{
  "cveId": "CVE-2026-98677",
  "url": "https://patchblox.com/security/cve/CVE-2026-98677",
  "summary": "CVE-2026-98677 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-98677, released October 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "iio: adc: ad_sigma_delta: fix use-after-free on unbind",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  iio: adc: ad_sigma_delta: fix use-after-free on unbind  ad_sd_buffer_postenable() allocates sigma_delta-\u003Esamples_buf with devm_krealloc() at runtime, so its devres entry sits after all probe-time entries of the driver. devm resources are released in reverse allocation order, which means unbind frees samples_buf before iio_device_unregister() disables the buffers and detaches the trigger pollfunc. The data ready IRQ is still enabled at that point, so ad_sd_trigger_handler() can still run and memcpy() incoming samples into the freed samples_buf.  Fix this by preallocating the buffer in devm_ad_sd_setup_buffer_and_trigger(), before the triggered buffer and the IRQ are set up, so it is freed only after iio_device_unregister() has drained the trigger handler via free_irq(). Size it for the worst case of all sequencer slots being active; ad_sd_validate_scan_mask() already caps the number of active channels at num_slots.  This issue was found by an in-house static analysis tool.",
  "published": "2026-10-18T16:17:21Z",
  "severity": "Moderate",
  "cvss": 5.7,
  "epss": 0.00205,
  "epssPercentile": 0.10618,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98677",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.113-1",
      "fix": "DEBIAN-CVE-2026-98677",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98677",
      "released": "2026-10-19T16:27:52Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.10-1",
      "fix": "DEBIAN-CVE-2026-98677",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98677",
      "released": "2026-10-19T16:27:52Z"
    },
    {
      "platform": "linux",
      "product": "linux-6.12",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.12.113-1~deb12u1",
      "fix": "DEBIAN-CVE-2026-98677",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98677",
      "released": "2026-10-19T16:27:52Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T12:40:37Z"
}