What’s Vulnerable › Vulnerabilities

CVE-2022-50327: ACPI: processor: idle: Check acpi_fetch_acpi_dev() return value

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-15 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: ACPI: processor: idle: Check acpi_fetch_acpi_dev() return value The return value of acpi_fetch_acpi_dev() could be NULL, which would cause a NULL pointer dereference to occur in acpi_device_hid(). [ rjw: Subject and changelog edits, added empty line after if () ]

Affected products

• Debian Linux: 11.0
• Linux kernel: from 4.8 before 5.4.297; from 5.5 before 5.10.241; from 5.11 before 5.15.190; from 5.16 before 6.0.16; from 6.1 before 6.1.2 — fixed in 5.10.241, 5.15.190, 5.4.297, 6.0.16, 6.1.2

How to fix

Upgrade to a fixed version: Linux kernel 5.10.241, 5.15.190, 5.4.297, 6.0.16. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2437513a814b3e93bd02879740a8a06e52e2cf7d
• https://git.kernel.org/stable/c/2ecd629c788bbfb96be058edade2e934d3763eaf
• https://git.kernel.org/stable/c/8e8b5f12ee4ab6f5d252c9ca062a4ada9554e6d9
• https://git.kernel.org/stable/c/ad1190744da9d812da55b76f2afce750afb0a3bd
• https://git.kernel.org/stable/c/b85f0e292f73f353eea915499604fbf50c8238b4
• https://git.kernel.org/stable/c/fdee7a0acc566c4194d40a501b8a1584e86cc208
• https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html

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