Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: mailbox: zynq-ipi: fix error handling while device_register() fails If device_register() fails, it has two issues: 1. The name allocated by dev_set_name() is leaked. 2. The parent of device is not NULL, device_unregister() is called in zynqmp_ipi_free_mboxes(), it will lead a kernel crash because of removing not added device. Call put_device() to give up the reference, so the name is freed in kobject_cleanup(). Add device registered check in zynqmp_ipi_free_mboxes() to avoid null-ptr-deref.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 4981b82ba2ff87df6a711fcd7a233c615df5fc79 before b3a5c76f61e2b380e29dfc6705854ca1ee85501d; affected 4981b82ba2ff87df6a711fcd7a233c615df5fc79 before a39b4de0804f9fe0ae911b359ffd4afe7d9d933b; affected 4981b82ba2ff87df6a711fcd7a233c615df5fc79 before 4f05d8e2fb3ab702c2633a74571e1b31cb579985; affected 4981b82ba2ff87df6a711fcd7a233c615df5fc79 before f2d63cefc012cafe1b7651bbf3302f8bcd8bea4a; affected 4981b82ba2ff87df6a711fcd7a233c615df5fc79 before 3fcf079958c00d83c51e4f250abf2c77fe9cc1b9; affected 4981b82ba2ff87df6a711fcd7a233c615df5fc79 before a6792a0cdef0b1c2d77920246283a72537e60e94 |
| Linux / Linux | affected 5.1; unaffected 0 before 5.1; unaffected 5.4.229 through 5.4.*; unaffected 5.10.163 through 5.10.*; unaffected 5.15.86 through 5.15.*; unaffected 6.0.16 through 6.0.*; unaffected 6.1.2 through 6.1.*; unaffected 6.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/b3a5c76f61e2b380e29dfc6705854ca1ee85501d
- https://git.kernel.org/stable/c/a39b4de0804f9fe0ae911b359ffd4afe7d9d933b
- https://git.kernel.org/stable/c/4f05d8e2fb3ab702c2633a74571e1b31cb579985
- https://git.kernel.org/stable/c/f2d63cefc012cafe1b7651bbf3302f8bcd8bea4a
- https://git.kernel.org/stable/c/3fcf079958c00d83c51e4f250abf2c77fe9cc1b9
- https://git.kernel.org/stable/c/a6792a0cdef0b1c2d77920246283a72537e60e94