CVE-2026-68220
Description
In the Linux kernel, the following vulnerability has been resolved: media: nxp: imx8-isi: Add missing v4l2_subdev_cleanup() in crossbar and pipe Both mxc_isi_crossbar_init() and mxc_isi_pipe_init() call v4l2_subdev_init_finalize() which allocates the subdev active state, but neither mxc_isi_crossbar_cleanup() nor mxc_isi_pipe_cleanup() calls v4l2_subdev_cleanup() to free it. This causes a memory leak on every rmmod, reported by kmemleak: unreferenced object 0xffff0000d06fc800 (size 192): comm "(udev-worker)", pid 254, jiffies 4294913455 backtrace (crc 36eeae58): kmemleak_alloc+0x34/0x40 __kvmalloc_node_noprof+0x5f8/0x7d8 __v4l2_subdev_state_alloc+0x1fc/0x30c __v4l2_subdev_init_finalize+0x178/0x368 Add the missing v4l2_subdev_cleanup() calls before media_entity_cleanup() in both crossbar and pipe cleanup paths.
How to fix
- Linux Linux549dd1afce2cf79a826d1f9742effb4565d52871, f04ec98605420e7c2c1ad6d2f6fb26692d4f218a, 9e61258fbc3cfc053e4c2ed72254c2de76772354, 9c5ddbabc31fda93a508d9b8f0c776a4a08e49f5, 567418eedd25b3d86d489807682030b4b98b73d9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | cf21f328fcafacf4f96e7a30ef9dceede1076378 ≤ v < 549dd1afce2cf79a826d1f9742effb4565d52871, cf21f328fcafacf4f96e7a30ef9dceede1076378 ≤ v < f04ec98605420e7c2c1ad6d2f6fb26692d4f218a, cf21f328fcafacf4f96e7a30ef9dceede1076378 ≤ v < 9e61258fbc3cfc053e4c2ed72254c2de76772354, cf21f328fcafacf4f96e7a30ef9dceede1076378 ≤ v < 9c5ddbabc31fda93a508d9b8f0c776a4a08e49f5, cf21f328fcafacf4f96e7a30ef9dceede1076378 ≤ v < 567418eedd25b3d86d489807682030b4b98b73d9, 6.4 | 549dd1afce2cf79a826d1f9742effb4565d52871, f04ec98605420e7c2c1ad6d2f6fb26692d4f218a, 9e61258fbc3cfc053e4c2ed72254c2de76772354, 9c5ddbabc31fda93a508d9b8f0c776a4a08e49f5, 567418eedd25b3d86d489807682030b4b98b73d9 |
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