CVE-2023-53116
Linux Kernel use-after-free
- Published2 May 2025
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.
CVSS 3.1 breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HAffected products
Remediation
- https://git.kernel.org/stable/c/04c394208831d5e0d5cfee46722eb0f033cd4083
- https://git.kernel.org/stable/c/6173a77b7e9d3e202bdb9897b23f2a8afe7bf286
- https://git.kernel.org/stable/c/8ed9813871038b25a934b21ab76b5b7dbf44fc3a
- https://git.kernel.org/stable/c/a6317235da8aa7cb97529ebc8121cc2a4c4c437a
- https://git.kernel.org/stable/c/bcd535f07c58342302a2cd2bdd8894fe0872c8a9
- https://git.kernel.org/stable/c/e5d99b29012bbf0e86929403209723b2806500c1
References
- https://git.kernel.org/stable/c/04c394208831d5e0d5cfee46722eb0f033cd4083
- https://git.kernel.org/stable/c/6173a77b7e9d3e202bdb9897b23f2a8afe7bf286
- https://git.kernel.org/stable/c/8ed9813871038b25a934b21ab76b5b7dbf44fc3a
- https://git.kernel.org/stable/c/a6317235da8aa7cb97529ebc8121cc2a4c4c437a
- https://git.kernel.org/stable/c/bcd535f07c58342302a2cd2bdd8894fe0872c8a9
- https://git.kernel.org/stable/c/e5d99b29012bbf0e86929403209723b2806500c1
- https://git.kernel.org/stable/c/f1d5888a5efe345b63c430b256e95acb0a475642
- https://git.kernel.org/stable/c/fafcb4b26393870c45462f9af6a48e581dbbcf7e
Related CVEs
Recent high-severity vulnerabilities sharing a weakness type.
Frequently asked
Is CVE-2023-53116 being actively exploited?
CVE-2023-53116 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.54%.
How severe is CVE-2023-53116?
CVE-2023-53116 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.54% probability of exploitation.
Which products are affected by CVE-2023-53116?
Affected products include Linux Kernel.
How do I fix CVE-2023-53116?
Upgrade affected software to a fixed version, for example Linux Kernel 4.19.279 or later, then confirm no affected versions remain in your inventory.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2023-53116 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.