// For flags

CVE-2024-26602

sched/membarrier: reduce the ability to hammer on sys_membarrier

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

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.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sched/membarrier: reduce la capacidad de martillar en sys_membarrier. En algunos sistemas, sys_membarrier puede ser muy costoso, provocando ralentizaciones generales en todo. Por lo tanto, bloquee la ruta para serializar los accesos y evitar que se llame a una frecuencia demasiado alta y sature la máquina.

A flaw was found in sys_membarrier in the Linux kernel in sched/membarrier in how a user calls it at too high of a frequency. This flaw allows a local user to saturate the machine.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-02-19 CVE Reserved
  • 2024-02-24 CVE Published
  • 2024-04-21 EPSS Updated
  • 2024-08-02 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 4.14 < 4.19.307
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 4.19.307"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 4.14 < 5.4.269
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 5.4.269"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 4.14 < 5.10.210
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 5.10.210"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 4.14 < 5.15.149
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 5.15.149"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 4.14 < 6.1.79
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 6.1.79"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 4.14 < 6.6.18
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 6.6.18"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 4.14 < 6.7.6
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 6.7.6"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 4.14 < 6.8
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 6.8"
en
Affected