{"api_version":"1","generated_at":"2026-08-02T17:55:27+00:00","cve":"CVE-2026-64421","urls":{"html":"https://cve.report/CVE-2026-64421","api":"https://cve.report/api/cve/CVE-2026-64421.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64421","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64421"},"summary":{"title":"media: nxp: imx8-isi: Fix use-after-free on remove","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:26","updated_at":"2026-07-25 10:17:26"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/ef382a6baf0a95cf199fdf6bba2fd08e58b0a249","name":"https://git.kernel.org/stable/c/ef382a6baf0a95cf199fdf6bba2fd08e58b0a249","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d22fb719654bfde6f682c9f14629f5f9534175b7","name":"https://git.kernel.org/stable/c/d22fb719654bfde6f682c9f14629f5f9534175b7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c12a5b2261351cd3b03921ce4720332ff5184b50","name":"https://git.kernel.org/stable/c/c12a5b2261351cd3b03921ce4720332ff5184b50","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b670bf89824ede5d07d20bb9bfbafb754846081d","name":"https://git.kernel.org/stable/c/b670bf89824ede5d07d20bb9bfbafb754846081d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ba2aa5d325270cd965c44458c5ff5ab555e6af51","name":"https://git.kernel.org/stable/c/ba2aa5d325270cd965c44458c5ff5ab555e6af51","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64421","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64421","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf21f328fcafacf4f96e7a30ef9dceede1076378 d22fb719654bfde6f682c9f14629f5f9534175b7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf21f328fcafacf4f96e7a30ef9dceede1076378 ba2aa5d325270cd965c44458c5ff5ab555e6af51 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf21f328fcafacf4f96e7a30ef9dceede1076378 ef382a6baf0a95cf199fdf6bba2fd08e58b0a249 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf21f328fcafacf4f96e7a30ef9dceede1076378 c12a5b2261351cd3b03921ce4720332ff5184b50 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf21f328fcafacf4f96e7a30ef9dceede1076378 b670bf89824ede5d07d20bb9bfbafb754846081d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.4","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.4 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.4 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64421","cve":"CVE-2026-64421","epss":"0.001680000","percentile":"0.064570000","score_date":"2026-07-28","updated_at":"2026-07-29 00:05:33"},"legacy_qids":[]},"source_records":{"cve_program":{"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-rc1","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-rc1","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":"2026-07-25T08:50:59.926Z","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":"2026-07-25T08:50:59.926Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:26","lastModifiedDate":"2026-07-25 10:17:26","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64421","Ordinal":"1","Title":"media: nxp: imx8-isi: Fix use-after-free on remove","CVE":"CVE-2026-64421","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64421","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"media: nxp: imx8-isi: Fix use-after-free on remove"}]}}}