CVE-2026-64421 (GCVE-0-2026-64421)
Vulnerability from cvelistv5
Published
2026-07-25 08:50
Modified
2026-08-17 04:55
Severity ?
VLAI Severity ?
EPSS score ?
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.
References
Impacted products
{
"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"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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