--- title: "CVE-2026-90210: Linux Kernel - Use After Free" description: "Linux kernel contains a use-after-free vulnerability in bpf_trampoline_multi_attach_free caused by freeing old_image when it is still in use, letting attackers cause memory corruption, exploit requires kernel code execution." url: https://panop.io/threat-heartbeat/CVE-2026-90210/ --- # CVE-2026-90210 Linux Kernel - Use After Free Linux kernel contains a use-after-free vulnerability in bpf\_trampoline\_multi\_attach\_free caused by freeing old\_image when it is still in use, letting attackers cause memory corruption, exploit requires kernel code execution. CVSS base score 7.8 /10 High CISA KEV Not listed Public exploit None known EPSS 0.17% chance of exploitation in 30 days [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-90210) ## Details Type Use After Free Impact Use After Free 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. 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-2026-90210](https://nvd.nist.gov/vuln/detail/CVE-2026-90210) - [https://git.kernel.org/stable/c/0253073fb7d79a2dd2eae9581ea16db2aef395a6](https://git.kernel.org/stable/c/0253073fb7d79a2dd2eae9581ea16db2aef395a6) - [https://git.kernel.org/stable/c/65c3939656fd7848e9274faa07c26748b5bf049c](https://git.kernel.org/stable/c/65c3939656fd7848e9274faa07c26748b5bf049c) [← All CVEs](https://panop.io/threat-heartbeat/) ## 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 Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)