CVE-2024-56769: media: dvb-frontends: dib3000mb: fix uninit-value in dib3000_write_reg

Q: What is the severity of CVE-2024-56769?

CVE-2024-56769 has a severity rating that indicates a moderate risk due to the potential for uninitialized value exposure, impacting system reliability.

Q: How do I fix CVE-2024-56769?

To fix CVE-2024-56769, update the Linux kernel to a version that includes the patch for this vulnerability.

Q: What software is affected by CVE-2024-56769?

CVE-2024-56769 affects various versions of the Linux kernel, particularly those between 2.6.19 and 6.1.123, 6.2 to 6.6.69, and 6.7 to 6.12.8.

Q: What type of vulnerability is CVE-2024-56769?

CVE-2024-56769 is categorized as an uninitialized value vulnerability found in the Linux kernel's media subsystem.

Q: Can CVE-2024-56769 be exploited remotely?

CVE-2024-56769 is not considered a remote exploit vulnerability as it requires local access to the affected system.

Published Jan 6, 2025

Updated

In the Linux kernel, the following vulnerability has been resolved:

media: dvb-frontends: dib3000mb: fix uninit-value in dib3000writereg

Syzbot reports [1] an uninitialized value issue found by KMSAN in dib3000readreg().

Local u8 rb[2] is used in i2ctransfer() 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 dib3000writereg(), 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 dib3000mbattach+0x2d8/0x3c0 drivers/media/dvb-frontends/dib3000mb.c:758 dib3000mbattach+0x2d8/0x3c0 drivers/media/dvb-frontends/dib3000mb.c:758 dibusbdib3000mbfrontendattach+0x155/0x2f0 drivers/media/usb/dvb-usb/dibusb-mb.c:31 dvbusbadapterfrontendinit+0xed/0x9a0 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:290 dvbusbadapterinit drivers/media/usb/dvb-usb/dvb-usb-init.c:90 [inline] dvbusbinit drivers/media/usb/dvb-usb/dvb-usb-init.c:186 [inline] dvbusbdeviceinit+0x25a8/0x3760 drivers/media/usb/dvb-usb/dvb-usb-init.c:310 dibusbprobe+0x46/0x250 drivers/media/usb/dvb-usb/dibusb-mb.c:110 ... Local variable rb created at: dib3000readreg+0x86/0x4e0 drivers/media/dvb-frontends/dib3000mb.c:54 dib3000mbattach+0x123/0x3c0 drivers/media/dvb-frontends/dib3000mb.c:758 ...

Other sources

This CVE was automatically created from a reference found in an email or other text. If you are reading this, then this CVE entry is probably erroneous, since this text should be replaced by the official CVE description automatically.

— Launchpad

Affected Software

220 affected componentsFixes available

Linux Linux kernel>=2.6.19<6.1.123

Linux Linux kernel>=6.2<6.6.69

Linux Linux kernel>=6.7<6.12.8

Linux Linux kernel=6.13-rc1

Linux Linux kernel=6.13-rc2

Linux Linux kernel=6.13-rc3

Microsoft cbl2 kernel 5.15.182.1-1

Microsoft azl3 kernel 6.6.64.2-9

Patch available

Microsoft cbl2 kernel 5.15.182.1-1

Patch available

Microsoft azl3 kernel 6.6.76.1-1

Patch available

Microsoft cbl2 kernel 5.15.176.3-1

Patch available

ubuntu/linux*

ubuntu/linux-aws*

ubuntu/linux-azure*

ubuntu/linux-lts-xenial*

ubuntu/linux*

ubuntu/linux-aws*

ubuntu/linux-aws-hwe*

ubuntu/linux-azure*

ubuntu/linux-gcp*

ubuntu/linux-hwe*

ubuntu/linux-hwe-edge*

ubuntu/linux-kvm*

ubuntu/linux-oracle*

ubuntu/linux-fips*

ubuntu/linux*

ubuntu/linux-aws*

ubuntu/linux-aws-5.0*

ubuntu/linux-aws-5.3*

ubuntu/linux-aws-5.4<5.4.0-1142.152~18.04.1

5.4.0-1142.152~18.04.1

ubuntu/linux-azure*

ubuntu/linux-azure-4.15*

ubuntu/linux-azure-5.3*

ubuntu/linux-azure-5.4<5.4.0-1147.154~18.04.1

5.4.0-1147.154~18.04.1

ubuntu/linux-azure-edge*

ubuntu/linux-gcp*

ubuntu/linux-gcp-4.15*

ubuntu/linux-gcp-5.3*

ubuntu/linux-gcp-5.4<5.4.0-1145.154~18.04.1

5.4.0-1145.154~18.04.1

ubuntu/linux-gke-4.15*

ubuntu/linux-gke-5.4*

ubuntu/linux-gkeop-5.4*

ubuntu/linux-hwe*

ubuntu/linux-hwe-5.4<5.4.0-211.231~18.04.1

5.4.0-211.231~18.04.1

ubuntu/linux-hwe-edge*

ubuntu/linux-ibm-5.4<5.4.0-1090.95~18.04.1

5.4.0-1090.95~18.04.1

ubuntu/linux-kvm*

ubuntu/linux-oem*

ubuntu/linux-oracle*

ubuntu/linux-oracle-5.0*

ubuntu/linux-oracle-5.3*

ubuntu/linux-oracle-5.4<5.4.0-1140.149~18.04.1

5.4.0-1140.149~18.04.1

ubuntu/linux-raspi-5.4<5.4.0-1129.142~18.04.1

5.4.0-1129.142~18.04.1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.4.0-211.231

5.4.0-211.231

ubuntu/linux-aws<5.4.0-1142.152

5.4.0-1142.152

ubuntu/linux-aws-5.15<5.15.0-1080.87~20.04.1

5.15.0-1080.87~20.04.1

ubuntu/linux-azure<5.4.0-1147.154

5.4.0-1147.154

ubuntu/linux-azure-5.15<5.15.0-1086.95~20.04.1

5.15.0-1086.95~20.04.1

ubuntu/linux-bluefield<5.4.0-1101.108

5.4.0-1101.108

ubuntu/linux-gcp<5.4.0-1145.154

5.4.0-1145.154

ubuntu/linux-gcp-5.15<5.15.0-1081.90~20.04.1

5.15.0-1081.90~20.04.1

ubuntu/linux-hwe-5.15<5.15.0-136.147~20.04.1

5.15.0-136.147~20.04.1

ubuntu/linux-ibm<5.4.0-1088.93

5.4.0-1088.93

ubuntu/linux-ibm-5.15<5.15.0-1074.77~20.04.1

5.15.0-1074.77~20.04.1

ubuntu/linux-intel-iotg-5.15<5.15.0-1077.83~20.04.1

5.15.0-1077.83~20.04.1

ubuntu/linux-iot<5.4.0-1048.51

5.4.0-1048.51

ubuntu/linux-kvm<5.4.0-1129.138

5.4.0-1129.138

ubuntu/linux-lowlatency-hwe-5.15<5.15.0-135.146~20.04.1

5.15.0-135.146~20.04.1

ubuntu/linux-oracle<5.4.0-1140.150

5.4.0-1140.150

ubuntu/linux-oracle-5.15<5.15.0-1077.83~20.04.1

5.15.0-1077.83~20.04.1

ubuntu/linux-raspi<5.4.0-1129.142

5.4.0-1129.142

ubuntu/linux-riscv-5.15<5.15.0-1075.79~20.04.1

5.15.0-1075.79~20.04.1

ubuntu/linux-xilinx-zynqmp<5.4.0-1060.64

5.4.0-1060.64

ubuntu/linux-aws-5.11*

ubuntu/linux-aws-5.13*

ubuntu/linux-aws-5.8*

ubuntu/linux-azure-5.11*

ubuntu/linux-azure-5.13*

ubuntu/linux-azure-5.8*

ubuntu/linux-azure-fde*

ubuntu/linux-gcp-5.11*

ubuntu/linux-gcp-5.13*

ubuntu/linux-gcp-5.8*

ubuntu/linux-gke*

ubuntu/linux-gke-5.15*

ubuntu/linux-gkeop*

ubuntu/linux-gkeop-5.15*

ubuntu/linux-hwe-5.11*

ubuntu/linux-hwe-5.13*

ubuntu/linux-hwe-5.8*

ubuntu/linux-intel-5.13*

ubuntu/linux-nvidia-tegra-5.15<5.15.0-1039.39~20.04.1

5.15.0-1039.39~20.04.1

ubuntu/linux-oem-5.10*

ubuntu/linux-oem-5.13*

ubuntu/linux-oem-5.6*

ubuntu/linux-oracle-5.11*

ubuntu/linux-oracle-5.13*

ubuntu/linux-oracle-5.8*

ubuntu/linux-raspi2*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.11*

ubuntu/linux-riscv-5.8*

ubuntu/linux-aws-fips<5.4.0-1142.153+fips1

5.4.0-1142.153+fips1

ubuntu/linux-azure-fips<5.4.0-1147.154+fips1

5.4.0-1147.154+fips1

ubuntu/linux-fips<5.4.0-1116.126

5.4.0-1116.126

ubuntu/linux-gcp-fips<5.4.0-1145.154+fips1

5.4.0-1145.154+fips1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.15.0-135.146

5.15.0-135.146

ubuntu/linux-allwinner-5.19*

ubuntu/linux-aws<5.15.0-1080.87

5.15.0-1080.87

ubuntu/linux-aws-5.19*

ubuntu/linux-aws-6.2*

ubuntu/linux-aws-6.5*

ubuntu/linux-aws-6.8<6.8.0-1029.31~22.04.1

6.8.0-1029.31~22.04.1

ubuntu/linux-azure<5.15.0-1084.93

5.15.0-1084.93

ubuntu/linux-azure-5.19*

ubuntu/linux-azure-6.2*

ubuntu/linux-azure-6.5*

ubuntu/linux-azure-6.8<6.8.0-1029.34~22.04.1

6.8.0-1029.34~22.04.1

ubuntu/linux-azure-fde<5.15.0-1084.93.1

5.15.0-1084.93.1

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-gcp<5.15.0-1079.88

5.15.0-1079.88

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-gcp-6.5*

ubuntu/linux-gcp-6.8<6.8.0-1030.32~22.04.1

6.8.0-1030.32~22.04.1

ubuntu/linux-gke<5.15.0-1077.83

5.15.0-1077.83

ubuntu/linux-gkeop<5.15.0-1062.70

5.15.0-1062.70

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5*

ubuntu/linux-hwe-6.8<6.8.0-60.63~22.04.1

6.8.0-60.63~22.04.1

ubuntu/linux-ibm<5.15.0-1072.75

5.15.0-1072.75

ubuntu/linux-ibm-6.8<6.8.0-1026.26~22.04.1

6.8.0-1026.26~22.04.1

ubuntu/linux-intel-iot-realtime<5.15.0-1073.75

5.15.0-1073.75

ubuntu/linux-intel-iotg<5.15.0-1075.81

5.15.0-1075.81

ubuntu/linux-kvm<5.15.0-1076.81

5.15.0-1076.81

ubuntu/linux-lowlatency<5.15.0-135.146

5.15.0-135.146

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5*

ubuntu/linux-lowlatency-hwe-6.8<6.8.0-60.63.1~22.04.1

6.8.0-60.63.1~22.04.1

ubuntu/linux-nvidia<5.15.0-1074.75

5.15.0-1074.75

ubuntu/linux-nvidia-6.2*

ubuntu/linux-nvidia-6.5*

ubuntu/linux-nvidia-6.8<6.8.0-1028.31~22.04.1

6.8.0-1028.31~22.04.1

ubuntu/linux-nvidia-tegra<5.15.0-1033.33

5.15.0-1033.33

ubuntu/linux-nvidia-tegra-igx<5.15.0-1021.21

5.15.0-1021.21

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1*

ubuntu/linux-oem-6.5*

ubuntu/linux-oracle<5.15.0-1077.83

5.15.0-1077.83

ubuntu/linux-oracle-6.5*

ubuntu/linux-oracle-6.8<6.8.0-1026.27~22.04.1

6.8.0-1026.27~22.04.1

ubuntu/linux-raspi<5.15.0-1074.77

5.15.0-1074.77

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.19*

ubuntu/linux-riscv-6.5*

ubuntu/linux-riscv-6.8<6.8.0-62.65~22.04.1

6.8.0-62.65~22.04.1

ubuntu/linux-starfive-5.19*

ubuntu/linux-starfive-6.2*

ubuntu/linux-starfive-6.5*

ubuntu/linux-xilinx-zynqmp<5.15.0-1044.48

5.15.0-1044.48

ubuntu/linux-bluefield<5.15.0-1062.64

5.15.0-1062.64

ubuntu/linux-realtime<5.15.0-1080.88

5.15.0-1080.88

ubuntu/linux-realtime-6.8<6.8.1-1022.23~22.04.1

6.8.1-1022.23~22.04.1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips<5.15.0-1080.87+fips1

5.15.0-1080.87+fips1

ubuntu/linux-azure-fips<5.15.0-1083.92+fips1

5.15.0-1083.92+fips1

ubuntu/linux-fips<5.15.0-135.146+fips1

5.15.0-135.146+fips1

ubuntu/linux-gcp-fips<5.15.0-1079.88+fips1

5.15.0-1079.88+fips1

ubuntu/linux<6.8.0-60.63

6.8.0-60.63

ubuntu/linux-aws<6.8.0-1029.31

6.8.0-1029.31

ubuntu/linux-azure<6.8.0-1029.34

6.8.0-1029.34

ubuntu/linux-azure-6.11<6.11.0-1012.12~24.04.1

6.11.0-1012.12~24.04.1

ubuntu/linux-azure-nvidia<6.8.0-1016.17

6.8.0-1016.17

ubuntu/linux-gcp<6.8.0-1030.32

6.8.0-1030.32

ubuntu/linux-gcp-6.11<6.11.0-1011.11~24.04.1

6.11.0-1011.11~24.04.1

ubuntu/linux-gke<6.8.0-1025.29

6.8.0-1025.29

ubuntu/linux-gkeop<6.8.0-1012.14

6.8.0-1012.14

ubuntu/linux-hwe-6.11<6.11.0-21.21~24.04.1

6.11.0-21.21~24.04.1

ubuntu/linux-ibm<6.8.0-1026.26

6.8.0-1026.26

ubuntu/linux-lowlatency<6.8.0-60.63.1

6.8.0-60.63.1

ubuntu/linux-nvidia<6.8.0-1028.31

6.8.0-1028.31

ubuntu/linux-nvidia-6.11<6.11.0-1007.7

6.11.0-1007.7

ubuntu/linux-nvidia-lowlatency<6.8.0-1028.31.1

6.8.0-1028.31.1

ubuntu/linux-nvidia-tegra<6.8.0-1008.8

6.8.0-1008.8

ubuntu/linux-oem-6.11<6.11.0-1017.17

6.11.0-1017.17

ubuntu/linux-oem-6.8<6.8.0-1028.28

6.8.0-1028.28

ubuntu/linux-oracle<6.8.0-1026.27

6.8.0-1026.27

ubuntu/linux-raspi<6.8.0-1028.32

6.8.0-1028.32

ubuntu/linux-raspi-realtime*

ubuntu/linux-realtime*

ubuntu/linux-riscv<6.8.0-60.63.1

6.8.0-60.63.1

ubuntu/linux-xilinx<6.8.0-1017.18

6.8.0-1017.18

ubuntu/linux-raspi-realtime<6.8.0-2023.24

6.8.0-2023.24

ubuntu/linux-realtime<6.8.1-1022.23

6.8.1-1022.23

ubuntu/linux-fips<6.8.0-78.78+fips1

6.8.0-78.78+fips1

debian/linux<6.1.123-1

6.1.123-1

debian/linux<6.12.8-1

6.12.8-1

debian/linux<6.12.8-1

6.12.8-1

debian/linux

6.1.176-16.1.190-16.12.107-16.12.115-27.2.12-17.2.15-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade debian/linux to a version that resolves this vulnerability.
Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.27-1
Upgrade
Upgrade debian/linux-6.1 to a version that resolves this vulnerability.
Fixed in 6.1.129-1~deb11u1
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Fixed in 5.4.0-1142.152~18.04.1
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Fixed in 5.4.0-1147.154~18.04.1
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Fixed in 5.4.0-1145.154~18.04.1
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Fixed in 5.4.0-211.231~18.04.1
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Fixed in 5.4.0-1090.95~18.04.1
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Fixed in 5.4.0-1140.149~18.04.1
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Fixed in 5.4.0-1129.142~18.04.1
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Fixed in 5.4.0-211.231
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Fixed in 5.4.0-1142.152
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Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1080.87~20.04.1
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Fixed in 5.4.0-1147.154
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Fixed in 5.15.0-1086.95~20.04.1
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Fixed in 5.4.0-1101.108
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Fixed in 5.4.0-1145.154
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Fixed in 5.15.0-1081.90~20.04.1
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Fixed in 5.15.0-136.147~20.04.1
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Fixed in 5.4.0-1088.93
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Fixed in 5.15.0-1074.77~20.04.1
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Fixed in 5.15.0-1077.83~20.04.1
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Fixed in 5.4.0-1048.51
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Fixed in 5.4.0-1129.138
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Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-135.146~20.04.1
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Fixed in 5.4.0-1140.150
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Fixed in 5.15.0-1077.83~20.04.1
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Fixed in 5.4.0-1129.142
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Fixed in 5.15.0-1075.79~20.04.1
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Fixed in 5.4.0-1060.64
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Fixed in 5.15.0-1039.39~20.04.1
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Fixed in 5.4.0-1142.153+fips1
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Fixed in 5.4.0-1147.154+fips1
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Fixed in 5.4.0-1116.126
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Fixed in 5.4.0-1145.154+fips1
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Fixed in 5.15.0-135.146
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Fixed in 5.15.0-1080.87
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Fixed in 6.8.0-1029.31~22.04.1
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Fixed in 5.15.0-1084.93
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Fixed in 6.8.0-1029.34~22.04.1
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Fixed in 5.15.0-1084.93.1
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Fixed in 5.15.0-1079.88
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Fixed in 6.8.0-1030.32~22.04.1
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Fixed in 5.15.0-1077.83
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Fixed in 5.15.0-1062.70
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Fixed in 6.8.0-60.63~22.04.1
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Fixed in 5.15.0-1072.75
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Upgrade ubuntu/linux-ibm-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-1026.26~22.04.1
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Fixed in 5.15.0-1073.75
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Fixed in 5.15.0-1075.81
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Fixed in 5.15.0-1076.81
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Fixed in 5.15.0-135.146
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Fixed in 6.8.0-60.63.1~22.04.1
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Fixed in 5.15.0-1074.75
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Fixed in 6.8.0-1028.31~22.04.1
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Fixed in 5.15.0-1033.33
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Fixed in 5.15.0-1021.21
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Fixed in 5.15.0-1077.83
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Fixed in 6.8.0-1026.27~22.04.1
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Fixed in 5.15.0-1074.77
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Fixed in 6.8.0-62.65~22.04.1
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Fixed in 5.15.0-1044.48
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Fixed in 5.15.0-1062.64
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Fixed in 5.15.0-1080.88
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Fixed in 6.8.1-1022.23~22.04.1
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Fixed in 5.15.0-1080.87+fips1
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Fixed in 5.15.0-1083.92+fips1
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Fixed in 5.15.0-135.146+fips1
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Fixed in 5.15.0-1079.88+fips1
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Fixed in 6.8.0-60.63
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Fixed in 6.8.0-1029.31
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Fixed in 6.8.0-1029.34
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Fixed in 6.11.0-1012.12~24.04.1
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Fixed in 6.8.0-1016.17
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Fixed in 6.8.0-1030.32
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Fixed in 6.11.0-1011.11~24.04.1
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Fixed in 6.8.0-1025.29
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Fixed in 6.8.0-1012.14
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Fixed in 6.11.0-21.21~24.04.1
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Fixed in 6.8.0-1026.26
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Fixed in 6.8.0-60.63.1
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Fixed in 6.8.0-1028.31
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Fixed in 6.11.0-1007.7
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Fixed in 6.8.0-1028.31.1
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Fixed in 6.8.0-1008.8
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Fixed in 6.11.0-1017.17
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Fixed in 6.8.0-1028.28
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Fixed in 6.8.0-1026.27
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Fixed in 6.8.0-1028.32
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Fixed in 6.8.0-60.63.1
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Fixed in 6.8.0-1017.18
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Fixed in 6.8.0-2023.24
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Fixed in 6.8.1-1022.23
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Fixed in 6.8.0-78.78+fips1
Compensating control
Zero-initialize the local u8 rb[2] read buffer in dib3000_read_reg() before calling i2c_transfer(), so failed transfers cannot leave undefined values.

Event History

Jan 6, 2025

CVE Published

via MITRE·04:20 PM

Data Sourced

via MITRE·04:20 PM

Description

Data Sourced

via OSV·05:15 PM

DescriptionSeverityAffected Software

Data Sourced

via NVD·05:15 PM

RemedyDescriptionSeverityWeaknessAffected Software

Mar 13, 2025

Data Sourced

via Microsoft·07:00 AM

DescriptionSeverityWeaknessAffected Software

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

What is the severity of CVE-2024-56769?

CVE-2024-56769 has a severity rating that indicates a moderate risk due to the potential for uninitialized value exposure, impacting system reliability.

How do I fix CVE-2024-56769?

To fix CVE-2024-56769, update the Linux kernel to a version that includes the patch for this vulnerability.

What software is affected by CVE-2024-56769?

CVE-2024-56769 affects various versions of the Linux kernel, particularly those between 2.6.19 and 6.1.123, 6.2 to 6.6.69, and 6.7 to 6.12.8.

What type of vulnerability is CVE-2024-56769?

CVE-2024-56769 is categorized as an uninitialized value vulnerability found in the Linux kernel's media subsystem.

Can CVE-2024-56769 be exploited remotely?

CVE-2024-56769 is not considered a remote exploit vulnerability as it requires local access to the affected system.

CVE-2024-56769: media: dvb-frontends: dib3000mb: fix uninit-value in dib3000_write_reg

Other sources

Affected Software

Remediation

Event History

Peer vulnerabilities

Frequently Asked Questions

What is the severity of CVE-2024-56769?

How do I fix CVE-2024-56769?

What software is affected by CVE-2024-56769?

What type of vulnerability is CVE-2024-56769?

Can CVE-2024-56769 be exploited remotely?

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