CVE-2026-93147

s390/bpf: Replace ly instruction with llgf

State: Published
Severity: 7.8 High
Published: Sep 17, 2026
Updated: Oct 19, 2026
Reserved: Sep 17, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	9012cf2491e3c5d28d098b0d6da804af82977032 to before 88500a86ab79f01c568de6ed00f5b1c5c79f11d5Affected 9012cf2491e3c5d28d098b0d6da804af82977032 to before 5f6cc299938b561cb01e343bab7042611fcee12aAffected
LinuxLinux	7.2Affected before 7.2Not affected 7.2.6 through 7.2.*Not affected 7.3 and laterNot affected

References

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