Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-23271

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
20/03/2026
Last modified:
02/04/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> perf: Fix __perf_event_overflow() vs perf_remove_from_context() race<br /> <br /> Make sure that __perf_event_overflow() runs with IRQs disabled for all<br /> possible callchains. Specifically the software events can end up running<br /> it with only preemption disabled.<br /> <br /> This opens up a race vs perf_event_exit_event() and friends that will go<br /> and free various things the overflow path expects to be present, like<br /> the BPF program.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

References to Advisories, Solutions, and Tools