CVE-2022-49821

Summary

In the Linux kernel, the following vulnerability has been resolved: mISDN: fix possible memory leak in mISDN_dsp_element_register() Afer commit 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array"), the name of device is allocated dynamically, use put_device() to give up the reference, so that the name can be freed in kobject_cleanup() when the refcount is 0. The 'entry' is going to be freed in mISDN_dsp_dev_release(), so the kfree() is removed. list_del() is called in mISDN_dsp_dev_release(), so it need be initialized.

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/083a2c9ef82e184bdf0b9f9a1e5fc38d32afbb47 ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/083a2c9ef82e184bdf0b9f9a1e5fc38d32afbb47Patch
• https://git.kernel.org/stable/c/0f2c681900a01e3f23789bca26d88268c3d5b51dPatch
• https://git.kernel.org/stable/c/727ed7d28348c026c7ef4d852f3d0e5054d376e8Patch
• https://git.kernel.org/stable/c/7a05e3929668c8cfef495c69752a9e91fac4878fPatch
• https://git.kernel.org/stable/c/98a2ac1ca8fd6eca6867726fe238d06e75eb1acdPatch
• https://git.kernel.org/stable/c/b119bedbefb7dd9ed8bf8cb9f1056504250d610ePatch
• https://git.kernel.org/stable/c/bbd53d05c4c892080ef3b617eff4f57903acecb9Patch
• https://git.kernel.org/stable/c/d4b8394725079670be309f9a35ad88a8cbbaaefdPatch