cbcvebase.
CVE-2024-56769
published 2025-01-06

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]…

PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.22%
13.0th percentile
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 ...

Affected

21 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.123-1 (bookworm)linux 6.1.123-1 (bookworm)
debianlinux-6.1< linux 6.1.123-1 (bookworm)linux 6.1.123-1 (bookworm)
linuxlinux
linuxlinux>= 74340b0a8bc60b400c7e5fe4950303aa6f914d16 < 035772fcd631eee2756b31cb6df249c0a8d453d7035772fcd631eee2756b31cb6df249c0a8d453d7
linuxlinux>= 74340b0a8bc60b400c7e5fe4950303aa6f914d16 < e11778189513cd7fb2edced5bd053bc18ede8418e11778189513cd7fb2edced5bd053bc18ede8418
linuxlinux>= 74340b0a8bc60b400c7e5fe4950303aa6f914d16 < 53106510736e734ce8b731ba871363389bfbf4c953106510736e734ce8b731ba871363389bfbf4c9
linuxlinux>= 74340b0a8bc60b400c7e5fe4950303aa6f914d16 < 3876e3a1c31a58a352c6bf5d2a90e3304445a6373876e3a1c31a58a352c6bf5d2a90e3304445a637
linuxlinux>= 74340b0a8bc60b400c7e5fe4950303aa6f914d16 < 1d6de21f00293d819b5ca6dbe75ff1f3b63921401d6de21f00293d819b5ca6dbe75ff1f3b6392140
linuxlinux>= 74340b0a8bc60b400c7e5fe4950303aa6f914d16 < c1197c1457bb7098cf46366e898eb52b41b6876ac1197c1457bb7098cf46366e898eb52b41b6876a
linuxlinux>= 74340b0a8bc60b400c7e5fe4950303aa6f914d16 < 2dd59fe0e19e1ab955259978082b62e5751924c72dd59fe0e19e1ab955259978082b62e5751924c7
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.234-15.10.234-1
linuxlinux_kernel>= 0 < 6.1.123-16.1.123-1
linuxlinux_kernel>= 0 < 6.12.8-16.12.8-1
linuxlinux_kernel>= 0 < 6.12.8-16.12.8-1
linuxlinux_kernel>= 0 < 5.4.0-211.2315.4.0-211.231
linuxlinux_kernel>= 0 < 5.15.0-135.1465.15.0-135.146
linuxlinux_kernel>= 0 < 6.8.0-60.636.8.0-60.63
linuxlinux_kernel>= 2.6.19 < 6.1.1236.1.123
linuxlinux_kernel>= 6.2 < 6.6.696.6.69
linuxlinux_kernel>= 6.7 < 6.12.86.12.8

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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