We use these services and cookies to improve your user experience. You may opt out if you wish, however, this may limit some features on this site.

Please see our statement on Data Privacy.

Zendesk (Helpdesk and Chat)
Bugpilot (Bug tracking)

Ok

THREATINT CVE Home CVE Diag Help
PUBLISHED

CVE-2024-26748

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

Reserved:2024-02-19
Published:2024-04-03
Updated:2024-04-03

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.

Product status

Default status
unaffected

7733f6c32e36 before aad6132ae6e4
affected

7733f6c32e36 before 1e204a8e9eb5
affected

7733f6c32e36 before 3a2a909942b5
affected

7733f6c32e36 before 9a52b694b066
affected

7733f6c32e36 before 70e8038813f9
affected

7733f6c32e36 before 92d20406a3d4
affected

7733f6c32e36 before 5fd9e45f1ebc
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

https://git.kernel.org/stable/c/aad6132ae6e4809e375431f8defd1521985e44e7

https://git.kernel.org/stable/c/1e204a8e9eb514e22a6567fb340ebb47df3f3a48

https://git.kernel.org/stable/c/3a2a909942b5335b7ea66366d84261b3ed5f89c8

https://git.kernel.org/stable/c/9a52b694b066f299d8b9800854a8503457a8b64c

https://git.kernel.org/stable/c/70e8038813f9d3e72df966748ebbc40efe466019

https://git.kernel.org/stable/c/92d20406a3d4ff3e8be667c79209dc9ed31df5b3

https://git.kernel.org/stable/c/5fd9e45f1ebcd57181358af28506e8a661a260b3

cve.org CVE-2024-26748

nvd.nist.gov CVE-2024-26748

Download JSON

Share this page
https://cve.threatint.com/CVE/CVE-2024-26748