Executive Summary

Informations
Name CVE-2024-56769 First vendor Publication 2025-01-06
Vendor Cve Last vendor Modification 2025-01-09

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 5.5
Base Score 5.5 Environmental Score 5.5
impact SubScore 3.6 Temporal Score 5.5
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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 ...

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-56769

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 8
Os 3671

Sources (Detail)

https://git.kernel.org/stable/c/035772fcd631eee2756b31cb6df249c0a8d453d7
https://git.kernel.org/stable/c/1d6de21f00293d819b5ca6dbe75ff1f3b6392140
https://git.kernel.org/stable/c/2dd59fe0e19e1ab955259978082b62e5751924c7
https://git.kernel.org/stable/c/3876e3a1c31a58a352c6bf5d2a90e3304445a637
https://git.kernel.org/stable/c/53106510736e734ce8b731ba871363389bfbf4c9
https://git.kernel.org/stable/c/c1197c1457bb7098cf46366e898eb52b41b6876a
https://git.kernel.org/stable/c/e11778189513cd7fb2edced5bd053bc18ede8418
Source Url

Alert History

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0
1
2
Date Informations
2025-01-09 21:20:29
  • Multiple Updates
2025-01-08 00:20:28
  • Multiple Updates
2025-01-06 21:20:27
  • First insertion