CVE-2025-21785: arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array

Q: What is the severity of CVE-2025-21785?

CVE-2025-21785 is classified with a high severity level due to the risk of out-of-bounds writes that could potentially lead to memory corruption.

Q: How do I fix CVE-2025-21785?

To fix CVE-2025-21785, update to the latest patched version of the Linux kernel provided by your operating system vendor.

Q: What versions of the Linux kernel are affected by CVE-2025-21785?

CVE-2025-21785 affects certain versions of the Linux kernel where cache information processing does not properly validate bounds.

Q: Can CVE-2025-21785 be exploited remotely?

Exploitation of CVE-2025-21785 typically requires local access to the system, making remote exploitation unlikely.

Q: What are the implications of CVE-2025-21785 if left unpatched?

If left unpatched, CVE-2025-21785 could lead to system instability, data corruption, or unauthorized access to system resources.

Published Feb 27, 2025

Updated

arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array

Affected Software

217 affected componentsFixes available

Linux Linux kernel

Microsoft azl3 kernel 6.6.79.1-1

Patch available

Microsoft azl3 kernel 6.6.78.1-3

Patch available

Linux Linux kernel>=4.0<6.1.129

Linux Linux kernel>=6.2<6.6.79

Linux Linux kernel>=6.7<6.12.16

Linux Linux kernel>=6.13<6.13.4

Linux Linux kernel=6.14-rc1

Linux Linux kernel=6.14-rc2

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<5.4.0-1146.156~18.04.1

5.4.0-1146.156~18.04.1

ubuntu/linux-azure*

ubuntu/linux-azure-4.15*

ubuntu/linux-azure-5.3*

ubuntu/linux-azure-5.4<5.4.0-1151.158~18.04.1

5.4.0-1151.158~18.04.1

ubuntu/linux-azure-edge*

ubuntu/linux-gcp*

ubuntu/linux-gcp-4.15*

ubuntu/linux-gcp-5.3*

ubuntu/linux-gcp-5.4<5.4.0-1149.158~18.04.1

5.4.0-1149.158~18.04.1

ubuntu/linux-gke-4.15*

ubuntu/linux-gke-5.4*

ubuntu/linux-gkeop-5.4*

ubuntu/linux-hwe*

ubuntu/linux-hwe-5.4<5.4.0-216.236~18.04.1

5.4.0-216.236~18.04.1

ubuntu/linux-hwe-edge*

ubuntu/linux-ibm-5.4<5.4.0-1092.97~18.04.1

5.4.0-1092.97~18.04.1

ubuntu/linux-kvm*

ubuntu/linux-oem*

ubuntu/linux-oracle*

ubuntu/linux-oracle-5.0*

ubuntu/linux-oracle-5.3*

ubuntu/linux-oracle-5.4<5.4.0-1144.154~18.04.1

5.4.0-1144.154~18.04.1

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<5.4.0-216.236

5.4.0-216.236

ubuntu/linux-aws<5.4.0-1146.156

5.4.0-1146.156

ubuntu/linux-aws-5.15<5.15.0-1084.91~20.04.1

5.15.0-1084.91~20.04.1

ubuntu/linux-azure<5.4.0-1151.158

5.4.0-1151.158

ubuntu/linux-azure-5.15<5.15.0-1089.98~20.04.1

5.15.0-1089.98~20.04.1

ubuntu/linux-bluefield<5.4.0-1105.112

5.4.0-1105.112

ubuntu/linux-gcp<5.4.0-1149.158

5.4.0-1149.158

ubuntu/linux-gcp-5.15<5.15.0-1083.92~20.04.1

5.15.0-1083.92~20.04.1

ubuntu/linux-ibm<5.4.0-1092.97

5.4.0-1092.97

ubuntu/linux-ibm-5.15<5.15.0-1076.79~20.04.1

5.15.0-1076.79~20.04.1

ubuntu/linux-intel-iotg-5.15<5.15.0-1079.85~20.04.1

5.15.0-1079.85~20.04.1

ubuntu/linux-kvm<5.4.0-1133.142

5.4.0-1133.142

ubuntu/linux-lowlatency-hwe-5.15<5.15.0-140.150~20.04.1

5.15.0-140.150~20.04.1

ubuntu/linux-oracle<5.4.0-1144.154

5.4.0-1144.154

ubuntu/linux-oracle-5.15<5.15.0-1081.87~20.04.1

5.15.0-1081.87~20.04.1

ubuntu/linux-raspi<5.4.0-1129.142

5.4.0-1129.142

ubuntu/linux-riscv-5.15<5.15.0-1079.83~20.04.1

5.15.0-1079.83~20.04.1

ubuntu/linux-xilinx-zynqmp<5.4.0-1064.68

5.4.0-1064.68

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-5.15<5.15.0-142.152~20.04.1

5.15.0-142.152~20.04.1

ubuntu/linux-hwe-5.8*

ubuntu/linux-intel-5.13*

ubuntu/linux-iot<5.4.0-1051.54

5.4.0-1051.54

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<5.4.0-1146.156+fips1

5.4.0-1146.156+fips1

ubuntu/linux-azure-fips<5.4.0-1151.158+fips1

5.4.0-1151.158+fips1

ubuntu/linux-fips<5.4.0-1120.130

5.4.0-1120.130

ubuntu/linux-gcp-fips<5.4.0-1149.158+fips1

5.4.0-1149.158+fips1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.15.0-140.150

5.15.0-140.150

ubuntu/linux-allwinner-5.19*

ubuntu/linux-aws<5.15.0-1084.91

5.15.0-1084.91

ubuntu/linux-aws-5.19*

ubuntu/linux-aws-6.2*

ubuntu/linux-aws-6.5*

ubuntu/linux-aws-6.8<6.8.0-1035.37~22.04.1

6.8.0-1035.37~22.04.1

ubuntu/linux-azure<5.15.0-1089.98

5.15.0-1089.98

ubuntu/linux-azure-5.19*

ubuntu/linux-azure-6.2*

ubuntu/linux-azure-6.5*

ubuntu/linux-azure-6.8<6.8.0-1034.39~22.04.1

6.8.0-1034.39~22.04.1

ubuntu/linux-azure-fde<5.15.0-1089.98.1

5.15.0-1089.98.1

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-gcp<5.15.0-1083.92

5.15.0-1083.92

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-gcp-6.5*

ubuntu/linux-gcp-6.8<6.8.0-1036.38~22.04.1

6.8.0-1036.38~22.04.1

ubuntu/linux-gke<5.15.0-1081.87

5.15.0-1081.87

ubuntu/linux-gkeop<5.15.0-1066.74

5.15.0-1066.74

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5*

ubuntu/linux-hwe-6.8<6.8.0-78.78~22.04.1

6.8.0-78.78~22.04.1

ubuntu/linux-ibm<5.15.0-1076.79

5.15.0-1076.79

ubuntu/linux-ibm-6.8<6.8.0-1033.33~22.04.1

6.8.0-1033.33~22.04.1

ubuntu/linux-intel-iot-realtime*

ubuntu/linux-intel-iotg<5.15.0-1079.85

5.15.0-1079.85

ubuntu/linux-kvm<5.15.0-1080.85

5.15.0-1080.85

ubuntu/linux-lowlatency<5.15.0-140.150

5.15.0-140.150

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5*

ubuntu/linux-lowlatency-hwe-6.8<6.8.0-78.78.1~22.04.1

6.8.0-78.78.1~22.04.1

ubuntu/linux-nvidia<5.15.0-1078.79

5.15.0-1078.79

ubuntu/linux-nvidia-6.2*

ubuntu/linux-nvidia-6.5*

ubuntu/linux-nvidia-6.8<6.8.0-1035.38~22.04.1

6.8.0-1035.38~22.04.1

ubuntu/linux-nvidia-tegra<5.15.0-1037.37

5.15.0-1037.37

ubuntu/linux-nvidia-tegra-igx<5.15.0-1026.26

5.15.0-1026.26

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1*

ubuntu/linux-oem-6.5*

ubuntu/linux-oracle<5.15.0-1081.87

5.15.0-1081.87

ubuntu/linux-oracle-6.5*

ubuntu/linux-oracle-6.8<6.8.0-1032.33~22.04.1

6.8.0-1032.33~22.04.1

ubuntu/linux-raspi<5.15.0-1078.81

5.15.0-1078.81

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.19*

ubuntu/linux-riscv-6.5*

ubuntu/linux-riscv-6.8<6.8.0-78.78~22.04.1

6.8.0-78.78~22.04.1

ubuntu/linux-starfive-5.19*

ubuntu/linux-starfive-6.2*

ubuntu/linux-starfive-6.5*

ubuntu/linux-xilinx-zynqmp<5.15.0-1050.54

5.15.0-1050.54

ubuntu/linux-bluefield<5.15.0-1066.68

5.15.0-1066.68

ubuntu/linux-intel-iot-realtime<5.15.0-1077.79

5.15.0-1077.79

ubuntu/linux-realtime<5.15.0-1084.93

5.15.0-1084.93

ubuntu/linux-realtime-6.8<6.8.1-1030.31~22.04.1

6.8.1-1030.31~22.04.1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips<5.15.0-1084.91+fips1

5.15.0-1084.91+fips1

ubuntu/linux-azure-fips<5.15.0-1089.98+fips1

5.15.0-1089.98+fips1

ubuntu/linux-fips<5.15.0-140.150+fips1

5.15.0-140.150+fips1

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

5.15.0-1083.92+fips1

ubuntu/linux<6.8.0-78.78

6.8.0-78.78

ubuntu/linux-aws<6.8.0-1035.37

6.8.0-1035.37

ubuntu/linux-azure<6.8.0-1034.39

6.8.0-1034.39

ubuntu/linux-azure-6.11<6.11.0-1015.15~24.04.1

6.11.0-1015.15~24.04.1

ubuntu/linux-azure-nvidia<6.8.0-1022.23

6.8.0-1022.23

ubuntu/linux-gcp<6.8.0-1036.38

6.8.0-1036.38

ubuntu/linux-gcp-6.11<6.11.0-1015.15~24.04.1

6.11.0-1015.15~24.04.1

ubuntu/linux-gke<6.8.0-1032.36

6.8.0-1032.36

ubuntu/linux-gkeop<6.8.0-1019.21

6.8.0-1019.21

ubuntu/linux-hwe-6.11<6.11.0-26.26~24.04.1

6.11.0-26.26~24.04.1

ubuntu/linux-ibm<6.8.0-1033.33

6.8.0-1033.33

ubuntu/linux-intel*

ubuntu/linux-lowlatency<6.8.0-78.78.1

6.8.0-78.78.1

ubuntu/linux-lowlatency-hwe-6.11<6.11.0-1014.15~24.04.1

6.11.0-1014.15~24.04.1

ubuntu/linux-nvidia<6.8.0-1035.38

6.8.0-1035.38

ubuntu/linux-nvidia-6.11<6.11.0-1010.10

6.11.0-1010.10

ubuntu/linux-nvidia-lowlatency<6.8.0-1035.38.1

6.8.0-1035.38.1

ubuntu/linux-nvidia-tegra<6.8.0-1009.9

6.8.0-1009.9

ubuntu/linux-oem-6.11<6.11.0-1022.22

6.11.0-1022.22

ubuntu/linux-oem-6.8*

ubuntu/linux-oracle<6.8.0-1032.33

6.8.0-1032.33

ubuntu/linux-raspi<6.8.0-1035.39

6.8.0-1035.39

ubuntu/linux-raspi-realtime*

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-xilinx<6.8.0-1017.18

6.8.0-1017.18

ubuntu/linux-raspi-realtime<6.8.0-2028.29

6.8.0-2028.29

ubuntu/linux-realtime<6.8.1-1030.31

6.8.1-1030.31

ubuntu/linux-fips<6.8.0-78.78+fips1

6.8.0-78.78+fips1

ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
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Fixed in 5.4.0-1146.156~18.04.1
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Fixed in 5.4.0-1151.158~18.04.1
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Fixed in 5.4.0-1149.158~18.04.1
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Fixed in 5.4.0-216.236~18.04.1
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Fixed in 5.4.0-1092.97~18.04.1
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Fixed in 5.4.0-1144.154~18.04.1
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Fixed in 5.4.0-1129.142~18.04.1
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Fixed in 5.4.0-216.236
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Fixed in 5.4.0-1146.156
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Fixed in 5.15.0-1084.91~20.04.1
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Fixed in 5.4.0-1151.158
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Fixed in 5.15.0-1089.98~20.04.1
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Fixed in 5.4.0-1105.112
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Fixed in 5.4.0-1149.158
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Fixed in 5.15.0-1083.92~20.04.1
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Fixed in 5.4.0-1092.97
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Fixed in 5.15.0-1076.79~20.04.1
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Fixed in 5.15.0-1079.85~20.04.1
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Fixed in 5.4.0-1133.142
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Fixed in 5.15.0-140.150~20.04.1
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Fixed in 5.4.0-1144.154
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Fixed in 5.15.0-1081.87~20.04.1
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Fixed in 5.4.0-1129.142
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Fixed in 5.15.0-1079.83~20.04.1
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Fixed in 5.4.0-1064.68
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Fixed in 5.15.0-142.152~20.04.1
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Fixed in 5.4.0-1051.54
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Fixed in 5.15.0-1039.39~20.04.1
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Fixed in 5.4.0-1146.156+fips1
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Fixed in 5.4.0-1151.158+fips1
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Fixed in 5.4.0-1120.130
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Fixed in 5.4.0-1149.158+fips1
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Fixed in 5.15.0-140.150
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Fixed in 5.15.0-1084.91
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Fixed in 6.8.0-1035.37~22.04.1
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Fixed in 5.15.0-1089.98
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Fixed in 6.8.0-1034.39~22.04.1
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Fixed in 5.15.0-1089.98.1
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Fixed in 5.15.0-1083.92
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Fixed in 6.8.0-1036.38~22.04.1
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Fixed in 5.15.0-1081.87
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Fixed in 5.15.0-1066.74
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Fixed in 6.8.0-78.78~22.04.1
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Fixed in 5.15.0-1076.79
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Fixed in 6.8.0-1033.33~22.04.1
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Fixed in 5.15.0-1079.85
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Fixed in 5.15.0-1080.85
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Fixed in 5.15.0-140.150
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Fixed in 6.8.0-78.78.1~22.04.1
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Fixed in 5.15.0-1078.79
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Fixed in 6.8.0-1035.38~22.04.1
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Fixed in 5.15.0-1037.37
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Fixed in 5.15.0-1026.26
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Fixed in 5.15.0-1081.87
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Fixed in 6.8.0-1032.33~22.04.1
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Fixed in 5.15.0-1078.81
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Fixed in 6.8.0-78.78~22.04.1
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Fixed in 5.15.0-1050.54
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Fixed in 5.15.0-1066.68
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Fixed in 5.15.0-1077.79
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Fixed in 5.15.0-1084.93
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Fixed in 6.8.1-1030.31~22.04.1
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Fixed in 5.15.0-1084.91+fips1
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Fixed in 5.15.0-1089.98+fips1
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Fixed in 5.15.0-140.150+fips1
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Fixed in 5.15.0-1083.92+fips1
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Fixed in 6.8.0-78.78
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Fixed in 6.8.0-1035.37
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Fixed in 6.8.0-1034.39
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Fixed in 6.11.0-1015.15~24.04.1
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Fixed in 6.8.0-1022.23
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Fixed in 6.8.0-1036.38
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Fixed in 6.11.0-1015.15~24.04.1
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Fixed in 6.8.0-1032.36
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Fixed in 6.8.0-1019.21
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Fixed in 6.11.0-26.26~24.04.1
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Fixed in 6.8.0-1033.33
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Fixed in 6.8.0-78.78.1
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Fixed in 6.11.0-1014.15~24.04.1
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Fixed in 6.8.0-1035.38
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Fixed in 6.11.0-1010.10
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Fixed in 6.8.0-1035.38.1
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Fixed in 6.8.0-1009.9
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Fixed in 6.11.0-1022.22
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Fixed in 6.8.0-1032.33
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Fixed in 6.8.0-1035.39
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Fixed in 6.8.0-1017.18
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Fixed in 6.8.0-2028.29
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Fixed in 6.8.1-1030.31
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Fixed in 6.8.0-78.78+fips1
Compensating control
In the arm64 cacheinfo loop, increment the cacheinfo array index for each populated cache leaf rather than for each populated cache level, accounting for separate data and instruction caches to prevent out-of-bounds writes.

Event History

Feb 27, 2025

CVE Published

via MITRE·02:18 AM

Data Sourced

via MITRE·02:18 AM

DescriptionSeverity

Data Sourced

via Red Hat·03:05 AM

DescriptionSeverityAffected Software

Data Sourced

via OSV·03:15 AM

DescriptionSeverityAffected Software

Data Sourced

via NVD·03:15 AM

RemedyDescriptionSeverityWeaknessAffected Software

Apr 9, 2025

Data Sourced

via Microsoft·07:00 AM

DescriptionSeverityWeakness

Data Sourced

via Microsoft·07:00 AM

Affected Software

Frequently Asked Questions

What is the severity of CVE-2025-21785?

CVE-2025-21785 is classified with a high severity level due to the risk of out-of-bounds writes that could potentially lead to memory corruption.

How do I fix CVE-2025-21785?

To fix CVE-2025-21785, update to the latest patched version of the Linux kernel provided by your operating system vendor.

What versions of the Linux kernel are affected by CVE-2025-21785?

CVE-2025-21785 affects certain versions of the Linux kernel where cache information processing does not properly validate bounds.

Can CVE-2025-21785 be exploited remotely?

Exploitation of CVE-2025-21785 typically requires local access to the system, making remote exploitation unlikely.

What are the implications of CVE-2025-21785 if left unpatched?

If left unpatched, CVE-2025-21785 could lead to system instability, data corruption, or unauthorized access to system resources.

CVE-2025-21785: arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array

Affected Software

Remediation

Event History

Frequently Asked Questions

What is the severity of CVE-2025-21785?

How do I fix CVE-2025-21785?

What versions of the Linux kernel are affected by CVE-2025-21785?

Can CVE-2025-21785 be exploited remotely?

What are the implications of CVE-2025-21785 if left unpatched?

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