CVE-2022-50474

Summary

In the Linux kernel, the following vulnerability has been resolved:

macintosh: fix possible memory leak in macio_add_one_device()

Afer commit 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array"), the name of device is allocated dynamically. It needs to be freed when of_device_register() fails. Call put_device() to give up the reference that's taken in device_initialize(), so that it can be freed in kobject_cleanup() when the refcount hits 0.

macio device is freed in macio_release_dev(), so the kfree() can be removed.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < 3a866ff6fc2232c8e393cdb55ffb8ce947349e03affected
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < aa9054267366ff0a382d403d17728e21951ddbb9affected
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < 35858b87a943917fa30172aa4bf01ce7adbcb42caffected
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < b29a2f1dd33ae9b94821ab2f4d398b9081786748affected
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < 2ac0a7059b7bcbed35bfffa34a82c9a9e99638efaffected
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < 19ded60b40e86b0903c8d5bd0161437ed5107a8baffected
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < ca765257feb89dacf604ced9cd233db5f865dee0affected
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < 76837e7f6b30da72ad59f56291e22804a219e015affected
LinuxLinux1fa5ae857bb14f6046205171d98506d8112dd74e < 5ca86eae55a2f006e6c1edd2029b2cacb6979515affected
LinuxLinux2.6.30affected
LinuxLinux0 < 2.6.30unaffected
LinuxLinux4.9.337 <= 4.9.*unaffected
LinuxLinux4.14.303 <= 4.14.*unaffected
LinuxLinux4.19.270 <= 4.19.*unaffected
LinuxLinux5.4.229 <= 5.4.*unaffected
LinuxLinux5.10.163 <= 5.10.*unaffected
LinuxLinux5.15.86 <= 5.15.*unaffected
LinuxLinux6.0.16 <= 6.0.*unaffected
LinuxLinux6.1.2 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

References