GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-64421 (GCVE-0-2026-64421)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:50 – Updated: 2026-08-17 04:55
VLAI
Title
media: nxp: imx8-isi: Fix use-after-free on remove
Summary
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+0x608/0x650 Read of size 2 at addr ffff0000d47cb02a by task rmmod/724 Call trace: __media_entity_remove_link+0x608/0x650 __media_entity_remove_links+0x78/0x144 __media_device_unregister_entity+0x150/0x280 media_device_unregister_entity+0x48/0x68 v4l2_device_unregister_subdev+0x158/0x300 v4l2_async_unbind_subdev_one+0x22c/0x358 v4l2_async_nf_unbind_all_subdevs+0xfc/0x1c0 v4l2_async_nf_unregister+0x5c/0x14c mxc_isi_remove+0x124/0x2a0 [imx8_isi] Allocated by task 249: __kmalloc_noprof+0x27c/0x690 mxc_isi_crossbar_init+0x22c/0x560 [imx8_isi] Freed by task 724: kfree+0x1e4/0x5b0 mxc_isi_crossbar_cleanup+0x34/0x80 [imx8_isi] mxc_isi_remove+0x11c/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.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: cf21f328fcafacf4f96e7a30ef9dceede1076378 , < d22fb719654bfde6f682c9f14629f5f9534175b7 (git)
Affected: cf21f328fcafacf4f96e7a30ef9dceede1076378 , < ba2aa5d325270cd965c44458c5ff5ab555e6af51 (git)
Affected: cf21f328fcafacf4f96e7a30ef9dceede1076378 , < ef382a6baf0a95cf199fdf6bba2fd08e58b0a249 (git)
Affected: cf21f328fcafacf4f96e7a30ef9dceede1076378 , < c12a5b2261351cd3b03921ce4720332ff5184b50 (git)
Affected: cf21f328fcafacf4f96e7a30ef9dceede1076378 , < b670bf89824ede5d07d20bb9bfbafb754846081d (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.4 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d22fb719654bfde6f682c9f14629f5f9534175b7",
              "status": "affected",
              "version": "cf21f328fcafacf4f96e7a30ef9dceede1076378",
              "versionType": "git"
            },
            {
              "lessThan": "ba2aa5d325270cd965c44458c5ff5ab555e6af51",
              "status": "affected",
              "version": "cf21f328fcafacf4f96e7a30ef9dceede1076378",
              "versionType": "git"
            },
            {
              "lessThan": "ef382a6baf0a95cf199fdf6bba2fd08e58b0a249",
              "status": "affected",
              "version": "cf21f328fcafacf4f96e7a30ef9dceede1076378",
              "versionType": "git"
            },
            {
              "lessThan": "c12a5b2261351cd3b03921ce4720332ff5184b50",
              "status": "affected",
              "version": "cf21f328fcafacf4f96e7a30ef9dceede1076378",
              "versionType": "git"
            },
            {
              "lessThan": "b670bf89824ede5d07d20bb9bfbafb754846081d",
              "status": "affected",
              "version": "cf21f328fcafacf4f96e7a30ef9dceede1076378",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.145",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.97",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.4",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: nxp: imx8-isi: Fix use-after-free on remove\n\nKASAN reports a slab-use-after-free in __media_entity_remove_link()\nduring rmmod of imx8_isi:\n\n  BUG: KASAN: slab-use-after-free in __media_entity_remove_link+0x608/0x650\n  Read of size 2 at addr ffff0000d47cb02a by task rmmod/724\n\n  Call trace:\n   __media_entity_remove_link+0x608/0x650\n   __media_entity_remove_links+0x78/0x144\n   __media_device_unregister_entity+0x150/0x280\n   media_device_unregister_entity+0x48/0x68\n   v4l2_device_unregister_subdev+0x158/0x300\n   v4l2_async_unbind_subdev_one+0x22c/0x358\n   v4l2_async_nf_unbind_all_subdevs+0xfc/0x1c0\n   v4l2_async_nf_unregister+0x5c/0x14c\n   mxc_isi_remove+0x124/0x2a0 [imx8_isi]\n\n  Allocated by task 249:\n   __kmalloc_noprof+0x27c/0x690\n   mxc_isi_crossbar_init+0x22c/0x560 [imx8_isi]\n\n  Freed by task 724:\n   kfree+0x1e4/0x5b0\n   mxc_isi_crossbar_cleanup+0x34/0x80 [imx8_isi]\n   mxc_isi_remove+0x11c/0x2a0 [imx8_isi]\n\nThe problem is that mxc_isi_remove() calls mxc_isi_crossbar_cleanup()\nbefore mxc_isi_v4l2_cleanup(). The crossbar cleanup frees the media\nentity pads, but the subsequent v4l2 cleanup still tries to remove\nmedia links that reference those pads.\n\nFix this by calling mxc_isi_v4l2_cleanup() before\nmxc_isi_crossbar_cleanup() to ensure all media entities are properly\nunregistered while the pads are still valid."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T04:55:21.058Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d22fb719654bfde6f682c9f14629f5f9534175b7"
        },
        {
          "url": "https://git.kernel.org/stable/c/ba2aa5d325270cd965c44458c5ff5ab555e6af51"
        },
        {
          "url": "https://git.kernel.org/stable/c/ef382a6baf0a95cf199fdf6bba2fd08e58b0a249"
        },
        {
          "url": "https://git.kernel.org/stable/c/c12a5b2261351cd3b03921ce4720332ff5184b50"
        },
        {
          "url": "https://git.kernel.org/stable/c/b670bf89824ede5d07d20bb9bfbafb754846081d"
        }
      ],
      "title": "media: nxp: imx8-isi: Fix use-after-free on remove",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64421",
    "datePublished": "2026-07-25T08:50:59.926Z",
    "dateReserved": "2026-07-19T15:36:31.786Z",
    "dateUpdated": "2026-08-17T04:55:21.058Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-64421",
      "date": "2026-09-16",
      "epss": "0.00125",
      "percentile": "0.02548"
    },
    "microsoft_vex": {
      "current_release_date": "2026-07-27T14:42:28.000Z",
      "cve": "CVE-2026-64421",
      "id": "msrc_CVE-2026-64421",
      "initial_release_date": "2026-07-26T01:11:40.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "media: nxp: imx8-isi: Fix use-after-free on remove",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-64421.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-64421\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-25T10:17:26.097\",\"lastModified\":\"2026-09-04T15:16:38.903\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmedia: nxp: imx8-isi: Fix use-after-free on remove\\n\\nKASAN reports a slab-use-after-free in __media_entity_remove_link()\\nduring rmmod of imx8_isi:\\n\\n  BUG: KASAN: slab-use-after-free in __media_entity_remove_link+0x608/0x650\\n  Read of size 2 at addr ffff0000d47cb02a by task rmmod/724\\n\\n  Call trace:\\n   __media_entity_remove_link+0x608/0x650\\n   __media_entity_remove_links+0x78/0x144\\n   __media_device_unregister_entity+0x150/0x280\\n   media_device_unregister_entity+0x48/0x68\\n   v4l2_device_unregister_subdev+0x158/0x300\\n   v4l2_async_unbind_subdev_one+0x22c/0x358\\n   v4l2_async_nf_unbind_all_subdevs+0xfc/0x1c0\\n   v4l2_async_nf_unregister+0x5c/0x14c\\n   mxc_isi_remove+0x124/0x2a0 [imx8_isi]\\n\\n  Allocated by task 249:\\n   __kmalloc_noprof+0x27c/0x690\\n   mxc_isi_crossbar_init+0x22c/0x560 [imx8_isi]\\n\\n  Freed by task 724:\\n   kfree+0x1e4/0x5b0\\n   mxc_isi_crossbar_cleanup+0x34/0x80 [imx8_isi]\\n   mxc_isi_remove+0x11c/0x2a0 [imx8_isi]\\n\\nThe problem is that mxc_isi_remove() calls mxc_isi_crossbar_cleanup()\\nbefore mxc_isi_v4l2_cleanup(). The crossbar cleanup frees the media\\nentity pads, but the subsequent v4l2 cleanup still tries to remove\\nmedia links that reference those pads.\\n\\nFix this by calling mxc_isi_v4l2_cleanup() before\\nmxc_isi_crossbar_cleanup() to ensure all media entities are properly\\nunregistered while the pads are still valid.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"cf21f328fcafacf4f96e7a30ef9dceede1076378\",\"lessThan\":\"d22fb719654bfde6f682c9f14629f5f9534175b7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"cf21f328fcafacf4f96e7a30ef9dceede1076378\",\"lessThan\":\"ba2aa5d325270cd965c44458c5ff5ab555e6af51\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"cf21f328fcafacf4f96e7a30ef9dceede1076378\",\"lessThan\":\"ef382a6baf0a95cf199fdf6bba2fd08e58b0a249\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"cf21f328fcafacf4f96e7a30ef9dceede1076378\",\"lessThan\":\"c12a5b2261351cd3b03921ce4720332ff5184b50\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"cf21f328fcafacf4f96e7a30ef9dceede1076378\",\"lessThan\":\"b670bf89824ede5d07d20bb9bfbafb754846081d\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.4\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.4\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.97\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.40\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.4\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.4\",\"versionEndExcluding\":\"6.6.145\",\"matchCriteriaId\":\"DB2F447B-DC5F-4A4E-9EB8-22D2664EEDFA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.97\",\"matchCriteriaId\":\"05880CF6-5AD2-44E9-853A-6CE8318E76A5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.40\",\"matchCriteriaId\":\"67D87928-1419-4529-9201-42C059678CB4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"7.1.4\",\"matchCriteriaId\":\"6228DDD6-4557-4AA3-9F43-AB995D471E42\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/b670bf89824ede5d07d20bb9bfbafb754846081d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ba2aa5d325270cd965c44458c5ff5ab555e6af51\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c12a5b2261351cd3b03921ce4720332ff5184b50\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d22fb719654bfde6f682c9f14629f5f9534175b7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ef382a6baf0a95cf199fdf6bba2fd08e58b0a249\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-07-29T07:17:12+00:00",
      "cve": "CVE-2026-64421",
      "id": "CVE-2026-64421",
      "initial_release_date": "2026-07-25T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: media: nxp: imx8-isi: Fix use-after-free on remove",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64421.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-15T01:49:13Z",
      "cve": "CVE-2026-64421",
      "id": "CVE-2026-64421",
      "initial_release_date": "2026-07-25T15:59:39Z",
      "product_status:first_fixed": "65",
      "product_status:known_affected": "424",
      "product_status:known_not_affected": "325",
      "product_status:recommended": "46",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64421",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64421.json",
      "version": "7"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.