{
  "cveId": "CVE-2026-64421",
  "url": "https://patchblox.com/security/cve/CVE-2026-64421",
  "summary": "CVE-2026-64421 is fixed in 17 products on 1 platform, first by DEBIAN-CVE-2026-64421, released August 1, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  media: nxp: imx8-isi: Fix use-after-free on remo...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  media: nxp: imx8-isi: Fix use-after-free on remove  KASAN reports a slab-use-after-free in __media_entity_remove_link() during rmmod of imx8_isi:    BUG: KASAN: slab-use-after-free in __media_entity_remove_link\u002B0x608/0x650   Read of size 2 at addr ffff0000d47cb02a by task rmmod/724    Call trace:    __media_entity_remove_link\u002B0x608/0x650    __media_entity_remove_links\u002B0x78/0x144    __media_device_unregister_entity\u002B0x150/0x280    media_device_unregister_entity\u002B0x48/0x68    v4l2_device_unregister_subdev\u002B0x158/0x300    v4l2_async_unbind_subdev_one\u002B0x22c/0x358    v4l2_async_nf_unbind_all_subdevs\u002B0xfc/0x1c0    v4l2_async_nf_unregister\u002B0x5c/0x14c    mxc_isi_remove\u002B0x124/0x2a0 [imx8_isi]    Allocated by task 249:    __kmalloc_noprof\u002B0x27c/0x690    mxc_isi_crossbar_init\u002B0x22c/0x560 [imx8_isi]    Freed by task 724:    kfree\u002B0x1e4/0x5b0    mxc_isi_crossbar_cleanup\u002B0x34/0x80 [imx8_isi]    mxc_isi_remove\u002B0x11c/0x2a0 [imx8_isi]  The problem is that mxc_isi_remove() calls mxc_isi_crossbar_cleanup() before mxc_isi_v4l2_cleanup(). The crossbar cleanup frees the media entity pads, but the subsequent v4l2 cleanup still tries to remove media links that reference those pads.  Fix this by calling mxc_isi_v4l2_cleanup() before mxc_isi_crossbar_cleanup() to ensure all media entities are properly unregistered while the pads are still valid.",
  "published": "2026-07-25T10:17:26Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00125,
  "epssPercentile": 0.02219,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
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      "platform": "linux",
      "product": "dtb-aarch64",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.38.1",
      "fix": "OPENSUSE-SU-2026:21910-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21910-1",
      "released": "2026-09-22T15:26:20Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.38.1",
      "fix": "OPENSUSE-SU-2026:21910-1",
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      "released": "2026-09-22T15:26:20Z"
    },
    {
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      "fixedVersion": "6.4.0-150700.53.81.1",
      "fix": "SUSE-SU-2026:4254-1",
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      "released": "2026-10-07T22:31:36Z"
    },
    {
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      "fix": "SUSE-SU-2026:23902-1",
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      "released": "2026-09-22T14:23:31Z"
    },
    {
      "platform": "linux",
      "product": "kernel-azure",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.38.1",
      "fix": "OPENSUSE-SU-2026:21910-1",
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      "released": "2026-09-22T15:26:20Z"
    },
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      "released": "2026-10-07T22:31:36Z"
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      "fix": "OPENSUSE-SU-2026:21910-1",
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  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}