CVE-2023-53116

nvmet: avoid potential UAF in nvmet_req_complete()

Description

In the Linux kernel, the following vulnerability has been resolved: nvmet: avoid potential UAF in nvmet_req_complete() An nvme target ->queue_response() operation implementation may free the request passed as argument. Such implementation potentially could result in a use after free of the request pointer when percpu_ref_put() is called in nvmet_req_complete(). Avoid such problem by using a local variable to save the sq pointer before calling __nvmet_req_complete(), thus avoiding dereferencing the req pointer after that function call.

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/e5d99b29012bbf0e86929403209723b2806500c1
https://git.kernel.org/stable/c/fafcb4b26393870c45462f9af6a48e581dbbcf7e
https://git.kernel.org/stable/c/04c394208831d5e0d5cfee46722eb0f033cd4083
https://git.kernel.org/stable/c/a6317235da8aa7cb97529ebc8121cc2a4c4c437a
https://git.kernel.org/stable/c/f1d5888a5efe345b63c430b256e95acb0a475642
https://git.kernel.org/stable/c/bcd535f07c58342302a2cd2bdd8894fe0872c8a9
https://git.kernel.org/stable/c/8ed9813871038b25a934b21ab76b5b7dbf44fc3a
https://git.kernel.org/stable/c/6173a77b7e9d3e202bdb9897b23f2a8afe7bf286

Frequently Asked Questions

What is the severity of CVE-2023-53116?: CVE-2023-53116 has not yet been assigned a CVSS score.
How to fix CVE-2023-53116?: To fix CVE-2023-53116, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-53116 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2023-53116 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-53116?: CVE-2023-53116 affects Linux Linux, Linux Linux.

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