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CVE-2026-98486

UnknownEPSS 0.20%

Last modified

CVE-2026-98486 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: net: ena: fix MMIO read buffer leak on probe failure ena_device_init() initializes the MMIO read mechanism with ena_com_mmio_reg_read_request_init(), which allocates a coherent DMA buffer for MMIO read responses. The normal removal path releases this buffer through ena_com_mmio_reg_read_request_destroy(). However, if ena_probe() fails after ena_device_init() succeeds, the error path destroys the admin resources and eventually frees ena_dev without destroying the MMIO read request, leaving the coherent DMA buffer allocated. Call ena_com_mmio_reg_read_request_destroy() in the probe error path before releasing the remaining device resources. This issue was found by manual code inspection.. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: net: ena: fix MMIO read buffer leak on probe failure ena_device_init() initializes the MMIO read mechanism with ena_com_mmio_reg_read_request_init(), which allocates a coherent DMA buffer for MMIO read responses. The normal removal path releases this buffer through ena_com_mmio_reg_read_request_destroy(). However, if ena_probe() fails after ena_device_init() succeeds, the error path destroys the admin resources and eventually frees ena_dev without destroying the MMIO read request, leaving the coherent DMA buffer allocated. Call ena_com_mmio_reg_read_request_destroy() in the probe error path before releasing the remaining device resources. This issue was found by manual code inspection.

Metrics

EPSS Probability
0.20%

9.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 1738cd3ed342294360d6a74d4e58800004bff854, < 9de940a3c5731be5a544f6f366576cc4dc073f7c; >= 1738cd3ed342294360d6a74d4e58800004bff854, < 4b90112826439149dcee20e73d02f25ae0e2a9fb; >= 1738cd3ed342294360d6a74d4e58800004bff854, < 0d31edc7ff1f7f265c11248819dfaf5a8274b209; >= 1738cd3ed342294360d6a74d4e58800004bff854, < a0f5fd7a285f44fa402242f26feddfe1d4a0fc6c; >= 1738cd3ed342294360d6a74d4e58800004bff854, < 7bd3e9a2d0c288e54f51df260d9433163f5fbc1e; >= 1738cd3ed342294360d6a74d4e58800004bff854, < 30ff01b4c7e419bb70f40f01dcd7f6af680808b3; >= 1738cd3ed342294360d6a74d4e58800004bff854, < 47785f9f638b064ce6e32e8e3b6f1ffd83849fc2; >= 1738cd3ed342294360d6a74d4e58800004bff854, < 9476b4468862927297c94c440863cd8ed1e7cc83
LinuxLinux4.9

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98486?
In the Linux kernel, the following vulnerability has been resolved: net: ena: fix MMIO read buffer leak on probe failure ena_device_init() initializes the MMIO read mechanism with ena_com_mmio_reg_read_request_init(), which allocates a coherent DMA buffer for MMIO read responses. The normal removal path releases this buffer through ena_com_mmio_reg_read_request_destroy(). However, if ena_probe() fails after ena_device_init() succeeds, the error path destroys the admin resources and eventually frees ena_dev without destroying the MMIO read request, leaving the coherent DMA buffer allocated. Call ena_com_mmio_reg_read_request_destroy() in the probe error path before releasing the remaining device resources. This issue was found by manual code inspection.
How severe is CVE-2026-98486?
Severity scoring for CVE-2026-98486 is pending analysis. The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98486?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST