CVE-2026-43460: Linux kernel · spi: rockchip-sfc: Fix double-free in remove() callback
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 7.8 High.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 8 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 25.10linuxpkg:deb/ubuntu/linux?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available that changes the driver to use spi_register_controller() in probe() instead of devm_spi_register_controller(), preventing the double-free. Users should apply the official kernel updates that include this fix. Since this is a kernel-level vulnerability, updating to the patched kernel versions is the recommended remediation.
Description
A double-free vulnerability in the Linux kernel's rockchip-sfc SPI driver has been fixed. The issue arises because the driver uses devm_spi_register_controller() which automatically unregisters the controller on device removal, but also manually calls spi_unregister_controller() in the remove() callback, causing a double-free. The fix involves switching to spi_register_controller() in probe() to ensure proper unregistration order before DMA buffer unmapping.
References
- ubuntu.com/security/CVE-2026-43460 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-43460 (opens in a new tab)
- git.kernel.org/linus/111e2863372c322e836e0c896f6dd9cf4ee08c71 (opens in a new tab)
- git.kernel.org/stable/c/111e2863372c322e836e0c896f6dd9cf4ee08c71 (opens in a new tab)
- git.kernel.org/stable/c/85fb53351e6a3b921357a2178671e847a087e400 (opens in a new tab)
- git.kernel.org/stable/c/b6051f2bdd4bd3dde85b68558edd3a6843489221 (opens in a new tab)