CVE-2022-49492

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49492
In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags In nvme_alloc_admin_tags, the admin_q can be set to an error (typically -ENOMEM) if the blk_mq_init_queue call fails to set up the queue, which is checked immediately after the call. However, when we return the error message up the stack, to nvme_reset_work the error takes us to nvme_remove_dead_ctrl() nvme_dev_disable() nvme_suspend_queue(&dev->queues[0]). Here, we only check that the admin_q is non-NULL, rather than not an error or NULL, and begin quiescing a queue that never existed, leading to bad / NULL pointer dereference.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

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/54a4c1e47d1b2585e74920399455bd9abbfb2bd7 Patch
https://git.kernel.org/stable/c/7a28556082d1fbcbc599baf1c24252dfc73efefc Patch
https://git.kernel.org/stable/c/8321b17789f614414206af07e17ce4751c95dc76 Patch
https://git.kernel.org/stable/c/8da2b7bdb47e94bbc4062a3978c708926bcb022c Patch
https://git.kernel.org/stable/c/906c81dba8ee8057523859b5e1a2479e9fd34860 Patch
https://git.kernel.org/stable/c/9e649471b396fa0139d53919354ce1eace9b9a24 Patch
https://git.kernel.org/stable/c/af98940dd33c9f9e1beb4f71c0a39260100e2a65 Patch
https://git.kernel.org/stable/c/da42761181627e9bdc37d18368b827948a583929 Patch
https://git.kernel.org/stable/c/f76729662650cd7bc8f8194e057af381370349a7 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

17 Mar 2025, 16:52

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux linux Kernel
Linux
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nvme-pci: corrige una desreferencia de puntero NULL en nvme_alloc_admin_tags En nvme_alloc_admin_tags, admin_q se puede configurar en un error (normalmente -ENOMEM) si la llamada blk_mq_init_queue no puede configurar la cola, que se comprueba inmediatamente después de la llamada. Sin embargo, cuando devolvemos el mensaje de error a la pila, a nvme_reset_work el error nos lleva a nvme_remove_dead_ctrl() nvme_dev_disable() nvme_suspend_queue(&dev->queues[0]). Aquí, solo comprobamos que admin_q no sea NULL, en lugar de no ser un error o NULL, y comenzamos a inactivar una cola que nunca existió, lo que lleva a una desreferencia de puntero NULL incorrecta.
CWE CWE-476
References () https://git.kernel.org/stable/c/54a4c1e47d1b2585e74920399455bd9abbfb2bd7 - () https://git.kernel.org/stable/c/54a4c1e47d1b2585e74920399455bd9abbfb2bd7 - Patch
References () https://git.kernel.org/stable/c/7a28556082d1fbcbc599baf1c24252dfc73efefc - () https://git.kernel.org/stable/c/7a28556082d1fbcbc599baf1c24252dfc73efefc - Patch
References () https://git.kernel.org/stable/c/8321b17789f614414206af07e17ce4751c95dc76 - () https://git.kernel.org/stable/c/8321b17789f614414206af07e17ce4751c95dc76 - Patch
References () https://git.kernel.org/stable/c/8da2b7bdb47e94bbc4062a3978c708926bcb022c - () https://git.kernel.org/stable/c/8da2b7bdb47e94bbc4062a3978c708926bcb022c - Patch
References () https://git.kernel.org/stable/c/906c81dba8ee8057523859b5e1a2479e9fd34860 - () https://git.kernel.org/stable/c/906c81dba8ee8057523859b5e1a2479e9fd34860 - Patch
References () https://git.kernel.org/stable/c/9e649471b396fa0139d53919354ce1eace9b9a24 - () https://git.kernel.org/stable/c/9e649471b396fa0139d53919354ce1eace9b9a24 - Patch
References () https://git.kernel.org/stable/c/af98940dd33c9f9e1beb4f71c0a39260100e2a65 - () https://git.kernel.org/stable/c/af98940dd33c9f9e1beb4f71c0a39260100e2a65 - Patch
References () https://git.kernel.org/stable/c/da42761181627e9bdc37d18368b827948a583929 - () https://git.kernel.org/stable/c/da42761181627e9bdc37d18368b827948a583929 - Patch
References () https://git.kernel.org/stable/c/f76729662650cd7bc8f8194e057af381370349a7 - () https://git.kernel.org/stable/c/f76729662650cd7bc8f8194e057af381370349a7 - Patch

26 Feb 2025, 07:01

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:01

Updated : 2025-03-17 16:52

NVD link : CVE-2022-49492

Mitre link : CVE-2022-49492

CVE.ORG link : CVE-2022-49492

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference