Answer in brief
CVE-2026-64421 records a Unknown severity vulnerability in media: nxp: imx8-isi: Fix use-after-free on remove. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=cf21f328fcafacf4f96e7a30ef9dceede1076378 <d22fb719654bfde6f682c9f14629f5f9534175b7 || >=cf21f328fcafacf4f96e7a30ef9dceede1076378 <ba2aa5d325270cd965c44458c5ff5ab555e6af51 || >=cf21f328fcafacf4f96e7a30ef9dceede1076378 <ef382a6baf0a95cf199fdf6bba2fd08e58b0a249 || >=cf21f328fcafacf4f96e7a30ef9dceede1076378 <c12a5b2261351cd3b03921ce4720332ff5184b50 || >=cf21f328fcafacf4f96e7a30ef9dceede1076378 <b670bf89824ede5d07d20bb9bfbafb754846081d | d22fb719654bfde6f682c9f14629f5f9534175b7, ba2aa5d325270cd965c44458c5ff5ab555e6af51, ef382a6baf0a95cf199fdf6bba2fd08e58b0a249, c12a5b2261351cd3b03921ce4720332ff5184b50, b670bf89824ede5d07d20bb9bfbafb754846081d |
| Linux/Linuxgeneric | 6.4 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 11, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-64421 records a Unknown severity vulnerability in media: nxp: imx8-isi: Fix use-after-free on remove. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=cf21f328fcafacf4f96e7a30ef9dceede1076378 <d22fb719654bfde6f682c9f14629f5f9534175b7 || >=cf21f328fcafacf4f96e7a30ef9dceede1076378 <ba2aa5d325270cd965c44458c5ff5ab555e6af51 || >=cf21f328fcafacf4f96e7a30ef9dceede1076378 <ef382a6baf0a95cf199fdf6bba2fd08e58b0a249 || >=cf21f328fcafacf4f96e7a30ef9dceede1076378 <c12a5b2261351cd3b03921ce4720332ff5184b50 || >=cf21f328fcafacf4f96e7a30ef9dceede1076378 <b670bf89824ede5d07d20bb9bfbafb754846081d | d22fb719654bfde6f682c9f14629f5f9534175b7, ba2aa5d325270cd965c44458c5ff5ab555e6af51, ef382a6baf0a95cf199fdf6bba2fd08e58b0a249, c12a5b2261351cd3b03921ce4720332ff5184b50, b670bf89824ede5d07d20bb9bfbafb754846081d |
| Linux/Linuxgeneric | 6.4 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 11, 2026
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.
Quoted source text, attributed separately from HOL analysis.