CVE-2024-26618

arm64/sme: Always exit sme_alloc() early with existing storage

Severity Score

"-"

*CVSS v-

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved:

arm64/sme: Always exit sme_alloc() early with existing storage

When sme_alloc() is called with existing storage and we are not flushing we
will always allocate new storage, both leaking the existing storage and
corrupting the state. Fix this by separating the checks for flushing and
for existing storage as we do for SVE.

Callers that reallocate (eg, due to changing the vector length) should
call sme_free() themselves.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: arm64/sme: salir siempre de sme_alloc() antes de tiempo con el almacenamiento existente. Cuando se llama a sme_alloc() con el almacenamiento existente y no estamos vaciando, siempre asignaremos nuevo almacenamiento, y ambos filtrarán el almacenamiento existente, almacenamiento y corrupción del estado. Solucione este problema separando los controles de descarga y de almacenamiento existente como lo hacemos con SVE. Las personas que llaman que se reasignan (por ejemplo, debido al cambio de la longitud del vector) deben llamar ellos mismos a sme_free().

*Credits: N/A

CVSS Scores

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-02-19 CVE Reserved
2024-02-29 CVE Published
2024-03-01 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (6)

URL	Tag	Source
https://git.kernel.org/stable/c/5d0a8d2fba50e9c07cde4aad7fba28c008b07a5b	Vuln. Introduced
https://git.kernel.org/stable/c/21614ba60883eb93b99a7ee4b41cb927f93b39ae	Vuln. Introduced
https://git.kernel.org/stable/c/e01af8e26c23a08625a3dd6c8c472a1752d76cce	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/569156e4fa347237f8fa2a7e935d860109c55ac4	2024-02-01
https://git.kernel.org/stable/c/814af6b4e6000e574e74d92197190edf07cc3680	2024-02-01
https://git.kernel.org/stable/c/dc7eb8755797ed41a0d1b5c0c39df3c8f401b3d9	2024-01-18

URL	Date	SRC

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"				>= 6.5 < 6.6.15 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.5 < 6.6.15"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.5 < 6.7.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.5 < 6.7.3"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.5 < 6.8 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.5 < 6.8"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.1.47 Search vendor "Linux" for product "Linux Kernel" and version "6.1.47"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.4.12 Search vendor "Linux" for product "Linux Kernel" and version "6.4.12"		en		Affected