CVE-2026-98814
In the Linux kernel, the following vulnerability has been resolved: nvme: fix command effects log lifetime for multipath heads KASAN reported a use-after-free when an I/O passthrough command was…
Overview
CVE-2026-98814 is a known-severity vulnerability. It was published on October 18, 2026.
Technical description
In the Linux kernel, the following vulnerability has been resolved:
nvme: fix command effects log lifetime for multipath heads
KASAN reported a use-after-free when an I/O passthrough command was sent
through a multipath namespace head after the controller path that first
created the head had been removed:
BUG: KASAN: slab-use-after-free in nvme_command_effects+0x192/0x200 [nvme_core]
Read of size 4 at addr ffff888141b14400 by task nvme/19811
nvme_command_effects+0x192/0x200 [nvme_core]
nvme_cmd_allowed+0x7e/0x1b0 [nvme_core]
nvme_user_cmd.constprop.0+0x1b5/0x450 [nvme_core]
nvme_ns_head_chr_ioctl+0xf4/0x2a0 [nvme_core]
Move the log cache to the subsystem, with one entry per command set. Both
controllers and namespace heads hold subsystem references, keeping their
log pointers valid until subsystem release.
Remediation
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
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Frequently asked questions
What is CVE-2026-98814?
CVE-2026-98814 is a known-severity vulnerability. It was published on October 18, 2026.
How severe is CVE-2026-98814?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2026-98814?
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-98814?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-98814 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.