CVE-2026-64421

media: nxp: imx8-isi: Fix use-after-free on remove

HIGH

7.8

CVSS Score

Published: July 25, 2026 at 08:50 AM UTC

Updated: September 4, 2026 at 03:36 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.8

Exploit prediction

EPSS 0.1%

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+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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

6.13 ≤ v < 6.18.406.19 ≤ v < 7.1.46.4 ≤ v < 6.12.976.4 ≤ v < 6.18.406.4 ≤ v < 6.6.1456.4 ≤ v < 7.1.46.4 ≤ v < 7.26.7 ≤ v < 6.12.976.4cf21f328fcafacf4f96e7a30ef9dceede1076378

Vendor states this is fixed in b670bf89824ede5d07d20bb9bfbafb754846081d (fixed)

Vendor states this is fixed in ba2aa5d325270cd965c44458c5ff5ab555e6af51 (fixed)

Vendor states this is fixed in c12a5b2261351cd3b03921ce4720332ff5184b50 (fixed)

Vendor states this is fixed in d22fb719654bfde6f682c9f14629f5f9534175b7 (fixed)

Vendor states this is fixed in ef382a6baf0a95cf199fdf6bba2fd08e58b0a249 (fixed)

Vendor states this is fixed in 6.12.97 (unaffected)

Vendor states this is fixed in 6.18.40 (unaffected)

Vendor states this is fixed in 6.4 (unaffected)

Vendor states this is fixed in 6.6.145 (unaffected)

Vendor states this is fixed in 7.1.4 (unaffected)

Vendor states this is fixed in 7.2 (unaffected)