CVE-2024-35831

io_uring: Fix release of pinned pages when __io_uaddr_map fails

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:

io_uring: Fix release of pinned pages when __io_uaddr_map fails

Looking at the error path of __io_uaddr_map, if we fail after pinning
the pages for any reasons, ret will be set to -EINVAL and the error
handler won't properly release the pinned pages.

I didn't manage to trigger it without forcing a failure, but it can
happen in real life when memory is heavily fragmented.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: io_uring: corregida la liberación de páginas fijadas cuando falla __io_uaddr_map. Mirando la ruta de error de __io_uaddr_map, si fallamos después de fijar las páginas por cualquier motivo, ret se establecerá en -EINVAL y el El controlador de errores no libera correctamente las páginas fijadas. No logré activarlo sin forzar un fallo, pero puede suceder en la vida real cuando la memoria está muy fragmentada.

*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

2024-05-17 CVE Reserved
2024-05-17 CVE Published
2024-05-18 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/223ef474316466e9f61f6e0064f3a6fe4923a2c5	Vuln. Introduced
https://git.kernel.org/stable/c/3f3164ce6396138747984ee9e61158e248246300	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/0b6f39c175ba5f0ef72bdb3b9d2a06ad78621d62	2024-03-26
https://git.kernel.org/stable/c/712e2c8415f55a4a4ddaa98a430b87f624109f69	2024-03-26
https://git.kernel.org/stable/c/4d376d7ad62b6a8e8dfff56b559d9d275e5b9b3a	2024-03-26
https://git.kernel.org/stable/c/67d1189d1095d471ed7fa426c7e384a7140a5dd7	2024-03-13

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"				>= 6.6 < 6.6.23 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6 < 6.6.23"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.6 < 6.7.11 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6 < 6.7.11"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.6 < 6.8.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6 < 6.8.2"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.6 < 6.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6 < 6.9"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.5.7 Search vendor "Linux" for product "Linux Kernel" and version "6.5.7"		en		Affected