CVE-2024-26602

sched/membarrier: reduce the ability to hammer on sys_membarrier

Published Feb 24, 2024 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Description
In the Linux kernel, the following vulnerability has been resolved:

sched/membarrier: reduce the ability to hammer on sys_membarrier

On some systems, sys_membarrier can be very expensive, causing overall
slowdowns for everything. So put a lock on the path in order to
serialize the accesses to prevent the ability for this to be called at
too high of a frequency and saturate the machine.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3840-1 linux security update
Debian DLA Debian DLA DLA-3842-1 linux-5.10 security update
Debian DSA Debian DSA DSA-5658-1 linux security update
Debian DSA Debian DSA DSA-5681-1 linux security update
Ubuntu USN Ubuntu USN USN-6766-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6766-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6766-3 Linux kernel (AWS) vulnerabilities
Ubuntu USN Ubuntu USN USN-6767-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6767-2 Linux kernel (BlueField) vulnerabilities
Ubuntu USN Ubuntu USN USN-6795-1 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-6828-1 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-6895-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6895-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6895-3 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6895-4 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6900-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7069-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7069-2 Linux kernel (Azure) vulnerabilities
Weaknesses

Sources

Status
PUBLISHED
Assigner
Linux
Published
Updated
May 11, 2026, 8:00 PM
Reserved
Feb 19, 2024, 2:20 PM
Status
Modified
Published
Feb 26, 2024, 4:28 PM
Modified
Jun 17, 2026, 7:17 AM
Severity
Moderate
Public date
Feb 24, 2024, 12:00 AM