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CVE-2026-93814

Linux: spi: core: Abort active target transfer on controller suspend

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 5% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in1cc84ca8599b8fa64014821bca453ebb3326c71eFixed versionCVE List
Published24 Sep 2026Updated 3 Oct 2026CVE List

What fixes it

  • 1cc84ca8599b8fa64014821bca453ebb3326c71eLinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

In the Linux kernel, the following vulnerability has been resolved:

spi: core: Abort active target transfer on controller suspend

When an SPI controller operating in target mode has a transfer in progress at the time of system suspend, the suspend path proceeds without aborting the ongoing transfer. This can leave the hardware in an inconsistent state, potentially causing the system to hang or fail to resume cleanly.

Fix this by invoking the controller's target_abort callback from spi_controller_suspend() when the controller is in target mode and the callback is registered. This ensures any active target transfer is cleanly terminated before the controller is suspended.

Text from CVE List

Affected versions 12

  • Linuxaffected: 6c364062bfed3c34490e85bea52ff6e2d4f0f281 before a75d9eb78c89d3fa8d503966c91a51f02eced768CVE List
  • Linuxaffected: 6c364062bfed3c34490e85bea52ff6e2d4f0f281 before 1cc84ca8599b8fa64014821bca453ebb3326c71eCVE List
  • Linuxaffected: 6c364062bfed3c34490e85bea52ff6e2d4f0f281 before b81ac605763c319ca9928a237818ab4e8ab7bb59CVE List
  • Linuxaffected: 6c364062bfed3c34490e85bea52ff6e2d4f0f281 before f6a0cafa265c8a4aed585d873747e3b88b146eedCVE List
  • Linuxaffected: 6c364062bfed3c34490e85bea52ff6e2d4f0f281 before c1bab046d4786c5b17aab7c5225bf0d4a2a2d19bCVE List
  • Linuxaffected: 4.13CVE List
  • Linuxunaffected: all versions before 4.13CVE List
  • Linuxunaffected: 6.1.189 through 6.1.*CVE List
  • Linuxunaffected: 6.6.158 through 6.6.*CVE List
  • Linuxunaffected: 6.12.111 through 6.12.*CVE List
  • Linuxunaffected: 6.18.53 through 6.18.*CVE List
  • Linuxunaffected: 7.2CVE List

References 5