CVE-2026-64421

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64421", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.786Z", "datePublished": "2026-07-25T08:50:59.926Z", "dateUpdated": "2026-08-17T04:55:21.058Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:55:21.058Z"}, "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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c"], "versions": [{"version": "cf21f328fcafacf4f96e7a30ef9dceede1076378", "lessThan": "d22fb719654bfde6f682c9f14629f5f9534175b7", "status": "affected", "versionType": "git"}, {"version": "cf21f328fcafacf4f96e7a30ef9dceede1076378", "lessThan": "ba2aa5d325270cd965c44458c5ff5ab555e6af51", "status": "affected", "versionType": "git"}, {"version": "cf21f328fcafacf4f96e7a30ef9dceede1076378", "lessThan": "ef382a6baf0a95cf199fdf6bba2fd08e58b0a249", "status": "affected", "versionType": "git"}, {"version": "cf21f328fcafacf4f96e7a30ef9dceede1076378", "lessThan": "c12a5b2261351cd3b03921ce4720332ff5184b50", "status": "affected", "versionType": "git"}, {"version": "cf21f328fcafacf4f96e7a30ef9dceede1076378", "lessThan": "b670bf89824ede5d07d20bb9bfbafb754846081d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c"], "versions": [{"version": "6.4", "status": "affected"}, {"version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "7.2"}]}]}], "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"}}}}

{}

{"affected": [{"affectedData": [{"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"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "DB2F447B-DC5F-4A4E-9EB8-22D2664EEDFA", "versionEndExcluding": "6.6.145", "versionStartIncluding": "6.4", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "05880CF6-5AD2-44E9-853A-6CE8318E76A5", "versionEndExcluding": "6.12.97", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "67D87928-1419-4529-9201-42C059678CB4", "versionEndExcluding": "6.18.40", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6228DDD6-4557-4AA3-9F43-AB995D471E42", "versionEndExcluding": "7.1.4", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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."}], "id": "CVE-2026-64421", "lastModified": "2026-09-04T15:16:38.903", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-07-25T10:17:26.097", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: media: nxp: imx8-isi: Fix use-after-free on remove", "id": "2507237", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507237"}, "csaw": false, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's `imx8-isi` media driver. This use-after-free vulnerability occurs during the removal of the driver due to an incorrect order of cleanup operations. A local attacker could potentially exploit this to cause a denial of service or achieve arbitrary code execution."], "name": "CVE-2026-64421", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64421\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64421\nhttps://lore.kernel.org/linux-cve-announce/2026072534-CVE-2026-64421-6833@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cf21f328fcafacf4f96e7a30ef9dceede1076378,d22fb719654bfde6f682c9f14629f5f9534175b7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cf21f328fcafacf4f96e7a30ef9dceede1076378,ba2aa5d325270cd965c44458c5ff5ab555e6af51)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cf21f328fcafacf4f96e7a30ef9dceede1076378,c12a5b2261351cd3b03921ce4720332ff5184b50)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cf21f328fcafacf4f96e7a30ef9dceede1076378,b670bf89824ede5d07d20bb9bfbafb754846081d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cf21f328fcafacf4f96e7a30ef9dceede1076378,ef382a6baf0a95cf199fdf6bba2fd08e58b0a249)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.4"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.4)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.4,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-07-25T18:30:17.014294+00:00", "updated": "2026-09-04T22:45:04.119558+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}