CVE-2024-26748 (GCVE-0-2024-26748)
Vulnerability from cvelistv5
Published
2024-04-03 17:00
Modified
2026-05-11 20:03
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: fix memory double free when handle zero packet 829 if (request->complete) { 830 spin_unlock(&priv_dev->lock); 831 usb_gadget_giveback_request(&priv_ep->endpoint, 832 request); 833 spin_lock(&priv_dev->lock); 834 } 835 836 if (request->buf == priv_dev->zlp_buf) 837 cdns3_gadget_ep_free_request(&priv_ep->endpoint, request); Driver append an additional zero packet request when queue a packet, which length mod max packet size is 0. When transfer complete, run to line 831, usb_gadget_giveback_request() will free this requestion. 836 condition is true, so cdns3_gadget_ep_free_request() free this request again. Log: [ 1920.140696][ T150] BUG: KFENCE: use-after-free read in cdns3_gadget_giveback+0x134/0x2c0 [cdns3] [ 1920.140696][ T150] [ 1920.151837][ T150] Use-after-free read at 0x000000003d1cd10b (in kfence-#36): [ 1920.159082][ T150] cdns3_gadget_giveback+0x134/0x2c0 [cdns3] [ 1920.164988][ T150] cdns3_transfer_completed+0x438/0x5f8 [cdns3] Add check at line 829, skip call usb_gadget_giveback_request() if it is additional zero length packet request. Needn't call usb_gadget_giveback_request() because it is allocated in this driver.
References
Impacted products
Vendor Product Version
Linux Linux Version: 7733f6c32e36ff9d7adadf40001039bf219b1cbe
Version: 7733f6c32e36ff9d7adadf40001039bf219b1cbe
Version: 7733f6c32e36ff9d7adadf40001039bf219b1cbe
Version: 7733f6c32e36ff9d7adadf40001039bf219b1cbe
Version: 7733f6c32e36ff9d7adadf40001039bf219b1cbe
Version: 7733f6c32e36ff9d7adadf40001039bf219b1cbe
Version: 7733f6c32e36ff9d7adadf40001039bf219b1cbe
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3: fix memory double free when handle zero packet\n\n829  if (request-\u003ecomplete) {\n830          spin_unlock(\u0026priv_dev-\u003elock);\n831          usb_gadget_giveback_request(\u0026priv_ep-\u003eendpoint,\n832                                    request);\n833          spin_lock(\u0026priv_dev-\u003elock);\n834  }\n835\n836  if (request-\u003ebuf == priv_dev-\u003ezlp_buf)\n837      cdns3_gadget_ep_free_request(\u0026priv_ep-\u003eendpoint, request);\n\nDriver append an additional zero packet request when queue a packet, which\nlength mod max packet size is 0. When transfer complete, run to line 831,\nusb_gadget_giveback_request() will free this requestion. 836 condition is\ntrue, so cdns3_gadget_ep_free_request() free this request again.\n\nLog:\n\n[ 1920.140696][  T150] BUG: KFENCE: use-after-free read in cdns3_gadget_giveback+0x134/0x2c0 [cdns3]\n[ 1920.140696][  T150]\n[ 1920.151837][  T150] Use-after-free read at 0x000000003d1cd10b (in kfence-#36):\n[ 1920.159082][  T150]  cdns3_gadget_giveback+0x134/0x2c0 [cdns3]\n[ 1920.164988][  T150]  cdns3_transfer_completed+0x438/0x5f8 [cdns3]\n\nAdd check at line 829, skip call usb_gadget_giveback_request() if it is\nadditional zero length packet request. Needn\u0027t call\nusb_gadget_giveback_request() because it is allocated in this driver."
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    "dateUpdated": "2026-05-11T20:03:24.389Z",
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