CVE-2026-98486None▾ SunlitIn 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…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 20.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
Last analysed / modified upstream
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.
Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < a0f5fd7a285f44fa402242f26feddfe1d4a0fc6cLinux >= 1738cd3ed342294360d6a74d4e58800004bff854 < 7bd3e9a2d0c288e54f51df260d9433163f5fbc1eLinux >= 1738cd3ed342294360d6a74d4e58800004bff854 < 30ff01b4c7e419bb70f40f01dcd7f6af680808b3Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < 47785f9f638b064ce6e32e8e3b6f1ffd83849fc2Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < 9476b4468862927297c94c440863cd8ed1e7cc83Linux 4.9Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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