CVE-2021-47173

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47173
In the Linux kernel, the following vulnerability has been resolved: misc/uss720: fix memory leak in uss720_probe uss720_probe forgets to decrease the refcount of usbdev in uss720_probe. Fix this by decreasing the refcount of usbdev by usb_put_dev. BUG: memory leak unreferenced object 0xffff888101113800 (size 2048): comm "kworker/0:1", pid 7, jiffies 4294956777 (age 28.870s) hex dump (first 32 bytes): ff ff ff ff 31 00 00 00 00 00 00 00 00 00 00 00 ....1........... 00 00 00 00 00 00 00 00 00 00 00 00 03 00 00 00 ................ backtrace: [<ffffffff82b8e822>] kmalloc include/linux/slab.h:554 [inline] [<ffffffff82b8e822>] kzalloc include/linux/slab.h:684 [inline] [<ffffffff82b8e822>] usb_alloc_dev+0x32/0x450 drivers/usb/core/usb.c:582 [<ffffffff82b98441>] hub_port_connect drivers/usb/core/hub.c:5129 [inline] [<ffffffff82b98441>] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] [<ffffffff82b98441>] port_event drivers/usb/core/hub.c:5509 [inline] [<ffffffff82b98441>] hub_event+0x1171/0x20c0 drivers/usb/core/hub.c:5591 [<ffffffff81259229>] process_one_work+0x2c9/0x600 kernel/workqueue.c:2275 [<ffffffff81259b19>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2421 [<ffffffff81261228>] kthread+0x178/0x1b0 kernel/kthread.c:292 [<ffffffff8100227f>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

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/36b5ff1db1a4ef4fdbc2bae364344279f033ad88 Patch
https://git.kernel.org/stable/c/386918878ce4cd676e4607233866e03c9399a46a Patch
https://git.kernel.org/stable/c/5394ae9d8c7961dd93807fdf1b12a1dde96b0a55 Patch
https://git.kernel.org/stable/c/5f46b2410db2c8f26b8bb91b40deebf4ec184391 Patch
https://git.kernel.org/stable/c/7889c70e6173ef358f3cd7578db127a489035a42 Patch
https://git.kernel.org/stable/c/a3c3face38cb49932c62adcc1289914f1c742096 Patch
https://git.kernel.org/stable/c/bcb30cc8f8befcbdbcf7a016e4dfd4747c54a364 Patch
https://git.kernel.org/stable/c/dcb4b8ad6a448532d8b681b5d1a7036210b622de 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:*:*:*:*:*:*:*:*
History

16 May 2024, 21:19

Type Values Removed Values Added
First Time Linux
Linux linux Kernel
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
References () https://git.kernel.org/stable/c/36b5ff1db1a4ef4fdbc2bae364344279f033ad88 - () https://git.kernel.org/stable/c/36b5ff1db1a4ef4fdbc2bae364344279f033ad88 - Patch
References () https://git.kernel.org/stable/c/386918878ce4cd676e4607233866e03c9399a46a - () https://git.kernel.org/stable/c/386918878ce4cd676e4607233866e03c9399a46a - Patch
References () https://git.kernel.org/stable/c/5394ae9d8c7961dd93807fdf1b12a1dde96b0a55 - () https://git.kernel.org/stable/c/5394ae9d8c7961dd93807fdf1b12a1dde96b0a55 - Patch
References () https://git.kernel.org/stable/c/5f46b2410db2c8f26b8bb91b40deebf4ec184391 - () https://git.kernel.org/stable/c/5f46b2410db2c8f26b8bb91b40deebf4ec184391 - Patch
References () https://git.kernel.org/stable/c/7889c70e6173ef358f3cd7578db127a489035a42 - () https://git.kernel.org/stable/c/7889c70e6173ef358f3cd7578db127a489035a42 - Patch
References () https://git.kernel.org/stable/c/a3c3face38cb49932c62adcc1289914f1c742096 - () https://git.kernel.org/stable/c/a3c3face38cb49932c62adcc1289914f1c742096 - Patch
References () https://git.kernel.org/stable/c/bcb30cc8f8befcbdbcf7a016e4dfd4747c54a364 - () https://git.kernel.org/stable/c/bcb30cc8f8befcbdbcf7a016e4dfd4747c54a364 - Patch
References () https://git.kernel.org/stable/c/dcb4b8ad6a448532d8b681b5d1a7036210b622de - () https://git.kernel.org/stable/c/dcb4b8ad6a448532d8b681b5d1a7036210b622de - Patch
CWE CWE-401

25 Mar 2024, 13:47

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: misc/uss720: corrige la pérdida de memoria en uss720_probe uss720_probe olvida disminuir el recuento de usbdev en uss720_probe. Solucione este problema disminuyendo el recuento de usbdev por usb_put_dev. ERROR: pérdida de memoria, objeto sin referencia 0xffff888101113800 (tamaño 2048): comunicación "kworker/0:1", pid 7, jiffies 4294956777 (edad 28,870 s) volcado hexadecimal (primeros 32 bytes): ff ff ff ff 31 00 00 00 00 00 00 00 00 00 00 00 ....1.......... 00 00 00 00 00 00 00 00 00 00 00 00 03 00 00 00 ................. ... seguimiento: [] kmalloc include/linux/slab.h:554 [en línea] [] kzalloc include/linux/slab.h:684 [en línea] [] usb_alloc_dev+0x32/ 0x450 controladores/usb/core/usb.c:582 [] hub_port_connect drivers/usb/core/hub.c:5129 [en línea] [] hub_port_connect_change drivers/usb/core/hub.c:5363 [ en línea] [] port_event drivers/usb/core/hub.c:5509 [en línea] [] hub_event+0x1171/0x20c0 drivers/usb/core/hub.c:5591 [] Process_one_work+ 0x2c9/0x600 kernel/workqueue.c:2275 [] trabajador_thread+0x59/0x5d0 kernel/workqueue.c:2421 [] kthread+0x178/0x1b0 kernel/kthread.c:292 [ ] ret_from_fork +0x1f/0x30 arco/x86/entrada/entrada_64.S:294

25 Mar 2024, 10:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-03-25 10:15

Updated : 2024-05-16 21:19

NVD link : CVE-2021-47173

Mitre link : CVE-2021-47173

CVE.ORG link : CVE-2021-47173

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime


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