CVE-2026-46296 PUBLISHED

spi: s3c64xx: fix NULL-deref on driver unbind

Assigner: Linux
Reserved: 13.05.2026 Published: 08.06.2026 Updated: 19.06.2026

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

spi: s3c64xx: fix NULL-deref on driver unbind

A change moving DMA channel allocation from probe() back to s3c64xx_spi_prepare_transfer() failed to remove the corresponding deallocation from remove().

Drop the bogus DMA channel release from remove() to avoid triggering a NULL-pointer dereference on driver unbind.

This issue was flagged by Sashiko when reviewing a controller deregistration fix.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from f52b03c707444c5a3d1a0b9c5724f93ddc3c588e to 29e219a18e21258bdb4ee12cecd0e9ec87d7e6a7 (excl.)
  • affected from f52b03c707444c5a3d1a0b9c5724f93ddc3c588e to 1108b8722b9ff0cdd3e8aa18d98244fcd93b6760 (excl.)
  • affected from f52b03c707444c5a3d1a0b9c5724f93ddc3c588e to 323a258f4b1916b5a3098618e036e033b2f2317f (excl.)
  • affected from f52b03c707444c5a3d1a0b9c5724f93ddc3c588e to 1b66f16a571a10ba8889ac471755c8af9c5b9266 (excl.)
  • affected from f52b03c707444c5a3d1a0b9c5724f93ddc3c588e to 22788b1a8611380b141e09a8896702e32d164238 (excl.)
  • affected from f52b03c707444c5a3d1a0b9c5724f93ddc3c588e to 45daacbead8a009844bd5dba6cfa731332184d17 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.0 is affected
  • unaffected from 0 to 6.0 (excl.)
  • unaffected from 6.1.176 to 6.1.* (incl.)
  • unaffected from 6.6.140 to 6.6.* (incl.)
  • unaffected from 6.12.88 to 6.12.* (incl.)
  • unaffected from 6.18.30 to 6.18.* (incl.)
  • unaffected from 7.0.7 to 7.0.* (incl.)
  • unaffected from 7.1 to * (incl.)

References