CVE-2022-49793

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49793
In the Linux kernel, the following vulnerability has been resolved: iio: trigger: sysfs: fix possible memory leak in iio_sysfs_trig_init() dev_set_name() allocates memory for name, it need be freed when device_add() fails, call put_device() to give up the reference that hold in device_initialize(), so that it can be freed in kobject_cleanup() when the refcount hit to 0. Fault injection test can trigger this: unreferenced object 0xffff8e8340a7b4c0 (size 32): comm "modprobe", pid 243, jiffies 4294678145 (age 48.845s) hex dump (first 32 bytes): 69 69 6f 5f 73 79 73 66 73 5f 74 72 69 67 67 65 iio_sysfs_trigge 72 00 a7 40 83 8e ff ff 00 86 13 c4 f6 ee ff ff r..@............ backtrace: [<0000000074999de8>] __kmem_cache_alloc_node+0x1e9/0x360 [<00000000497fd30b>] __kmalloc_node_track_caller+0x44/0x1a0 [<000000003636c520>] kstrdup+0x2d/0x60 [<0000000032f84da2>] kobject_set_name_vargs+0x1e/0x90 [<0000000092efe493>] dev_set_name+0x4e/0x70

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/0dd52e141afde089304de470148d311b05c14564 Patch
https://git.kernel.org/stable/c/2c4e65285bdea23fd36d2ff376006ac64db6f42e Patch
https://git.kernel.org/stable/c/5a39382aa5411d64b25a71516c2c7480aab13bb7 Patch
https://git.kernel.org/stable/c/656f670613662b6cc77aad14112db2803ad18fa8 Patch
https://git.kernel.org/stable/c/8dddf2699da296c84205582aaead6b43dd7e8c4b Patch
https://git.kernel.org/stable/c/b47bb521961f027b4dcf8683337a7a1ba9e5ea1f Patch
https://git.kernel.org/stable/c/efa17e90e1711bdb084e3954fa44afb6647331c0 Patch
https://git.kernel.org/stable/c/f68c96821b61d2c71a35dbb8bf90c347fad624d9 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:6.1:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*
History

03 Nov 2025, 14:02

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/0dd52e141afde089304de470148d311b05c14564 - () https://git.kernel.org/stable/c/0dd52e141afde089304de470148d311b05c14564 - Patch
References () https://git.kernel.org/stable/c/2c4e65285bdea23fd36d2ff376006ac64db6f42e - () https://git.kernel.org/stable/c/2c4e65285bdea23fd36d2ff376006ac64db6f42e - Patch
References () https://git.kernel.org/stable/c/5a39382aa5411d64b25a71516c2c7480aab13bb7 - () https://git.kernel.org/stable/c/5a39382aa5411d64b25a71516c2c7480aab13bb7 - Patch
References () https://git.kernel.org/stable/c/656f670613662b6cc77aad14112db2803ad18fa8 - () https://git.kernel.org/stable/c/656f670613662b6cc77aad14112db2803ad18fa8 - Patch
References () https://git.kernel.org/stable/c/8dddf2699da296c84205582aaead6b43dd7e8c4b - () https://git.kernel.org/stable/c/8dddf2699da296c84205582aaead6b43dd7e8c4b - Patch
References () https://git.kernel.org/stable/c/b47bb521961f027b4dcf8683337a7a1ba9e5ea1f - () https://git.kernel.org/stable/c/b47bb521961f027b4dcf8683337a7a1ba9e5ea1f - Patch
References () https://git.kernel.org/stable/c/efa17e90e1711bdb084e3954fa44afb6647331c0 - () https://git.kernel.org/stable/c/efa17e90e1711bdb084e3954fa44afb6647331c0 - Patch
References () https://git.kernel.org/stable/c/f68c96821b61d2c71a35dbb8bf90c347fad624d9 - () https://git.kernel.org/stable/c/f68c96821b61d2c71a35dbb8bf90c347fad624d9 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-401
First Time Linux
Linux linux Kernel

02 May 2025, 13:53

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iio: trigger: sysfs: se corrige una posible fuga de memoria en iio_sysfs_trig_init(). dev_set_name() asigna memoria para name. Esta debe liberarse cuando device_add() falla. Se llama a put_device() para liberar la referencia contenida en device_initialize(), de modo que pueda liberarse en kobject_cleanup() cuando refcount llegue a 0. La prueba de inyección de fallos puede desencadenar esto: objeto sin referencia 0xffff8e8340a7b4c0 (tamaño 32): comm "modprobe", pid 243, jiffies 4294678145 (edad 48.845s) volcado hexadecimal (primeros 32 bytes): 69 69 6f 5f 73 79 73 66 73 5f 74 72 69 67 67 65 iio_sysfs_trigge 72 00 a7 40 83 8e ff ff 00 86 13 c4 f6 ee ff ff r..@............ backtrace: [&lt;0000000074999de8&gt;] __kmem_cache_alloc_node+0x1e9/0x360 [&lt;00000000497fd30b&gt;] __kmalloc_node_track_caller+0x44/0x1a0 [&lt;000000003636c520&gt;] kstrdup+0x2d/0x60 [&lt;0000000032f84da2&gt;] kobject_set_name_vargs+0x1e/0x90 [&lt;0000000092efe493&gt;] dev_set_name+0x4e/0x70

01 May 2025, 15:16

Type Values Removed Values Added
New CVE
Information

Published : 2025-05-01 15:16

Updated : 2025-11-06 22:07

NVD link : CVE-2022-49793

Mitre link : CVE-2022-49793

CVE.ORG link : CVE-2022-49793

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime