46a191ff7eeec33a2ccb2a1bfea34e18fbc5dc1a",
              "status": "affected",
              "version": "702171adeed3607ee9603ec30ce081411e36ae42",
              "versionType": "git"
            },
            {
              "lessThan": "68c62b3e53901846b5f68c5a8bade72a5d9c0b87",
              "status": "affected",
              "version": "702171adeed3607ee9603ec30ce081411e36ae42",
              "versionType": "git"
            },
            {
              "lessThan": "0ce73a0eb5a27070957b67fd74059b6da89cc516",
              "status": "affected",
              "version": "702171adeed3607ee9603ec30ce081411e36ae42",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/ems_usb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.32"
            },
            {
              "lessThan": "2.6.32",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.249",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.199",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.162",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.122",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.68",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.249",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.199",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.162",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.122",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.68",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.8",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: ems_usb: ems_usb_read_bulk_callback(): fix URB memory leak\n\nFix similar memory leak as in commit 7352e1d5932a (\"can: gs_usb:\ngs_usb_receive_bulk_callback(): fix URB memory leak\").\n\nIn ems_usb_open(), the URBs for USB-in transfers are allocated, added to\nthe dev-\u003erx_submitted anchor and submitted. In the complete callback\nems_usb_read_bulk_callback(), the URBs are processed and resubmitted. In\nems_usb_close() the URBs are freed by calling\nusb_kill_anchored_urbs(\u0026dev-\u003erx_submitted).\n\nHowever, this does not take into account that the USB framework unanchors\nthe URB before the complete function is called. This means that once an\nin-URB has been completed, it is no longer anchored and is ultimately not\nreleased in ems_usb_close().\n\nFix the memory leak by anchoring the URB in the\nems_usb_read_bulk_callback() to the dev-\u003erx_submitted anchor."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-09T08:37:56.573Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e2c71030dc464d437110bcfb367c493fd402bddb"
        },
        {
          "url": "https://git.kernel.org/stable/c/f48eabd15194b216030b32445f44230df95f5fe0"
        },
        {
          "url": "https://git.kernel.org/stable/c/61e6d3674c3d1da1475dc207b3e75c55d678d18e"
        },
        {
          "url": "https://git.kernel.org/stable/c/e9410fdd4d5f7eaa6526d8c80e83029d7c86a8e8"
        },
        {
          "url": "https://git.kernel.org/stable/c/46a191ff7eeec33a2ccb2a1bfea34e18fbc5dc1a"
        },
        {
          "url": "https://git.kernel.org/stable/c/68c62b3e53901846b5f68c5a8bade72a5d9c0b87"
        },
        {
          "url": "https://git.kernel.org/stable/c/0ce73a0eb5a27070957b67fd74059b6da89cc516"
        }
      ],
      "title": "can: ems_usb: ems_usb_read_bulk_callback(): fix URB memory leak",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23058",
    "datePublished": "2026-02-04T16:07:41.337Z",
    "dateReserved": "2026-01-13T15:37:45.952Z",
    "dateUpdated": "2026-02-09T08:37:56.573Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-7G6W-2P3X-PF3P

CVE-2026-23058 (GCVE-0-2026-23058)

Tags

Sightings

Nomenclature