Linux Kernel up to 7.2.6/7.3-rc1 Nvme nvme_query_fdp_info nr_plids/plids race condition

Summaryinfo

A vulnerability, which was classified as very critical, was found in Linux Kernel up to 7.2.6/7.3-rc1. Affected by this vulnerability is the function nvme_query_fdp_info of the component Nvme. The manipulation of the argument nr_plids/plids results in race condition. This vulnerability is reported as CVE-2026-98153. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2.6/7.3-rc1. It has been classified as very critical. Affected is the function nvme_query_fdp_info of the component Nvme. The manipulation of the argument nr_plids/plids with an unknown input leads to a race condition vulnerability. CWE is classifying the issue as CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: nvme: fix racy access to FDP placement id array nvme_query_fdp_info() is called per-path and therefore prone to races. It populates head->nr_plids/head->plids for fdp registration. But nothing protects that pair from concurrent access - two paths scanning the same namespace can race to populate it. Avoid the race by moving this initialization work to nvme_alloc_ns_head() which is called once per shared namespace.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2026-98153 since 09/25/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/25/2026).

Upgrading to version 7.2.7 or 7.3-rc2 eliminates this vulnerability. Applying the patch e0a23e3c8c4c3ce11529fa70d2292b4e56d143ba/56e1c6bbe4bb084d7ecf61698afdf70be23dd35f is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 7.2.0
• 7.2.1
• 7.2.2
• 7.2.3
• 7.2.4
• 7.2.5
• 7.2.6
• 7.3-rc1

License

• open-source

Website

• Vendor: https://www.kernel.org/

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