CVE-2026-23108 (GCVE-0-2026-23108)

Vulnerability from cvelistv5 – Published: 2026-02-04 16:08 – Updated: 2026-02-06 16:33
VLAI?
Title
can: usb_8dev: usb_8dev_read_bulk_callback(): fix URB memory leak
Summary
In the Linux kernel, the following vulnerability has been resolved: can: usb_8dev: usb_8dev_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 usb_8dev_open() -> usb_8dev_start(), the URBs for USB-in transfers are allocated, added to the priv->rx_submitted anchor and submitted. In the complete callback usb_8dev_read_bulk_callback(), the URBs are processed and resubmitted. In usb_8dev_close() -> unlink_all_urbs() the URBs are freed by calling usb_kill_anchored_urbs(&priv->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 usb_8dev_read_bulk_callback() to the priv->rx_submitted anchor.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0024d8ad1639e32d717445c69ca813fd19c2a91c , < feb8243eaea7efd5279b19667d7189fd8654c87a (git)
Affected: 0024d8ad1639e32d717445c69ca813fd19c2a91c , < ef6e608e5ee71eca0cd3475c737e684cef24f240 (git)
Affected: 0024d8ad1639e32d717445c69ca813fd19c2a91c , < 60719661b4cbd7ffbed1a0e0fa3bbc82d8bd2be9 (git)
Affected: 0024d8ad1639e32d717445c69ca813fd19c2a91c , < 59ff56992bba28051ad67cd8cc7b0edfe7280796 (git)
Affected: 0024d8ad1639e32d717445c69ca813fd19c2a91c , < ea4a98e924164586066b39f29bfcc7cc9da108cd (git)
Affected: 0024d8ad1639e32d717445c69ca813fd19c2a91c , < 07e9373739c6388af9d99797cdb2e79dbbcbe92b (git)
Affected: 0024d8ad1639e32d717445c69ca813fd19c2a91c , < f7a980b3b8f80fe367f679da376cf76e800f9480 (git)
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    Linux Linux Affected: 3.9
Unaffected: 0 , < 3.9 (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-rc7 , ≤ * (original_commit_for_fix)
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{
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            "drivers/net/can/usb/usb_8dev.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: usb_8dev: usb_8dev_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 usb_8dev_open() -\u003e usb_8dev_start(), the URBs for USB-in transfers are\nallocated, added to the priv-\u003erx_submitted anchor and submitted. In the\ncomplete callback usb_8dev_read_bulk_callback(), the URBs are processed and\nresubmitted. In usb_8dev_close() -\u003e unlink_all_urbs() the URBs are freed by\ncalling usb_kill_anchored_urbs(\u0026priv-\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 usb_kill_anchored_urbs().\n\nFix the memory leak by anchoring the URB in the\nusb_8dev_read_bulk_callback() to the priv-\u003erx_submitted anchor."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-02-06T16:33:31.742Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "dateReserved": "2026-01-13T15:37:45.967Z",
    "dateUpdated": "2026-02-06T16:33:31.742Z",
    "state": "PUBLISHED"
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  }
}


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  • 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.
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