What’s Vulnerable › Vulnerabilities

CVE-2022-50366: powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue

• Severity: high (CVSS 7.1 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: 2025-09-17 · updated 2026-06-17
• Weakness: CWE-125

Description

In the Linux kernel, the following vulnerability has been resolved: powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue When value < time_unit, the parameter of ilog2() will be zero and the return value is -1. u64(-1) is too large for shift exponent and then will trigger shift-out-of-bounds: shift exponent 18446744073709551615 is too large for 32-bit type 'int' Call Trace: rapl_compute_time_window_core rapl_write_data_raw set_time_window store_constraint_time_window_us

Affected products

• Linux kernel: before 4.9.331; from 4.10 before 4.14.296; from 4.15 before 4.19.262; from 4.20 before 5.4.220; from 5.5 before 5.10.150; from 5.11 before 5.15.75 — fixed in 4.14.296, 4.19.262, 4.9.331, 5.10.150, 5.15.75, 5.19.17

How to fix

Upgrade to a fixed version: Linux kernel 4.14.296, 4.19.262, 4.9.331, 5.10.150. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/139bbbd01114433b80fe59f5e1330615aadf9752
• https://git.kernel.org/stable/c/1d94af37565e4d3c26b0d63428e093a37d5b4c32
• https://git.kernel.org/stable/c/2d93540014387d1c73b9ccc4d7895320df66d01b
• https://git.kernel.org/stable/c/3eb0ba70376f6ee40fa843fc9cee49269370b0b3
• https://git.kernel.org/stable/c/42f79dbb9514f726ff21df25f09cb0693b0b2445
• https://git.kernel.org/stable/c/49a6ffdaed60f0eb52c198fafebc05994e16e305
• https://git.kernel.org/stable/c/4ebba43384722adbd325baec3a12c572d94488eb
• https://git.kernel.org/stable/c/6216b685b8f48ab7b721a6fd5acbf526b41c13e8
• https://git.kernel.org/stable/c/708b9abe1b4a2f050a483db4b7edfc446b13df1f

Get alerted when CVE-2022-50366 or the next vulnerability affects your stack