In the Linux kernel, the following vulnerability has been resolved: drm/vc4: platform_get_irq_byname() returns an int platform_get_irq_byname() will… (CVE-2026-43072)
In the Linux kernel, the following vulnerability has been resolved: drm/vc4: platform_get_irq_byname() returns an int platform_get_irq_byname() will return a negative value if an error happens, so it should be checked and not just passed directly into devm_request_threaded_irq() hoping all will be ok.
AI Analysis
Technical Summary
The Linux kernel vulnerability CVE-2026-43072 involves the drm/vc4 driver where platform_get_irq_byname() returns an integer that may be negative on error. The function's return value was not properly validated before being passed to devm_request_threaded_irq(), potentially causing improper error handling. This flaw was fixed in Linux kernel versions 6.8.0-1061.64~22.04.1 and later. The vulnerability has a CVSS 3.1 score of 5.5 with local attack vector, low attack complexity, low privileges required, no user interaction, unchanged scope, no confidentiality or integrity impact, but with high impact on availability. Ubuntu has issued security notices USN-8488-1 and USN-8488-2 describing the fix and recommending system updates and reboots. The kernel update requires recompilation of third-party kernel modules due to ABI changes.
Potential Impact
The vulnerability can cause denial of service (availability impact) due to improper handling of error return values in the drm/vc4 driver. There is no impact on confidentiality or integrity. The attack requires local access with low privileges and no user interaction. No known exploits are reported in the wild.
Mitigation Recommendations
A patch is available and included in updated Linux kernel packages starting from version 6.8.0-1061.64~22.04.1 and later. Users should apply the official kernel updates provided by their Linux distribution, such as those from Ubuntu security notices USN-8488-1 and USN-8488-2. After updating, a system reboot is required to apply the changes. Due to ABI changes, recompilation and reinstallation of any third-party kernel modules is necessary. Follow vendor instructions carefully to ensure full remediation.
In the Linux kernel, the following vulnerability has been resolved: drm/vc4: platform_get_irq_byname() returns an int platform_get_irq_byname() will… (CVE-2026-43072)
Description
In the Linux kernel, the following vulnerability has been resolved: drm/vc4: platform_get_irq_byname() returns an int platform_get_irq_byname() will return a negative value if an error happens, so it should be checked and not just passed directly into devm_request_threaded_irq() hoping all will be ok.
CVSS v3.1
Score 5.5medium
Affected software
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protected]?arch=source&distro=resolutepkg:deb/ubuntu/[email protected]?arch=source&distro=resolutepkg:deb/ubuntu/[email protected]?arch=source&distro=resolutepkg: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 Linux kernel vulnerability CVE-2026-43072 involves the drm/vc4 driver where platform_get_irq_byname() returns an integer that may be negative on error. The function's return value was not properly validated before being passed to devm_request_threaded_irq(), potentially causing improper error handling. This flaw was fixed in Linux kernel versions 6.8.0-1061.64~22.04.1 and later. The vulnerability has a CVSS 3.1 score of 5.5 with local attack vector, low attack complexity, low privileges required, no user interaction, unchanged scope, no confidentiality or integrity impact, but with high impact on availability. Ubuntu has issued security notices USN-8488-1 and USN-8488-2 describing the fix and recommending system updates and reboots. The kernel update requires recompilation of third-party kernel modules due to ABI changes.
Potential Impact
The vulnerability can cause denial of service (availability impact) due to improper handling of error return values in the drm/vc4 driver. There is no impact on confidentiality or integrity. The attack requires local access with low privileges and no user interaction. No known exploits are reported in the wild.
Mitigation Recommendations
A patch is available and included in updated Linux kernel packages starting from version 6.8.0-1061.64~22.04.1 and later. Users should apply the official kernel updates provided by their Linux distribution, such as those from Ubuntu security notices USN-8488-1 and USN-8488-2. After updating, a system reboot is required to apply the changes. Due to ABI changes, recompilation and reinstallation of any third-party kernel modules is necessary. Follow vendor instructions carefully to ensure full remediation.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-43072
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:Pro:14.04:LTS","Ubuntu:Pro:16.04:LTS","Ubuntu:16.04:LTS","Ubuntu:Pro:FIPS:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:18.04:LTS","Ubuntu:Pro:FIPS-updates:18.04:LTS","Ubuntu:Pro:FIPS:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:20.04:LTS","Ubuntu:Pro:FIPS-updates:20.04:LTS","Ubuntu:Pro:FIPS: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: 6a5a036191ae9bcd3f85326d
Added to database: 07/17/2026, 10:26:41 UTC
Last enriched: 08/01/2026, 04:27:23 UTC
Last updated: 09/10/2026, 19:36:54 UTC
Views: 21
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