CVE-2024-35997

HID: i2c-hid: remove I2C_HID_READ_PENDING flag to prevent lock-up

Severity Score

5.5

*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:

HID: i2c-hid: remove I2C_HID_READ_PENDING flag to prevent lock-up

The flag I2C_HID_READ_PENDING is used to serialize I2C operations.
However, this is not necessary, because I2C core already has its own
locking for that.

More importantly, this flag can cause a lock-up: if the flag is set in
i2c_hid_xfer() and an interrupt happens, the interrupt handler
(i2c_hid_irq) will check this flag and return immediately without doing
anything, then the interrupt handler will be invoked again in an
infinite loop.

Since interrupt handler is an RT task, it takes over the CPU and the
flag-clearing task never gets scheduled, thus we have a lock-up.

Delete this unnecessary flag.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: HID: i2c-hid: elimine el indicador I2C_HID_READ_PENDING para evitar el bloqueo. El indicador I2C_HID_READ_PENDING se utiliza para serializar operaciones I2C. Sin embargo, esto no es necesario, porque el núcleo I2C ya tiene su propio bloqueo para ello. Más importante aún, este indicador puede causar un bloqueo: si el indicador está configurado en i2c_hid_xfer() y ocurre una interrupción, el controlador de interrupciones (i2c_hid_irq) verificará este indicador y regresará inmediatamente sin hacer nada, entonces se invocará el controlador de interrupciones. nuevamente en un bucle infinito. Dado que el controlador de interrupciones es una tarea RT, se hace cargo de la CPU y la tarea de limpieza de banderas nunca se programa, por lo que tenemos un bloqueo. Elimine esta bandera innecesaria.

*Credits: N/A

CVSS Scores

NISTv3.1 5.5

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-05-17 CVE Reserved
2024-05-20 CVE Published
2024-05-24 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption
CWE-667: Improper Locking

CAPEC

References (11)

URL	Tag	Source
https://git.kernel.org/stable/c/4a200c3b9a40242652b5734630bdd0bcf3aca75f	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/21bfca822cfc1e71796124e93b46e0d9fa584401	2024-05-02
https://git.kernel.org/stable/c/c448a9fd50f77e8fb9156ff64848aa4295eb3003	2024-05-02
https://git.kernel.org/stable/c/5095b93021b899f54c9355bebf36d78854c33a22	2024-05-02
https://git.kernel.org/stable/c/b65fb50e04a95eec34a9d1bc138454a98a5578d8	2024-05-02
https://git.kernel.org/stable/c/0561b65fbd53d3e788c5b0222d9112ca016fd6a1	2024-05-02
https://git.kernel.org/stable/c/29e94f295bad5be59cf4271a93e22cdcf5536722	2024-05-02
https://git.kernel.org/stable/c/418c5575d56410c6e186ab727bf32ae32447d497	2024-05-02
https://git.kernel.org/stable/c/9c0f59e47a90c54d0153f8ddc0f80d7a36207d0e	2024-03-21

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"				>= 3.8 < 4.19.313 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.8 < 4.19.313"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.8 < 5.4.275 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.8 < 5.4.275"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.8 < 5.10.216 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.8 < 5.10.216"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.8 < 5.15.158 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.8 < 5.15.158"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.8 < 6.1.90 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.8 < 6.1.90"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.8 < 6.6.30 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.8 < 6.6.30"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.8 < 6.8.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.8 < 6.8.9"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.8 < 6.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.8 < 6.9"		en		Affected