CVE-2026-68220

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

State: Published
Severity: Not scored
Published: Aug 10, 2026
Updated: Aug 17, 2026
Reserved: Jul 30, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	cf21f328fcafacf4f96e7a30ef9dceede1076378 to before 549dd1afce2cf79a826d1f9742effb4565d52871Affected cf21f328fcafacf4f96e7a30ef9dceede1076378 to before f04ec98605420e7c2c1ad6d2f6fb26692d4f218aAffected cf21f328fcafacf4f96e7a30ef9dceede1076378 to before 9e61258fbc3cfc053e4c2ed72254c2de76772354Affected cf21f328fcafacf4f96e7a30ef9dceede1076378 to before 9c5ddbabc31fda93a508d9b8f0c776a4a08e49f5Affected cf21f328fcafacf4f96e7a30ef9dceede1076378 to before 567418eedd25b3d86d489807682030b4b98b73d9Affected
LinuxLinux	6.4Affected before 6.4Not affected 6.6.148 through 6.6.Not affected 6.12.101 through 6.12.Not affected 6.18.42 through 6.18.Not affected 7.1.6 through 7.1.Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

cf21f328fcafacf4f96e7a30ef9dceede1076378 to before 549dd1afce2cf79a826d1f9742effb4565d52871Affected
cf21f328fcafacf4f96e7a30ef9dceede1076378 to before f04ec98605420e7c2c1ad6d2f6fb26692d4f218aAffected
cf21f328fcafacf4f96e7a30ef9dceede1076378 to before 9e61258fbc3cfc053e4c2ed72254c2de76772354Affected
cf21f328fcafacf4f96e7a30ef9dceede1076378 to before 9c5ddbabc31fda93a508d9b8f0c776a4a08e49f5Affected
cf21f328fcafacf4f96e7a30ef9dceede1076378 to before 567418eedd25b3d86d489807682030b4b98b73d9Affected

LinuxLinux

6.4Affected
before 6.4Not affected
6.6.148 through 6.6.*Not affected
6.12.101 through 6.12.*Not affected
6.18.42 through 6.18.*Not affected
7.1.6 through 7.1.*Not affected
7.2 and laterNot affected

References

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