CVE-2026-68220 PUBLISHED

media: nxp: imx8-isi: Add missing v4l2_subdev_cleanup() in crossbar and pipe

Assigner: Linux
Reserved: 30.07.2026 Published: 10.08.2026 Updated: 10.08.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from cf21f328fcafacf4f96e7a30ef9dceede1076378 to 549dd1afce2cf79a826d1f9742effb4565d52871 (excl.)
  • affected from cf21f328fcafacf4f96e7a30ef9dceede1076378 to f04ec98605420e7c2c1ad6d2f6fb26692d4f218a (excl.)
  • affected from cf21f328fcafacf4f96e7a30ef9dceede1076378 to 9e61258fbc3cfc053e4c2ed72254c2de76772354 (excl.)
  • affected from cf21f328fcafacf4f96e7a30ef9dceede1076378 to 9c5ddbabc31fda93a508d9b8f0c776a4a08e49f5 (excl.)
  • affected from cf21f328fcafacf4f96e7a30ef9dceede1076378 to 567418eedd25b3d86d489807682030b4b98b73d9 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.4 is affected
  • unaffected from 0 to 6.4 (excl.)
  • unaffected from 6.6.148 to 6.6.* (incl.)
  • unaffected from 6.12.101 to 6.12.* (incl.)
  • unaffected from 6.18.42 to 6.18.* (incl.)
  • unaffected from 7.1.6 to 7.1.* (incl.)
  • unaffected from 7.2-rc1 to * (incl.)

References