Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: spi: spi-sprd-adi: Fix double free in probe error path The driver currently uses… (CVE-2026-23068)
A double-free vulnerability was identified and fixed in the Linux kernel's spi-sprd-adi driver. The issue arises from improper handling of the spi_controller structure during error paths in the probe function, leading to a double free of memory. This flaw could potentially cause system instability or crashes. The vulnerability has a CVSS score of 7.8, indicating a high severity impact on confidentiality, integrity, and availability. A patch is available and included in updated Linux kernel versions. Users are advised to update to the fixed versions and reboot to apply the changes.
AI Analysis
Technical Summary
The Linux kernel spi-sprd-adi driver improperly manages the spi_controller structure during the probe error path. It allocates the controller with spi_alloc_host() but registers it with devm_spi_register_controller(). If devm_register_restart_handler() fails, spi_controller_put() is called manually, but since the controller is registered via a devm function, the device core also calls spi_controller_put() automatically on probe failure. This results in a double-free of the spi_controller structure. The fix involves switching to devm_spi_alloc_host() and removing the manual spi_controller_put() call to prevent double freeing.
Potential Impact
The double-free vulnerability can lead to memory corruption, potentially causing system crashes or instability. Given the CVSS 3.1 score of 7.8 with high impact on confidentiality, integrity, and availability, exploitation could allow a local attacker with limited privileges to compromise system stability or escalate privileges. However, no known exploits are reported in the wild at this time.
Mitigation Recommendations
A patch is available and has been released by the vendor. Users should update their Linux kernel to the fixed versions listed in the Ubuntu security advisories and reboot their systems to apply the fixes. Due to an ABI change, recompilation and reinstallation of third-party kernel modules may be required. Follow the vendor's update instructions carefully.
Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: spi: spi-sprd-adi: Fix double free in probe error path The driver currently uses… (CVE-2026-23068)
Description
A double-free vulnerability was identified and fixed in the Linux kernel's spi-sprd-adi driver. The issue arises from improper handling of the spi_controller structure during error paths in the probe function, leading to a double free of memory. This flaw could potentially cause system instability or crashes. The vulnerability has a CVSS score of 7.8, indicating a high severity impact on confidentiality, integrity, and availability. A patch is available and included in updated Linux kernel versions. Users are advised to update to the fixed versions and reboot to apply the changes.
CVSS v3.1
Score 7.8high
Affected software
pkg:deb/ubuntu/[email protected]~16.04.1?arch=source&distro=xenialpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]~18.04.1?arch=source&distro=esm-infra/bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]~18.04.1?arch=source&distro=esm-infra/bionicpkg:deb/ubuntu/[email protected]~18.04.2?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]~18.04.1?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]~18.04.1?arch=source&distro=esm-infra/bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]~18.04.1?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]~18.04.1?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=bionicpkg: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=questingRun on your own infrastructure? 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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel spi-sprd-adi driver improperly manages the spi_controller structure during the probe error path. It allocates the controller with spi_alloc_host() but registers it with devm_spi_register_controller(). If devm_register_restart_handler() fails, spi_controller_put() is called manually, but since the controller is registered via a devm function, the device core also calls spi_controller_put() automatically on probe failure. This results in a double-free of the spi_controller structure. The fix involves switching to devm_spi_alloc_host() and removing the manual spi_controller_put() call to prevent double freeing.
Potential Impact
The double-free vulnerability can lead to memory corruption, potentially causing system crashes or instability. Given the CVSS 3.1 score of 7.8 with high impact on confidentiality, integrity, and availability, exploitation could allow a local attacker with limited privileges to compromise system stability or escalate privileges. However, no known exploits are reported in the wild at this time.
Mitigation Recommendations
A patch is available and has been released by the vendor. Users should update their Linux kernel to the fixed versions listed in the Ubuntu security advisories and reboot their systems to apply the fixes. Due to an ABI change, recompilation and reinstallation of third-party kernel modules may be required. Follow the vendor's update instructions carefully.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-23068
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:16.04:LTS","Ubuntu:18.04:LTS","Ubuntu:Pro: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"]
- Cvss Version
- 3.1
Threat ID: 6a5b635c2d1edb114c8b3128
Added to database: 07/18/2026, 11:28:28 UTC
Last enriched: 08/22/2026, 21:28:32 UTC
Last updated: 09/10/2026, 19:24:58 UTC
Views: 6
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