Skip to content
Heist/ feed
Back to feed
UnratedFix available

can: gs_usb: gs_usb_open/close(): fix memory leak

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: can: gs_usb: gs_usb_open/close(): fix memory leak The gs_usb driver appears to suffer from a malady common to many USB CAN adapter drivers in that it performs usb_alloc_coherent() to allocate a number of USB request blocks (URBs) for RX, and then later relies on usb_kill_anchored_urbs() to free them, but this doesn't actually free them. As a result, this may be leaking DMA memory that's been used by the driver. This commit is an adaptation of the techniques found in the esd_usb2 driver where a similar design pattern led to a memory leak. It explicitly frees the RX URBs and their DMA memory via a call to usb_free_coherent(). Since the RX URBs were allocated in the gs_can_open(), we remove them in gs_can_close() rather than in the disconnect function as was done in esd_usb2. For more information, see the 928150fad41b ("can: esd_usb2: fix memory leak").

Products
Kernel
Affected versions
Not specified
Fixed versions
4.14.288, 4.19.252, 4.9.323, 5.10.130, 5.15.54, 5.18.11, 5.4.205
CVEs
CVE-2022-49661
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 16:59 UTC · Revision 1

Source evidence

can: gs_usb: gs_usb_open/close(): fix memory leak

core-osv · Original source

Published 26 Feb 2025, 02:23 UTC

In the Linux kernel, the following vulnerability has been resolved: can: gs_usb: gs_usb_open/close(): fix memory leak The gs_usb driver appears to suffer from a malady common to many USB CAN adapter drivers in that it performs usb_alloc_coherent() to allocate a number of USB request blocks (URBs) for RX, and then later relies on usb_kill_anchored_urbs() to free them, but this doesn't actually free them. As a result, this may be leaking DMA memory that's been used by the driver. This commit is an adaptation of the techniques found in the esd_usb2 driver where a similar design pattern led to a memory leak. It explicitly frees the RX URBs and their DMA memory via a call to usb_free_coherent(). Since the RX URBs were allocated in the gs_can_open(), we remove them in gs_can_close() rather than in the disconnect function as was done in esd_usb2. For more information, see the 928150fad41b ("can: esd_usb2: fix memory leak").

osv:CVE-2022-49661

Kernel

Fixed versions: 4.9.323, 4.14.288, 4.19.252, 5.4.205, 5.10.130, 5.15.54, 5.18.11

Complete source record
{
  "id": "cb6aad1b99462fa1e24d00ec7183a77263b3212ff9783e3eb69282234a1c42bf",
  "url": "https://osv.dev/vulnerability/CVE-2022-49661",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "can: gs_usb: gs_usb_open/close(): fix memory leak",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: can: gs_usb: gs_usb_open/close(): fix memory leak The gs_usb driver appears to suffer from a malady common to many USB CAN adapter drivers in that it performs usb_alloc_coherent() to allocate a number of USB request blocks (URBs) for RX, and then later relies on usb_kill_anchored_urbs() to free them, but this doesn't actually free them. As a result, this may be leaking DMA memory that's been used by the driver. This commit is an adaptation of the techniques found in the esd_usb2 driver where a similar design pattern led to a memory leak. It explicitly frees the RX URBs and their DMA memory via a call to usb_free_coherent(). Since the RX URBs were allocated in the gs_can_open(), we remove them in gs_can_close() rather than in the disconnect function as was done in esd_usb2. For more information, see the 928150fad41b (\"can: esd_usb2: fix memory leak\").",
    "evidence": "osv:CVE-2022-49661",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "4.9.323",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "4.14.288",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "4.19.252",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.4.205",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.130",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.54",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.18.11",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-49661",
      "aliases": [
        "CVE-2022-49661"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d08e973a77d128b25e01a08c34d89593fdf222da"
                },
                {
                  "fixed": "339fa9f80d3b94177a7a459c6d115d3b56007d5a"
                },
                {
                  "fixed": "c1d806bc29ff7ffe0e2a023583c8720ed96cb0b0"
                },
                {
                  "fixed": "d91492638b054f4a359621ef216242be5973ed6b"
                },
                {
                  "fixed": "6f655b5e13fa4b27e915b6c209ac0da74fd75963"
                },
                {
                  "fixed": "d0b8e223998866b3e7b2895927d4e9689b0a80d8"
                },
                {
                  "fixed": "0e60230bc64355c80abe993d1719fdb318094e20"
                },
                {
                  "fixed": "ffb6cc6601ec7c8fa963dcf76025df4a02f2cf5c"
                },
                {
                  "fixed": "2bda24ef95c0311ab93bda00db40486acf30bd0a"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49661.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "3.16.0"
                },
                {
                  "fixed": "4.9.323"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.10.0"
                },
                {
                  "fixed": "4.14.288"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.15.0"
                },
                {
                  "fixed": "4.19.252"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.20.0"
                },
                {
                  "fixed": "5.4.205"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.5.0"
                },
                {
                  "fixed": "5.10.130"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.54"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "5.18.11"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49661.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.968509820Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0e60230bc64355c80abe993d1719fdb318094e20",
        "https://git.kernel.org/stable/c/2bda24ef95c0311ab93bda00db40486acf30bd0a",
        "https://git.kernel.org/stable/c/339fa9f80d3b94177a7a459c6d115d3b56007d5a",
        "https://git.kernel.org/stable/c/6f655b5e13fa4b27e915b6c209ac0da74fd75963",
        "https://git.kernel.org/stable/c/c1d806bc29ff7ffe0e2a023583c8720ed96cb0b0",
        "https://git.kernel.org/stable/c/d0b8e223998866b3e7b2895927d4e9689b0a80d8",
        "https://git.kernel.org/stable/c/d91492638b054f4a359621ef216242be5973ed6b",
        "https://git.kernel.org/stable/c/ffb6cc6601ec7c8fa963dcf76025df4a02f2cf5c",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49661.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49661",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49661.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-49661",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 505056,
  "published_at": "2025-02-26T02:23:58.352+00:00"
}