Linux Kernel up to 6.6.147/6.12.100/6.18.41/7.1.5 imx8-isi mxc_isi_crossbar_cleanup/mxc_isi_pipe_cleanup memory leak

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.54+

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 6.6.147/6.12.100/6.18.41/7.1.5. Affected by this issue is the function mxc_isi_crossbar_cleanup/mxc_isi_pipe_cleanup of the component imx8-isi. The manipulation leads to memory leak. This vulnerability is referenced as CVE-2026-68220. The attack can only be performed from a local environment. No exploit is available.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.6.147/6.12.100/6.18.41/7.1.5. It has been rated as problematic. This issue affects the function mxc_isi_crossbar_cleanup/mxc_isi_pipe_cleanup of the component imx8-isi. The manipulation with an unknown input leads to a memory leak vulnerability. Using CWE to declare the problem leads to CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. Impacted is availability. The summary by CVE is:

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.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2026-68220 since 07/30/2026. The exploitation is known to be easy. Attacking locally is a requirement. The exploitation requires an enhanced level of successful authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 6.6.148, 6.12.101, 6.18.42, 7.1.6 or 7.2-rc1 eliminates this vulnerability. Applying the patch 549dd1afce2cf79a826d1f9742effb4565d52871/f04ec98605420e7c2c1ad6d2f6fb26692d4f218a/9e61258fbc3cfc053e4c2ed72254c2de76772354/9c5ddbabc31fda93a508d9b8f0c776a4a08e49f5/567418eedd25b3d86d489807682030b4b98b73d9 is able to eliminate this problem.

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Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.148/6.12.101/6.18.42/7.1.6/7.2-rc1
Patch: 549dd1afce2cf79a826d1f9742effb4565d52871/f04ec98605420e7c2c1ad6d2f6fb26692d4f218a/9e61258fbc3cfc053e4c2ed72254c2de76772354/9c5ddbabc31fda93a508d9b8f0c776a4a08e49f5/567418eedd25b3d86d489807682030b4b98b73d9

Timelineinfo

07/30/2026 CVE reserved
08/10/2026 +11 days Advisory disclosed
08/10/2026 +0 days VulDB entry created
08/10/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-68220 (🔒)
GCVE (CVE): GCVE-0-2026-68220
GCVE (VulDB): GCVE-100-387575

Entryinfo

Created: 08/10/2026 16:20
Changes: 08/10/2026 16:20 (59)
Complete: 🔍
Cache ID: 216::103

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