Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: r8a66597: avoid double free of ep0_req in probe error path If usb_add_gadget_udc() fails, r8a66597_probe() jumps to err_add_udc and frees ep0_req, then falls through to clean_up2 where ep0_req is freed again when it is non-NULL. Remove the redundant free from err_add_udc and keep the cleanup in clean_up2 so the request is released exactly once. Issue found using a prototype static analysis tool and confirmed by code review.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 776976a67ae25d18be42794fd783a50757402cbe before c9e93290ffe7db22a8131a5f5fd026335090fbbe; affected 776976a67ae25d18be42794fd783a50757402cbe before 7721cf32efa428bd9649f4a9b89fc85601df87de; affected 776976a67ae25d18be42794fd783a50757402cbe before f9c43246128a2dd0f2bbad71decf153910ce3606; affected 776976a67ae25d18be42794fd783a50757402cbe before 150d3f3c461345b6c9ae784912cf1e49c8e5ff6b; affected 776976a67ae25d18be42794fd783a50757402cbe before b2e68583c7c51eea2aafb8f1793e0d285c56ac82; affected 776976a67ae25d18be42794fd783a50757402cbe before 6648c470918371766f6d368113dd2a4faebac93f; affected 776976a67ae25d18be42794fd783a50757402cbe before 6be64cca6527f7fc99b05abf54f22db91bbc116f; affected 776976a67ae25d18be42794fd783a50757402cbe before 41d541e3718db01668a4cd29815ee4b3b55f76d2 |
| Linux / Linux | affected 3.17; unaffected 0 before 3.17; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/c9e93290ffe7db22a8131a5f5fd026335090fbbe
- https://git.kernel.org/stable/c/7721cf32efa428bd9649f4a9b89fc85601df87de
- https://git.kernel.org/stable/c/f9c43246128a2dd0f2bbad71decf153910ce3606
- https://git.kernel.org/stable/c/150d3f3c461345b6c9ae784912cf1e49c8e5ff6b
- https://git.kernel.org/stable/c/b2e68583c7c51eea2aafb8f1793e0d285c56ac82
- https://git.kernel.org/stable/c/6648c470918371766f6d368113dd2a4faebac93f
- https://git.kernel.org/stable/c/6be64cca6527f7fc99b05abf54f22db91bbc116f
- https://git.kernel.org/stable/c/41d541e3718db01668a4cd29815ee4b3b55f76d2