What’s Vulnerable › Vulnerabilities

CVE-2023-53697: nvdimm: Fix memleak of pmu attr_groups in unregister_nvdimm_pmu()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-22 · updated 2026-10-28

Description

In the Linux kernel, the following vulnerability has been resolved: nvdimm: Fix memleak of pmu attr_groups in unregister_nvdimm_pmu() Memory pointed by 'nd_pmu->pmu.attr_groups' is allocated in function 'register_nvdimm_pmu' and is lost after 'kfree(nd_pmu)' call in function 'unregister_nvdimm_pmu'.

Affected products

• Linux kernel: 5.18 — fixed in 6.6

How to fix

Upgrade to a fixed version: Linux kernel 6.6. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/16259c80542ee8945aaa39cfc6a1809bcdc08ffe
• https://git.kernel.org/stable/c/4999f2ec5fde7c45e3ecafda5b78560cc1c7bdb5
• https://git.kernel.org/stable/c/500a6ff9c2a81348fe0f04e2deb758145e8ab94e
• https://git.kernel.org/stable/c/85ae42c72142346645e63c33835da947dfa008b3

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