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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-98486

net: ena: fix MMIO read buffer leak on probe failure

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 1738cd3ed342294360d6a74d4e58800004bff854 to < a0f5fd7a285f44fa402242f26feddfe1d4a0fc6caffected
  • 1738cd3ed342294360d6a74d4e58800004bff854 to < 7bd3e9a2d0c288e54f51df260d9433163f5fbc1eaffected
  • 1738cd3ed342294360d6a74d4e58800004bff854 to < 30ff01b4c7e419bb70f40f01dcd7f6af680808b3affected
  • 1738cd3ed342294360d6a74d4e58800004bff854 to < 47785f9f638b064ce6e32e8e3b6f1ffd83849fc2affected
  • 1738cd3ed342294360d6a74d4e58800004bff854 to < 9476b4468862927297c94c440863cd8ed1e7cc83affected

Linux Linux

Default version status: affected

  • 4.9affected
  • 0 to < 4.9unaffected
  • 6.6.160 to ≤ 6.6.*unaffected
  • 6.12.112 to ≤ 6.12.*unaffected
  • 6.18.55 to ≤ 6.18.*unaffected
  • 7.2.9 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References