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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2024-26748

usb: cdns3: fix memory double free when handle zero packet

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 7733f6c32e36ff9d7adadf40001039bf219b1cbe to < aad6132ae6e4809e375431f8defd1521985e44e7affected
  • 7733f6c32e36ff9d7adadf40001039bf219b1cbe to < 1e204a8e9eb514e22a6567fb340ebb47df3f3a48affected
  • 7733f6c32e36ff9d7adadf40001039bf219b1cbe to < 3a2a909942b5335b7ea66366d84261b3ed5f89c8affected
  • 7733f6c32e36ff9d7adadf40001039bf219b1cbe to < 9a52b694b066f299d8b9800854a8503457a8b64caffected
  • 7733f6c32e36ff9d7adadf40001039bf219b1cbe to < 70e8038813f9d3e72df966748ebbc40efe466019affected
  • 7733f6c32e36ff9d7adadf40001039bf219b1cbe to < 92d20406a3d4ff3e8be667c79209dc9ed31df5b3affected
  • 7733f6c32e36ff9d7adadf40001039bf219b1cbe to < 5fd9e45f1ebcd57181358af28506e8a661a260b3affected

Linux Linux

Default version status: affected

  • 5.4affected
  • 0 to < 5.4unaffected
  • 5.4.270 to ≤ 5.4.*unaffected
  • 5.10.211 to ≤ 5.10.*unaffected
  • 5.15.150 to ≤ 5.15.*unaffected
  • 6.1.80 to ≤ 6.1.*unaffected
  • 6.6.19 to ≤ 6.6.*unaffected
  • 6.7.7 to ≤ 6.7.*unaffected
  • 6.8 to ≤ *unaffected

References