CVE-2026-80547 PUBLISHED

s390/vfio_ccw: Implement a crw lock

Assigner: Linux
Reserved: 26.08.2026 Published: 26.08.2026 Updated: 26.08.2026

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

s390/vfio_ccw: Implement a crw lock

Unlike the channel_program struct, which covers synchronous I/O submissions and asynchronous interrupts, the CRW region relies exclusively on asynchronous events coming from hardware.

Implement a lock to manage the list of those payloads, to ensure they are read cohesively.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 3f02cb2fd9d2d9e8762102886e3e4b51285797ee to 49fa26b0df009dc1f420980bd71780e70615b83b (excl.)
  • affected from 3f02cb2fd9d2d9e8762102886e3e4b51285797ee to 7902be374cbfc11c3435e1e87bf22195bf06a558 (excl.)
  • affected from 3f02cb2fd9d2d9e8762102886e3e4b51285797ee to c76c4ee72bfc3824f4f491f18ed0323bf2e2daf9 (excl.)
  • affected from 3f02cb2fd9d2d9e8762102886e3e4b51285797ee to 16b0798024c0e9117e395829ddbbe70981c79d9c (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 5.8 is affected
  • unaffected from 0 to 5.8 (excl.)
  • unaffected from 6.12.105 to 6.12.* (incl.)
  • unaffected from 6.18.46 to 6.18.* (incl.)
  • unaffected from 7.1.10 to 7.1.* (incl.)
  • unaffected from 7.2 to * (incl.)

References