CVE-2026-93147 PUBLISHED

s390/bpf: Replace ly instruction with llgf

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

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

s390/bpf: Replace ly instruction with llgf

cpu_nr is a 32 bit value and BPF_REG_0 is a 64 bit register, when ly loads the cpu_nr into BPF_REG_0 it does not zero the upper bits, but llgf does.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 9012cf2491e3c5d28d098b0d6da804af82977032 to 88500a86ab79f01c568de6ed00f5b1c5c79f11d5 (excl.)
  • affected from 9012cf2491e3c5d28d098b0d6da804af82977032 to 5f6cc299938b561cb01e343bab7042611fcee12a (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 7.2 is affected
  • unaffected from 0 to 7.2 (excl.)
  • unaffected from 7.2.6 to 7.2.* (incl.)
  • unaffected from 7.3-rc1 to * (incl.)

References