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can: kvaser_usb: kvaser_usb_read_bulk_callback(): fix URB memory leak

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: can: kvaser_usb: kvaser_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 kvaser_usb_set_{,data_}bittiming() -> kvaser_usb_setup_rx_urbs(), the URBs for USB-in transfers are allocated, added to the dev->rx_submitted anchor and submitted. In the complete callback kvaser_usb_read_bulk_callback(), the URBs are processed and resubmitted. In kvaser_usb_remove_interfaces() 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 usb_kill_anchored_urbs(). Fix the memory leak by anchoring the URB in the kvaser_usb_read_bulk_callback() to the dev->rx_submitted anchor.

Announced Source revision 1
Original source ↗

CVE-2026-23061

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-23061

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "080f40a6fa28dab299da7a652e444b1e2d9231e7",
        "lessThan": "d9d824582f2ec76459ffab449e9b05c7bc49645c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "080f40a6fa28dab299da7a652e444b1e2d9231e7",
        "lessThan": "40a3334ffda479c63e416e61ff086485e24401f7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "080f40a6fa28dab299da7a652e444b1e2d9231e7",
        "lessThan": "c1b39fa24c140bc616f51fef4175c1743e2bb132",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "080f40a6fa28dab299da7a652e444b1e2d9231e7",
        "lessThan": "7c308f7530bffafa994e0aa8dc651a312f4b9ff4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "080f40a6fa28dab299da7a652e444b1e2d9231e7",
        "lessThan": "94a7fc42e21c7d9d1c49778cd1db52de5df52a01",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "080f40a6fa28dab299da7a652e444b1e2d9231e7",
        "lessThan": "3b1a593eab941c3f32417896cc7df564191f2482",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "080f40a6fa28dab299da7a652e444b1e2d9231e7",
        "lessThan": "248e8e1a125fa875158df521b30f2cc7e27eeeaa",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/can/usb/kvaser_usb/kvaser_usb_core.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.8"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.8",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.249",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.199",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.162",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.122",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.68",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.8",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/can/usb/kvaser_usb/kvaser_usb_core.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-23061

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#39734 · Revision 1
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Publisher date
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