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CVE-2024-26748

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

Description (CNA)

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 (CNA)

Vendor / productVersions
Linux / Linuxaffected 7733f6c32e36ff9d7adadf40001039bf219b1cbe before aad6132ae6e4809e375431f8defd1521985e44e7; affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe before 1e204a8e9eb514e22a6567fb340ebb47df3f3a48; affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe before 3a2a909942b5335b7ea66366d84261b3ed5f89c8; affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe before 9a52b694b066f299d8b9800854a8503457a8b64c; affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe before 70e8038813f9d3e72df966748ebbc40efe466019; affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe before 92d20406a3d4ff3e8be667c79209dc9ed31df5b3; affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe before 5fd9e45f1ebcd57181358af28506e8a661a260b3
Linux / Linuxaffected 5.4; unaffected 0 before 5.4; unaffected 5.4.270 through 5.4.*; unaffected 5.10.211 through 5.10.*; unaffected 5.15.150 through 5.15.*; unaffected 6.1.80 through 6.1.*; unaffected 6.6.19 through 6.6.*; unaffected 6.7.7 through 6.7.*; unaffected 6.8 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

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No references supplied.

CVE

No English description supplied.