Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: media: i2c: ov5647: Initialize subdev before controls In ov5647_init_controls()… (CVE-2026-43312)
A vulnerability in the Linux kernel's media i2c ov5647 driver was resolved by correcting the initialization order of subdev and controls to prevent a potential segmentation fault. The issue arises because v4l2_get_subdevdata is called before the subdev is initialized, which can cause a segfault if an error condition is encountered. This vulnerability is part of a broader set of security issues fixed in the Linux kernel affecting multiple subsystems and architectures. A patch is available and included in updated Linux kernel packages for various Ubuntu releases. Users should apply the updates and reboot to ensure the fixes are applied.
AI Analysis
Technical Summary
The CVE-2026-43312 vulnerability in the Linux kernel's media i2c ov5647 driver is caused by improper initialization order in the ov5647_init_controls() function, where v4l2_get_subdevdata is called before the subdev is initialized by v4l2_i2c_subdev_init() in the probe. This can lead to a segmentation fault when accessing i2c_client if an error condition occurs. This flaw is one among many security issues addressed in recent Linux kernel updates affecting numerous subsystems and architectures. The vendor advisory from Ubuntu confirms that patches are available in updated kernel packages for multiple Ubuntu LTS releases and variants, requiring a system reboot and recompilation of third-party kernel modules due to ABI changes.
Potential Impact
The vulnerability can cause a segmentation fault (crash) in the Linux kernel when the affected driver encounters an error condition, potentially leading to denial of service. There is no indication of confidentiality or integrity impact. The CVSS score is 5.5 (medium severity) with the vector indicating local attack vector, low complexity, low privileges required, no user interaction, and impact limited to availability.
Mitigation Recommendations
A patch is available and included in updated Linux kernel packages for Ubuntu 22.04 LTS, 24.04 LTS, and related variants. Users should update their systems using standard package management tools and reboot to apply the fixes. Due to ABI changes, recompilation and reinstallation of any third-party kernel modules are required. Follow the vendor's update instructions and verify kernel package versions to ensure the vulnerability is remediated.
Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: media: i2c: ov5647: Initialize subdev before controls In ov5647_init_controls()… (CVE-2026-43312)
Description
A vulnerability in the Linux kernel's media i2c ov5647 driver was resolved by correcting the initialization order of subdev and controls to prevent a potential segmentation fault. The issue arises because v4l2_get_subdevdata is called before the subdev is initialized, which can cause a segfault if an error condition is encountered. This vulnerability is part of a broader set of security issues fixed in the Linux kernel affecting multiple subsystems and architectures. A patch is available and included in updated Linux kernel packages for various Ubuntu releases. Users should apply the updates and reboot to ensure the fixes are applied.
CVSS v3.1
Score 5.5medium
Affected software
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protected]~18.04.1?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.2?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]+cvm1.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]~20.04.3?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]?arch=source&distro=focalpkg:deb/ubuntu/[email protected]?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]?arch=source&distro=focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]?arch=source&distro=focalpkg:deb/ubuntu/[email 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protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]?arch=source&distro=resoluteRun on your own infrastructure? 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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The CVE-2026-43312 vulnerability in the Linux kernel's media i2c ov5647 driver is caused by improper initialization order in the ov5647_init_controls() function, where v4l2_get_subdevdata is called before the subdev is initialized by v4l2_i2c_subdev_init() in the probe. This can lead to a segmentation fault when accessing i2c_client if an error condition occurs. This flaw is one among many security issues addressed in recent Linux kernel updates affecting numerous subsystems and architectures. The vendor advisory from Ubuntu confirms that patches are available in updated kernel packages for multiple Ubuntu LTS releases and variants, requiring a system reboot and recompilation of third-party kernel modules due to ABI changes.
Potential Impact
The vulnerability can cause a segmentation fault (crash) in the Linux kernel when the affected driver encounters an error condition, potentially leading to denial of service. There is no indication of confidentiality or integrity impact. The CVSS score is 5.5 (medium severity) with the vector indicating local attack vector, low complexity, low privileges required, no user interaction, and impact limited to availability.
Mitigation Recommendations
A patch is available and included in updated Linux kernel packages for Ubuntu 22.04 LTS, 24.04 LTS, and related variants. Users should update their systems using standard package management tools and reboot to apply the fixes. Due to ABI changes, recompilation and reinstallation of any third-party kernel modules are required. Follow the vendor's update instructions and verify kernel package versions to ensure the vulnerability is remediated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-43312
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:16.04:LTS","Ubuntu:18.04:LTS","Ubuntu:20.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:Nvidia-BlueField:22.04:LTS","Ubuntu:Pro:FIPS-preview:22.04:LTS","Ubuntu:Pro:FIPS-updates:22.04:LTS","Ubuntu:Pro:Realtime:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:Nvidia-BlueField:24.04:LTS","Ubuntu:Pro:FIPS-updates:24.04:LTS","Ubuntu:Pro:Realtime:24.04:LTS","Ubuntu:25.10","Ubuntu:26.04:LTS"]
- Cvss Version
- 3.1
Threat ID: 6a5b614d2d1edb114c85d05a
Added to database: 07/18/2026, 11:19:41 UTC
Last enriched: 09/08/2026, 03:16:00 UTC
Last updated: 09/14/2026, 22:01:34 UTC
Views: 22
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