CVE-2024-56769

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-56769
In the Linux kernel, the following vulnerability has been resolved: media: dvb-frontends: dib3000mb: fix uninit-value in dib3000_write_reg Syzbot reports [1] an uninitialized value issue found by KMSAN in dib3000_read_reg(). Local u8 rb[2] is used in i2c_transfer() as a read buffer; in case that call fails, the buffer may end up with some undefined values. Since no elaborate error handling is expected in dib3000_write_reg(), simply zero out rb buffer to mitigate the problem. [1] Syzkaller report dvb-usb: bulk message failed: -22 (6/0) ===================================================== BUG: KMSAN: uninit-value in dib3000mb_attach+0x2d8/0x3c0 drivers/media/dvb-frontends/dib3000mb.c:758 dib3000mb_attach+0x2d8/0x3c0 drivers/media/dvb-frontends/dib3000mb.c:758 dibusb_dib3000mb_frontend_attach+0x155/0x2f0 drivers/media/usb/dvb-usb/dibusb-mb.c:31 dvb_usb_adapter_frontend_init+0xed/0x9a0 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:290 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:90 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:186 [inline] dvb_usb_device_init+0x25a8/0x3760 drivers/media/usb/dvb-usb/dvb-usb-init.c:310 dibusb_probe+0x46/0x250 drivers/media/usb/dvb-usb/dibusb-mb.c:110 ... Local variable rb created at: dib3000_read_reg+0x86/0x4e0 drivers/media/dvb-frontends/dib3000mb.c:54 dib3000mb_attach+0x123/0x3c0 drivers/media/dvb-frontends/dib3000mb.c:758 ...

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/035772fcd631eee2756b31cb6df249c0a8d453d7
https://git.kernel.org/stable/c/1d6de21f00293d819b5ca6dbe75ff1f3b6392140 Patch
https://git.kernel.org/stable/c/2dd59fe0e19e1ab955259978082b62e5751924c7 Patch
https://git.kernel.org/stable/c/3876e3a1c31a58a352c6bf5d2a90e3304445a637 Patch
https://git.kernel.org/stable/c/53106510736e734ce8b731ba871363389bfbf4c9
https://git.kernel.org/stable/c/c1197c1457bb7098cf46366e898eb52b41b6876a Patch
https://git.kernel.org/stable/c/e11778189513cd7fb2edced5bd053bc18ede8418
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:6.13:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*
History

09 Jan 2025, 16:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/035772fcd631eee2756b31cb6df249c0a8d453d7 -
  • () https://git.kernel.org/stable/c/53106510736e734ce8b731ba871363389bfbf4c9 -
  • () https://git.kernel.org/stable/c/e11778189513cd7fb2edced5bd053bc18ede8418 -

07 Jan 2025, 22:49

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-908
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*
First Time Linux linux Kernel
Linux
References () https://git.kernel.org/stable/c/1d6de21f00293d819b5ca6dbe75ff1f3b6392140 - () https://git.kernel.org/stable/c/1d6de21f00293d819b5ca6dbe75ff1f3b6392140 - Patch
References () https://git.kernel.org/stable/c/2dd59fe0e19e1ab955259978082b62e5751924c7 - () https://git.kernel.org/stable/c/2dd59fe0e19e1ab955259978082b62e5751924c7 - Patch
References () https://git.kernel.org/stable/c/3876e3a1c31a58a352c6bf5d2a90e3304445a637 - () https://git.kernel.org/stable/c/3876e3a1c31a58a352c6bf5d2a90e3304445a637 - Patch
References () https://git.kernel.org/stable/c/c1197c1457bb7098cf46366e898eb52b41b6876a - () https://git.kernel.org/stable/c/c1197c1457bb7098cf46366e898eb52b41b6876a - Patch
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: media: dvb-frontends: dib3000mb: corrección de un valor no inicializado en dib3000_write_reg Syzbot informa [1] de un problema de valor no inicializado encontrado por KMSAN en dib3000_read_reg(). El rb u8 local [2] se utiliza en i2c_transfer() como un búfer de lectura; en caso de que esa llamada falle, el búfer puede terminar con algunos valores indefinidos. Dado que no se espera una gestión elaborada de errores en dib3000_write_reg(), simplemente ponga a cero el búfer rb para mitigar el problema. [1] Syzkaller informa dvb-usb: error en el mensaje masivo: -22 (6/0) ======================================================= ERROR: KMSAN: valor no inicializado en dib3000mb_attach+0x2d8/0x3c0 drivers/media/dvb-frontends/dib3000mb.c:758 dib3000mb_attach+0x2d8/0x3c0 drivers/media/dvb-frontends/dib3000mb.c:758 dibusb_dib3000mb_frontend_attach+0x155/0x2f0 drivers/media/usb/dvb-usb/dibusb-mb.c:31 dvb_usb_adapter_frontend_init+0xed/0x9a0 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:290 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:90 [en línea] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:186 [en línea] dvb_usb_device_init+0x25a8/0x3760 drivers/media/usb/dvb-usb/dvb-usb-init.c:310 dibusb_probe+0x46/0x250 drivers/media/usb/dvb-usb/dibusb-mb.c:110 ... Variable local rb manipulado en: dib3000_read_reg+0x86/0x4e0 drivers/media/dvb-frontends/dib3000mb.c:54 dib3000mb_attach+0x123/0x3c0 drivers/media/dvb-frontends/dib3000mb.c:758 ...

06 Jan 2025, 17:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-01-06 17:15

Updated : 2025-01-09 16:16

NVD link : CVE-2024-56769

Mitre link : CVE-2024-56769

CVE.ORG link : CVE-2024-56769

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-908

Use of Uninitialized Resource