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CVE-2026-74461

i2c: imx: Cancel hrtimer before clearing slave pointer

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.15.216, 6.1.183, 6.6.151, 6.12.103, 6.18.44, and 1 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

In the Linux kernel, the following vulnerability has been resolved: i2c: imx: Cancel hrtimer before clearing slave pointer In i2c_imx_unreg_slave(), the slave pointer is set to NULL after disabling interrupts. However, a pending interrupt might already have started the hrtimer (i2c_imx_slave_timeout) before the pointer was cleared. If the hrtimer fires after i2c_imx->slave is set to NULL, the timer callback i2c_imx_slave_finish_op() will call i2c_imx_slave_event() with a NULL slave pointer, which results in a use-after-free / NULL pointer dereference. Fix by canceling the hrtimer and waiting for it to complete after disabling interrupts, before clearing the slave pointer.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From f7414cd6923fd7f78e57086fc964ba2dc25db5c1 · fixed in e3da77bdb4015051656bb472c295656bbea03b6f; From f7414cd6923fd7f78e57086fc964ba2dc25db5c1 · fixed in 470fe15fb3bb2eba6629be301ca7e991ee3cfb7e; From f7414cd6923fd7f78e57086fc964ba2dc25db5c1 · fixed in a8a1f9ac3d763e721586f15479ef9140b216ddf3; From f7414cd6923fd7f78e57086fc964ba2dc25db5c1 · fixed in 753060f2b77ff2f386addbd3ecadb95b9f90cddd; From f7414cd6923fd7f78e57086fc964ba2dc25db5c1 · fixed in affd62f5719a78135b7441aa49c8cab3c3b5e838; From f7414cd6923fd7f78e57086fc964ba2dc25db5c1 · fixed in dab4762ee7f3fd0a01980d5407ba48d0261d3bff; From f7414cd6923fd7f78e57086fc964ba2dc25db5c1 · fixed in 6ac7702b6cc2b94aaed9ef2d95bfbefcdc90061f

  • Linux Linux

    5.11

  • KernelLinux

    From 5.11.0 · fixed in 5.15.216; From 5.16.0 · fixed in 6.1.183; From 6.2.0 · fixed in 6.6.151; From 6.7.0 · fixed in 6.12.103; From 6.13.0 · fixed in 6.18.44; From 6.19.0 · fixed in 7.1.8

References 7

git.kernel.org