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THREATINT
PUBLISHED

CVE-2024-26748

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



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.

Reserved 2024-02-19 | Published 2024-04-03 | Updated 2024-12-19 | Assigner Linux

Product status

Default status
unaffected

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
affected

Default status
affected

5.4
affected

Any version before 5.4
unaffected

5.4.270
unaffected

5.10.211
unaffected

5.15.150
unaffected

6.1.80
unaffected

6.6.19
unaffected

6.7.7
unaffected

6.8
unaffected

References

git.kernel.org/...c/aad6132ae6e4809e375431f8defd1521985e44e7

git.kernel.org/...c/1e204a8e9eb514e22a6567fb340ebb47df3f3a48

git.kernel.org/...c/3a2a909942b5335b7ea66366d84261b3ed5f89c8

git.kernel.org/...c/9a52b694b066f299d8b9800854a8503457a8b64c

git.kernel.org/...c/70e8038813f9d3e72df966748ebbc40efe466019

git.kernel.org/...c/92d20406a3d4ff3e8be667c79209dc9ed31df5b3

git.kernel.org/...c/5fd9e45f1ebcd57181358af28506e8a661a260b3

cve.org (CVE-2024-26748)

nvd.nist.gov (CVE-2024-26748)

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