Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: gadget: Fix NULL pointer dereference in dwc3_gadget_suspend In current scenario if Plug-out and Plug-In performed continuously there could be a chance while checking for dwc->gadget_driver in dwc3_gadget_suspend, a NULL pointer dereference may occur. Call Stack: CPU1: CPU2: gadget_unbind_driver dwc3_suspend_common dwc3_gadget_stop dwc3_gadget_suspend dwc3_disconnect_gadget CPU1 basically clears the variable and CPU2 checks the variable. Consider CPU1 is running and right before gadget_driver is cleared and in parallel CPU2 executes dwc3_gadget_suspend where it finds dwc->gadget_driver which is not NULL and resumes execution and then CPU1 completes execution. CPU2 executes dwc3_disconnect_gadget where it checks dwc->gadget_driver is already NULL because of which the NULL pointer deference occur.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 9772b47a4c2916d645c551228b6085ea24acbe5d before 88936ceab6b426f1312327e9ef849c215c6007a7; affected 9772b47a4c2916d645c551228b6085ea24acbe5d before 57e2e42ccd3cd6183228269715ed032f44536751; affected 9772b47a4c2916d645c551228b6085ea24acbe5d before c7ebd8149ee519d27232e6e4940e9c02071b568b; affected 9772b47a4c2916d645c551228b6085ea24acbe5d before 36695d5eeeefe5a64b47d0336e7c8fc144e78182; affected 9772b47a4c2916d645c551228b6085ea24acbe5d before 61a348857e869432e6a920ad8ea9132e8d44c316; affected 8cca5c85393a7a490d4d7942c24d73d29cc77b3e; affected df2ca3271569367352835f981618e284fdc4ca94; affected 3.16.81 before 3.17; affected 4.4.178 before 4.5 |
| Linux / Linux | affected 4.6; unaffected 0 before 4.6; unaffected 5.15.149 through 5.15.*; unaffected 6.1.79 through 6.1.*; unaffected 6.6.18 through 6.6.*; unaffected 6.7.6 through 6.7.*; unaffected 6.8 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/88936ceab6b426f1312327e9ef849c215c6007a7
- https://git.kernel.org/stable/c/57e2e42ccd3cd6183228269715ed032f44536751
- https://git.kernel.org/stable/c/c7ebd8149ee519d27232e6e4940e9c02071b568b
- https://git.kernel.org/stable/c/36695d5eeeefe5a64b47d0336e7c8fc144e78182
- https://git.kernel.org/stable/c/61a348857e869432e6a920ad8ea9132e8d44c316
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.
- https://git.kernel.org/stable/c/88936ceab6b426f1312327e9ef849c215c6007a7
- https://git.kernel.org/stable/c/57e2e42ccd3cd6183228269715ed032f44536751
- https://git.kernel.org/stable/c/c7ebd8149ee519d27232e6e4940e9c02071b568b
- https://git.kernel.org/stable/c/36695d5eeeefe5a64b47d0336e7c8fc144e78182
- https://git.kernel.org/stable/c/61a348857e869432e6a920ad8ea9132e8d44c316