CVE-2023-3268: High severity Linux Linux kernel vulnerability
An out of bounds (OOB) memory access flaw was found in the Linux kernel in relayfilereadstartpos in kernel/relay.c in the relayfs. This flaw could allow a local attacker to crash the system or leak kernel internal information.
Other sources
Linux Kernel is vulnerable to a denial of service, caused by an out-of-bounds memory access flaw in the relayfilereadstartpos function in kernel/relay.c in the relayfs. By sending a specially crafted request, a local authenticated attacker could exploit this vulnerability to cause the system to crash or obtain sensitive information.
— IBM
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
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redhat/Kernelto a version that resolves this vulnerability.Fixed in 6.4 - Upgrade
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ubuntu/linux-awsto a version that resolves this vulnerability.Fixed in 4.4.0-1121.127 - Upgrade
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ubuntu/linux-azureto a version that resolves this vulnerability.Fixed in 4.15.0-1168.183~14.04.1 - Upgrade
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ubuntu/linux-lts-xenialto a version that resolves this vulnerability.Fixed in 4.4.0-243.277~14.04.1 - Upgrade
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ubuntu/linuxto a version that resolves this vulnerability.Fixed in 4.4.0-243.277 - Upgrade
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ubuntu/linux-awsto a version that resolves this vulnerability.Fixed in 4.4.0-1159.174 - Upgrade
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ubuntu/linux-aws-hweto a version that resolves this vulnerability.Fixed in 4.15.0-1159.172~16.04.1 - Upgrade
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ubuntu/linux-azureto a version that resolves this vulnerability.Fixed in 4.15.0-1168.183~16.04.1 - Upgrade
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ubuntu/linux-gcpto a version that resolves this vulnerability.Fixed in 4.15.0-1153.170~16.04.1 - Upgrade
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ubuntu/linux-hweto a version that resolves this vulnerability.Fixed in 4.15.0-214.225~16.04.1 - Upgrade
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ubuntu/linux-kvmto a version that resolves this vulnerability.Fixed in 4.4.0-1122.132 - Upgrade
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ubuntu/linux-oracleto a version that resolves this vulnerability.Fixed in 4.15.0-1122.133~16.04.1 - Upgrade
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ubuntu/linux-fipsto a version that resolves this vulnerability.Fixed in 4.4.0-1091.98 - Upgrade
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ubuntu/linuxto a version that resolves this vulnerability.Fixed in 4.15.0-214.225 - Upgrade
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ubuntu/linux-awsto a version that resolves this vulnerability.Fixed in 4.15.0-1159.172 - Upgrade
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ubuntu/linux-aws-5.4to a version that resolves this vulnerability.Fixed in 5.4.0-1109.118~18.04.1 - Upgrade
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ubuntu/linux-azure-4.15to a version that resolves this vulnerability.Fixed in 4.15.0-1168.183 - Upgrade
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ubuntu/linux-azure-5.4to a version that resolves this vulnerability.Fixed in 5.4.0-1115.122~18.04.1 - Upgrade
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ubuntu/linux-gcp-4.15to a version that resolves this vulnerability.Fixed in 4.15.0-1153.170 - Upgrade
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ubuntu/linux-gcp-5.4to a version that resolves this vulnerability.Fixed in 5.4.0-1112.121~18.04.1 - Upgrade
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ubuntu/linux-hwe-5.4to a version that resolves this vulnerability.Fixed in 5.4.0-162.179~18.04.1 - Upgrade
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ubuntu/linux-ibm-5.4to a version that resolves this vulnerability.Fixed in 5.4.0-1056.61~18.04.1 - Upgrade
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ubuntu/linux-kvmto a version that resolves this vulnerability.Fixed in 4.15.0-1143.148 - Upgrade
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ubuntu/linux-oracleto a version that resolves this vulnerability.Fixed in 4.15.0-1122.133 - Upgrade
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ubuntu/linux-oracle-5.4to a version that resolves this vulnerability.Fixed in 5.4.0-1108.117~18.04.1 - Upgrade
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ubuntu/linux-raspi-5.4to a version that resolves this vulnerability.Fixed in 5.4.0-1093.104~18.04.1 - Upgrade
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ubuntu/linux-aws-fipsto a version that resolves this vulnerability.Fixed in 4.15.0-2098.104 - Upgrade
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ubuntu/linux-azure-fipsto a version that resolves this vulnerability.Fixed in 4.15.0-2077.83 - Upgrade
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ubuntu/linux-fipsto a version that resolves this vulnerability.Fixed in 4.15.0-1114.125 - Upgrade
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ubuntu/linux-gcp-fipsto a version that resolves this vulnerability.Fixed in 4.15.0-2061.66 - Upgrade
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ubuntu/linuxto a version that resolves this vulnerability.Fixed in 5.4.0-162.179 - Upgrade
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ubuntu/linux-awsto a version that resolves this vulnerability.Fixed in 5.4.0-1109.118 - Upgrade
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ubuntu/linux-aws-5.15to a version that resolves this vulnerability.Fixed in 5.15.0-1041.46~20.04.1 - Upgrade
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ubuntu/linux-azureto a version that resolves this vulnerability.Fixed in 5.4.0-1115.122 - Upgrade
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ubuntu/linux-azure-5.15to a version that resolves this vulnerability.Fixed in 5.15.0-1045.52~20.04.1 - Upgrade
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ubuntu/linux-bluefieldto a version that resolves this vulnerability.Fixed in 5.4.0-1070.76 - Upgrade
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ubuntu/linux-gcpto a version that resolves this vulnerability.Fixed in 5.4.0-1112.121 - Upgrade
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ubuntu/linux-gcp-5.15to a version that resolves this vulnerability.Fixed in 5.15.0-1039.47~20.04.1 - Upgrade
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ubuntu/linux-gke-5.15to a version that resolves this vulnerability.Fixed in 5.15.0-1039.44~20.04.1 - Upgrade
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ubuntu/linux-gkeopto a version that resolves this vulnerability.Fixed in 5.4.0-1076.80 - Upgrade
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ubuntu/linux-gkeop-5.15to a version that resolves this vulnerability.Fixed in 5.15.0-1025.30~20.04.1 - Upgrade
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ubuntu/linux-hwe-5.15to a version that resolves this vulnerability.Fixed in 5.15.0-79.86~20.04.2 - Upgrade
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ubuntu/linux-ibmto a version that resolves this vulnerability.Fixed in 5.4.0-1056.61 - Upgrade
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ubuntu/linux-ibm-5.15to a version that resolves this vulnerability.Fixed in 5.15.0-1036.39~20.04.1 - Upgrade
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ubuntu/linux-intel-iotg-5.15to a version that resolves this vulnerability.Fixed in 5.15.0-1037.42~20.04.1 - Upgrade
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ubuntu/linux-iotto a version that resolves this vulnerability.Fixed in 5.4.0-1021.22 - Upgrade
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ubuntu/linux-kvmto a version that resolves this vulnerability.Fixed in 5.4.0-1098.104 - Upgrade
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ubuntu/linux-lowlatency-hwe-5.15to a version that resolves this vulnerability.Fixed in 5.15.0-79.88~20.04.1 - Upgrade
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ubuntu/linux-nvidia-tegra-5.15to a version that resolves this vulnerability.Fixed in 5.15.0-1016.16~20.04.1 - Upgrade
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ubuntu/linux-oracleto a version that resolves this vulnerability.Fixed in 5.4.0-1108.117 - Upgrade
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ubuntu/linux-oracle-5.15to a version that resolves this vulnerability.Fixed in 5.15.0-1040.46~20.04.1 - Upgrade
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ubuntu/linux-raspito a version that resolves this vulnerability.Fixed in 5.4.0-1093.104 - Upgrade
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ubuntu/linux-riscv-5.15to a version that resolves this vulnerability.Fixed in 5.15.0-1038.42~20.04.2 - Upgrade
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ubuntu/linux-xilinx-zynqmpto a version that resolves this vulnerability.Fixed in 5.4.0-1029.33 - Upgrade
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ubuntu/linux-aws-fipsto a version that resolves this vulnerability.Fixed in 5.4.0-1109.118+fips1 - Upgrade
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ubuntu/linux-azure-fipsto a version that resolves this vulnerability.Fixed in 5.4.0-1115.122+fips1 - Upgrade
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ubuntu/linux-fipsto a version that resolves this vulnerability.Fixed in 5.4.0-1084.93 - Upgrade
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ubuntu/linux-gcp-fipsto a version that resolves this vulnerability.Fixed in 5.4.0-1112.121+fips1 - Upgrade
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ubuntu/linuxto a version that resolves this vulnerability.Fixed in 5.15.0-79.86 - Upgrade
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ubuntu/linux-awsto a version that resolves this vulnerability.Fixed in 5.15.0-1042.47 - Upgrade
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ubuntu/linux-aws-6.2to a version that resolves this vulnerability.Fixed in 6.2.0-1009.9~22.04.3 - Upgrade
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ubuntu/linux-azureto a version that resolves this vulnerability.Fixed in 5.15.0-1045.52 - Upgrade
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ubuntu/linux-azure-fdeto a version that resolves this vulnerability.Fixed in 5.15.0-1044.51.1 - Upgrade
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ubuntu/linux-gcpto a version that resolves this vulnerability.Fixed in 5.15.0-1039.47 - Upgrade
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ubuntu/linux-gcp-6.2to a version that resolves this vulnerability.Fixed in 6.2.0-1011.11~22.04.1 - Upgrade
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ubuntu/linux-gketo a version that resolves this vulnerability.Fixed in 5.15.0-1039.44 - Upgrade
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ubuntu/linux-gkeopto a version that resolves this vulnerability.Fixed in 5.15.0-1025.30 - Upgrade
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ubuntu/linux-hwe-6.2to a version that resolves this vulnerability.Fixed in 6.2.0-31.31~22.04.1 - Upgrade
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ubuntu/linux-ibmto a version that resolves this vulnerability.Fixed in 5.15.0-1035.38 - Upgrade
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ubuntu/linux-intel-iotgto a version that resolves this vulnerability.Fixed in 5.15.0-1037.42 - Upgrade
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ubuntu/linux-kvmto a version that resolves this vulnerability.Fixed in 5.15.0-1039.44 - Upgrade
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ubuntu/linux-lowlatencyto a version that resolves this vulnerability.Fixed in 5.15.0-79.88 - Upgrade
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ubuntu/linux-lowlatency-hwe-6.2to a version that resolves this vulnerability.Fixed in 6.2.0-1011.11~22.04.1 - Upgrade
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ubuntu/linux-nvidiato a version that resolves this vulnerability.Fixed in 5.15.0-1030.30 - Upgrade
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ubuntu/linux-nvidia-6.2to a version that resolves this vulnerability.Fixed in 6.2.0-1010.10 - Upgrade
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ubuntu/linux-nvidia-tegrato a version that resolves this vulnerability.Fixed in 5.15.0-1016.16 - Upgrade
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ubuntu/linux-nvidia-tegra-igxto a version that resolves this vulnerability.Fixed in 5.15.0-1002.2 - Upgrade
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ubuntu/linux-oem-6.1to a version that resolves this vulnerability.Fixed in 6.1.0-1014.14 - Upgrade
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ubuntu/linux-oracleto a version that resolves this vulnerability.Fixed in 5.15.0-1040.46 - Upgrade
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ubuntu/linux-raspito a version that resolves this vulnerability.Fixed in 5.15.0-1035.38 - Upgrade
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ubuntu/linux-xilinx-zynqmpto a version that resolves this vulnerability.Fixed in 5.15.0-1025.29 - Upgrade
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ubuntu/linux-bluefieldto a version that resolves this vulnerability.Fixed in 5.15.0-1022.24 - Upgrade
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ubuntu/linux-intel-iot-realtimeto a version that resolves this vulnerability.Fixed in 5.15.0-1036.38 - Upgrade
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ubuntu/linux-realtimeto a version that resolves this vulnerability.Fixed in 5.15.0-1043.48 - Upgrade
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debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.116-1Fixed in 7.2.15-1Fixed in 7.3.3-1
Event History
Frequently Asked Questions
What is the severity of CVE-2023-3268?
CVE-2023-3268 is classified as a high severity vulnerability due to its potential to crash systems and leak sensitive kernel information.
How do I fix CVE-2023-3268?
To fix CVE-2023-3268, update the Linux kernel to versions 6.4 or apply specific patches if using prior versions.
Who is affected by CVE-2023-3268?
CVE-2023-3268 affects systems running vulnerable versions of the Linux kernel, particularly those below version 6.4.
What type of vulnerability is CVE-2023-3268?
CVE-2023-3268 is an out of bounds memory access vulnerability found in the relayfs of the Linux kernel.
Can CVE-2023-3268 be exploited remotely?
CVE-2023-3268 requires local access for exploitation, meaning a local attacker could leverage the vulnerability.