CVE-2026-90428 PUBLISHED

iommu/tegra241-cmdqv: Don't run the error ISR before probe sets up vintfs

Assigner: Linux
Reserved: 11.09.2026 Published: 17.09.2026 Updated: 17.09.2026

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

iommu/tegra241-cmdqv: Don't run the error ISR before probe sets up vintfs

__tegra241_cmdqv_probe() requests the error IRQ before it has allocated the cmdqv->vintfs array and set cmdqv->num_vintfs. A CMDQV left enabled with a latched error across a kexec fires the IRQ as soon as it is requested, and tegra241_cmdqv_isr() then walks the uninitialized cmdqv->vintfs array.

Request the IRQ only after cmdqv->vintfs is allocated and zeroed, so that a latched interrupt firing early runs the ISR against a valid array of NULL slots that it safely skips.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 to b1605a56745f22670205f6561df5771bbbb62a99 (excl.)
  • affected from 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 to 2f627118b668659c6b195ac48beedb1bf8f53368 (excl.)
  • affected from 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 to a168254ff8db08f2292be3d8fcbd37d2bb8c3d2d (excl.)
  • affected from 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 to 5acd67ceb38debe2fbf70ea35e2dec9f7ab01bbd (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.12 is affected
  • unaffected from 0 to 6.12 (excl.)
  • unaffected from 6.12.110 to 6.12.* (incl.)
  • unaffected from 6.18.52 to 6.18.* (incl.)
  • unaffected from 7.2.6 to 7.2.* (incl.)
  • unaffected from 7.3-rc1 to * (incl.)

References