CVE-2026-64421

CVE CVE-2026-64421EUVD EUVD-2026-48965Published 2026-07-25T08:50:59.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux cf21f328fcafacf4f96e7a30ef9dceede1076378 <c12a5b2261351cd3b03921ce4720332ff5184b50; patch: 6.6.145; patch: 7.1.4; cf21f328fcafacf4f96e7a30ef9dceede1076378 <b670bf89824ede5d07d20bb9bfbafb754846081d; patch: 6.12.97; cf21f328fcafacf4f96e7a30ef9dceede1076378 <ba2aa5d325270cd965c44458c5ff5ab555e6af51; patch: 0; cf21f328fcafacf4f96e7a30ef9dceede1076378 <ef382a6baf0a95cf199fdf6bba2fd08e58b0a249; patch: 6.18.40; 6.4; cf21f328fcafacf4f96e7a30ef9dceede1076378 <d22fb719654bfde6f682c9f14629f5f9534175b7; patch: 7.2-rc1

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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