CVE-2023-52740

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-52740
In the Linux kernel, the following vulnerability has been resolved: powerpc/64s/interrupt: Fix interrupt exit race with security mitigation switch The RFI and STF security mitigation options can flip the interrupt_exit_not_reentrant static branch condition concurrently with the interrupt exit code which tests that branch. Interrupt exit tests this condition to set MSR[EE|RI] for exit, then again in the case a soft-masked interrupt is found pending, to recover the MSR so the interrupt can be replayed before attempting to exit again. If the condition changes between these two tests, the MSR and irq soft-mask state will become corrupted, leading to warnings and possible crashes. For example, if the branch is initially true then false, MSR[EE] will be 0 but PACA_IRQ_HARD_DIS clear and EE may not get enabled, leading to warnings in irq_64.c.

4.7 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/2ea31e2e62bbc4d11c411eeb36f1b02841dbcab1 Patch
https://git.kernel.org/stable/c/6f097c24815e67909a1fcc2c605586d02babd673 Patch
https://git.kernel.org/stable/c/86f7e423933608d536015a0f2eb9e0338c1227e0 Patch
https://git.kernel.org/stable/c/2ea31e2e62bbc4d11c411eeb36f1b02841dbcab1 Patch
https://git.kernel.org/stable/c/6f097c24815e67909a1fcc2c605586d02babd673 Patch
https://git.kernel.org/stable/c/86f7e423933608d536015a0f2eb9e0338c1227e0 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc7:*:*:*:*:*:*
History

23 Sep 2025, 19:08

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 4.7
CPE cpe:2.3:o:linux:linux_kernel:6.2:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*
First Time Linux
Linux linux Kernel
CWE CWE-362
References () https://git.kernel.org/stable/c/2ea31e2e62bbc4d11c411eeb36f1b02841dbcab1 - () https://git.kernel.org/stable/c/2ea31e2e62bbc4d11c411eeb36f1b02841dbcab1 - Patch
References () https://git.kernel.org/stable/c/6f097c24815e67909a1fcc2c605586d02babd673 - () https://git.kernel.org/stable/c/6f097c24815e67909a1fcc2c605586d02babd673 - Patch
References () https://git.kernel.org/stable/c/86f7e423933608d536015a0f2eb9e0338c1227e0 - () https://git.kernel.org/stable/c/86f7e423933608d536015a0f2eb9e0338c1227e0 - Patch

21 Nov 2024, 08:40

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/2ea31e2e62bbc4d11c411eeb36f1b02841dbcab1 - () https://git.kernel.org/stable/c/2ea31e2e62bbc4d11c411eeb36f1b02841dbcab1 -
References () https://git.kernel.org/stable/c/6f097c24815e67909a1fcc2c605586d02babd673 - () https://git.kernel.org/stable/c/6f097c24815e67909a1fcc2c605586d02babd673 -
References () https://git.kernel.org/stable/c/86f7e423933608d536015a0f2eb9e0338c1227e0 - () https://git.kernel.org/stable/c/86f7e423933608d536015a0f2eb9e0338c1227e0 -
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: powerpc/64s/interrupt: corrige la ejecución de salida de interrupción con un interruptor de mitigación de seguridad. Las opciones de mitigación de seguridad RFI y STF pueden invertir la condición de rama estática interrupt_exit_not_reentrant al mismo tiempo que el código de salida de interrupción que prueba esa rama. . La salida de interrupción prueba esta condición para configurar MSR[EE|RI] para la salida, luego nuevamente en el caso de que se encuentre pendiente una interrupción enmascarada, para recuperar el MSR para que la interrupción pueda reproducirse antes de intentar salir nuevamente. Si la condición cambia entre estas dos pruebas, el estado de la máscara suave MSR e irq se dañará, lo que generará advertencias y posibles fallas. Por ejemplo, si la rama es inicialmente verdadera y luego falsa, MSR[EE] será 0 pero PACA_IRQ_HARD_DIS estará clara y es posible que EE no se habilite, lo que generará advertencias en irq_64.c.

21 May 2024, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-05-21 16:15

Updated : 2025-09-23 19:08

NVD link : CVE-2023-52740

Mitre link : CVE-2023-52740

CVE.ORG link : CVE-2023-52740

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')