All vulnerabilities
CVE-2026-98656

Linux: iio: trigger: cancel reenable_work before freeing trigger

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 in882d0011c59ff8ac15188ec9ce071399ecfa10adAlso 2a57b9246cecd5dd797a42eb310d6c8816f26d9e, 5.16 and 1 moreCVE List
Published18 Oct 2026Updated 21 Oct 2026CVE List

What fixes it

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:

iio: trigger: cancel reenable_work before freeing trigger

iio_trigger_notify_done_atomic() defers ->reenable() into trig->reenable_work on the system workqueue, and the worker dereferences the owning trigger through container_of(). Nothing cancels this work before iio_trig_release() frees the trigger, so a worker armed by the last in-flight IRQ can outlive the free and touch freed memory.

Cancel it at the top of iio_trig_release(), which every free path reaches through the device core's final put_device().

Found by an in-house static analysis tool.

Text from CVE List

Affected versions 16

  • Linuxaffected: 9020ef659885f2622cfb386cc229b6d618362895 before ac5d26a46c90ff61fd574eff4e8f0d71c905828aCVE List
  • Linuxaffected: 9020ef659885f2622cfb386cc229b6d618362895 before cf513df1a2c75566cdc802d9da47f62e8d6cfd18CVE List
  • Linuxaffected: 9020ef659885f2622cfb386cc229b6d618362895 before e64703280ce7a23a43c27efebeb7da457c88bf5cCVE List
  • Linuxaffected: 9020ef659885f2622cfb386cc229b6d618362895 before 882d0011c59ff8ac15188ec9ce071399ecfa10adCVE List
  • Linuxaffected: 9020ef659885f2622cfb386cc229b6d618362895 before 2a57b9246cecd5dd797a42eb310d6c8816f26d9eCVE List
  • Linuxaffected: a18aeac73c0f692ba40964f5f56e182312ae843bCVE List
  • Linuxaffected: 2c5c948451d57596640b20887b06b523d376eb24CVE List
  • Linuxaffected: 5.15.17 before 5.16CVE List
  • Linuxaffected: 5.16.3 before 5.17CVE List
  • Linuxaffected: 5.17CVE List
  • Linuxunaffected: all versions before 5.17CVE List
  • Linuxunaffected: 6.6.160 through 6.6.*CVE List
  • Linuxunaffected: 6.12.113 through 6.12.*CVE List
  • Linuxunaffected: 6.18.56 through 6.18.*CVE List
  • Linuxunaffected: 7.2.10 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 5