---
title: "CVE-2026-92507: Linux Kernel - Use After Free"
description: "Linux kernel contains a use after free vulnerability caused by improper synchronization in ib_dealloc_pd_user() during PD resource deallocation, letting attackers potentially access freed memory, exploit requires access to netlink path."
url: https://panop.io/threat-heartbeat/CVE-2026-92507/
---

# CVE-2026-92507 Linux Kernel - Use After Free

Linux kernel contains a use after free vulnerability caused by improper synchronization in ib\_dealloc\_pd\_user() during PD resource deallocation, letting attackers potentially access freed memory, exploit requires access to netlink path.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.16% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-92507)

## Details

Type

Use After Free

Impact

Use After Free, Denial Of Service

CVSS vector

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

Published

17 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for ib\_dealloc\_pd\_user() use-after-free.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-92507](https://nvd.nist.gov/vuln/detail/CVE-2026-92507)
- [https://git.kernel.org/stable/c/c06f2856a1d7e75a5ff247fc05224aa2452e7265](https://git.kernel.org/stable/c/c06f2856a1d7e75a5ff247fc05224aa2452e7265)
- [https://git.kernel.org/stable/c/d9c0daf9362aad2aeed1d9c5536d108772a8d31c](https://git.kernel.org/stable/c/d9c0daf9362aad2aeed1d9c5536d108772a8d31c)
- [https://git.kernel.org/stable/c/df0e9efe61ca706a07b1c9bf93fcb9032455efc4](https://git.kernel.org/stable/c/df0e9efe61ca706a07b1c9bf93fcb9032455efc4)
- [https://git.kernel.org/stable/c/66d65f36d39759e9f62dc746dc71d862f20f827f](https://git.kernel.org/stable/c/66d65f36d39759e9f62dc746dc71d862f20f827f)
- [https://git.kernel.org/stable/c/7647363fa02046da681acc3c827d9f301c06e0e7](https://git.kernel.org/stable/c/7647363fa02046da681acc3c827d9f301c06e0e7)
- [https://git.kernel.org/stable/c/8b90e701342275f414e36e7421c502237df241ad](https://git.kernel.org/stable/c/8b90e701342275f414e36e7421c502237df241ad)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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