CVE-2024-26748

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux7733f6c32e36ff9d7adadf40001039bf219b1cbe < aad6132ae6e4809e375431f8defd1521985e44e7affected
LinuxLinux7733f6c32e36ff9d7adadf40001039bf219b1cbe < 1e204a8e9eb514e22a6567fb340ebb47df3f3a48affected
LinuxLinux7733f6c32e36ff9d7adadf40001039bf219b1cbe < 3a2a909942b5335b7ea66366d84261b3ed5f89c8affected
LinuxLinux7733f6c32e36ff9d7adadf40001039bf219b1cbe < 9a52b694b066f299d8b9800854a8503457a8b64caffected
LinuxLinux7733f6c32e36ff9d7adadf40001039bf219b1cbe < 70e8038813f9d3e72df966748ebbc40efe466019affected
LinuxLinux7733f6c32e36ff9d7adadf40001039bf219b1cbe < 92d20406a3d4ff3e8be667c79209dc9ed31df5b3affected
LinuxLinux7733f6c32e36ff9d7adadf40001039bf219b1cbe < 5fd9e45f1ebcd57181358af28506e8a661a260b3affected
LinuxLinux5.4affected
LinuxLinux0 < 5.4unaffected
LinuxLinux5.4.270 <= 5.4.*unaffected
LinuxLinux5.10.211 <= 5.10.*unaffected
LinuxLinux5.15.150 <= 5.15.*unaffected
LinuxLinux6.1.80 <= 6.1.*unaffected
LinuxLinux6.6.19 <= 6.6.*unaffected
LinuxLinux6.7.7 <= 6.7.*unaffected
LinuxLinux6.8 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References