CVE-2024-26894

ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit()

Severity Score

6.0

*CVSS v3.1

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:

ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit()

After unregistering the CPU idle device, the memory associated with
it is not freed, leading to a memory leak:

unreferenced object 0xffff896282f6c000 (size 1024):
comm "swapper/0", pid 1, jiffies 4294893170
hex dump (first 32 bytes):
00 00 00 00 0b 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace (crc 8836a742):
[<ffffffff993495ed>] kmalloc_trace+0x29d/0x340
[<ffffffff9972f3b3>] acpi_processor_power_init+0xf3/0x1c0
[<ffffffff9972d263>] __acpi_processor_start+0xd3/0xf0
[<ffffffff9972d2bc>] acpi_processor_start+0x2c/0x50
[<ffffffff99805872>] really_probe+0xe2/0x480
[<ffffffff99805c98>] __driver_probe_device+0x78/0x160
[<ffffffff99805daf>] driver_probe_device+0x1f/0x90
[<ffffffff9980601e>] __driver_attach+0xce/0x1c0
[<ffffffff99803170>] bus_for_each_dev+0x70/0xc0
[<ffffffff99804822>] bus_add_driver+0x112/0x210
[<ffffffff99807245>] driver_register+0x55/0x100
[<ffffffff9aee4acb>] acpi_processor_driver_init+0x3b/0xc0
[<ffffffff990012d1>] do_one_initcall+0x41/0x300
[<ffffffff9ae7c4b0>] kernel_init_freeable+0x320/0x470
[<ffffffff99b231f6>] kernel_init+0x16/0x1b0
[<ffffffff99042e6d>] ret_from_fork+0x2d/0x50

Fix this by freeing the CPU idle device after unregistering it.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ACPI: procesador_idle: corrige la pérdida de memoria en acpi_processor_power_exit() Después de cancelar el registro del dispositivo de CPU inactivo, la memoria asociada con él no se libera, lo que genera una pérdida de memoria: objeto sin referencia 0xffff896282f6c000 (tamaño 1024): comunicación "swapper/0", pid 1, santiamén 4294893170 volcado hexadecimal (primeros 32 bytes): 00 00 00 00 0b 00 00 00 00 00 00 00 00 00 00 00 ........... ..... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ retroceso (crc 8836a742): [] kmalloc_trace+ 0x29d/0x340 [] acpi_processor_power_init+0xf3/0x1c0 [] __acpi_processor_start+0xd3/0xf0 [] acpi_processor_start+0x2c/0x50 [] realmente_probe+0xe2/0x480 [] __driver_probe_device+ 0x78/0x160 [] driver_probe_device+0x1f/0x90 [] __driver_attach+0xce/0x1c0 [] bus_for_each_dev+0x70/0xc0 [] bus_add_driver+0x112/0x210 [] driver_register+ 0x55/0x100 [] acpi_processor_driver_init+0x3b/0xc0 [] do_one_initcall+0x41/0x300 [] kernel_init_freeable+0x320/0x470 [] kernel_init+0x16/0x1b0 [] ret_from_fork+ 0x2d/0x50 Solucione este problema liberando el dispositivo de CPU inactivo después de cancelar su registro.

*Credits: N/A

CVSS Scores

CISAv3.1 6.0

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-02-19 CVE Reserved
2024-04-17 CVE Published
2024-04-18 EPSS Updated
2024-12-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-401: Missing Release of Memory after Effective Lifetime
CWE-770: Allocation of Resources Without Limits or Throttling

CAPEC

References (14)

URL	Tag	Source
https://git.kernel.org/stable/c/3d339dcbb56d8d70c1b959aff87d74adc3a84eea	Vuln. Introduced
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/d351bcadab6caa6d8ce7159ff4b77e2da35c09fa	2024-03-26
https://git.kernel.org/stable/c/ea96bf3f80625cddba1391a87613356b1b45716d	2024-03-26
https://git.kernel.org/stable/c/c2a30c81bf3cb9033fa9f5305baf7c377075e2e5	2024-03-26
https://git.kernel.org/stable/c/1cbaf4c793b0808532f4e7b40bc4be7cec2c78f2	2024-03-26
https://git.kernel.org/stable/c/fad9bcd4d754cc689c19dc04d2c44b82c1a5d6c8	2024-03-26
https://git.kernel.org/stable/c/3d48e5be107429ff5d824e7f2a00d1b610d36fbc	2024-03-26
https://git.kernel.org/stable/c/8d14a4d0afb49a5b8535d414c782bb334860e73e	2024-03-26
https://git.kernel.org/stable/c/cd5c2d0b09d5b6d3f0a7bbabe6761a4997e9dee9	2024-03-26
https://git.kernel.org/stable/c/e18afcb7b2a12b635ac10081f943fcf84ddacc51	2024-02-15

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2024-26894	2024-11-12
https://bugzilla.redhat.com/show_bug.cgi?id=2275661	2024-11-12

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"				>= 3.7 < 4.19.311 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.7 < 4.19.311"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.7 < 5.4.273 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.7 < 5.4.273"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.7 < 5.10.214 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.7 < 5.10.214"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.7 < 5.15.153 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.7 < 5.15.153"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.7 < 6.1.83 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.7 < 6.1.83"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.7 < 6.6.23 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.7 < 6.6.23"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.7 < 6.7.11 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.7 < 6.7.11"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.7 < 6.8.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.7 < 6.8.2"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.7 < 6.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.7 < 6.9"		en		Affected