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CVE-2023-34256

Fixed in a distro release EPSS <1%CVSS 5.5

An issue was discovered in the Linux kernel before 6.3.3. There is an out-of-bounds read in crc16 in lib/crc16.c when called from fs/ext4/super.c because ext4_group_desc_csum does not properly check an offset. NOTE: this is disputed by third parties because the kernel is not intended to defend against attackers with the stated "When modifying the block device while it is mounted by the filesystem" access.

Published 2023-05-31 · CVE record · OSV

Products: linux_kernel, suse linux_enterprise, debian_linux

Distro releases

ReleasePackageFixed in
Amazon Linux 2kernel4.14.318-240.529.amzn2
Amazon Linux 2kernel-devel4.14.318-240.529.amzn2
Amazon Linux 2kernel-headers4.14.318-240.529.amzn2
Amazon Linux 2kernel-livepatch-4.14.318-240.5291.0-0.amzn2
Amazon Linux 2kernel-tools4.14.318-240.529.amzn2
Amazon Linux 2kernel-tools-devel4.14.318-240.529.amzn2
Amazon Linux 2perf4.14.318-240.529.amzn2
Amazon Linux 2python-perf4.14.318-240.529.amzn2
Amazon Linux 2023bpftool6.1.29-47.49.amzn2023
Amazon Linux 2023kernel6.1.29-47.49.amzn2023
Amazon Linux 2023kernel-devel6.1.29-47.49.amzn2023
Amazon Linux 2023kernel-headers6.1.29-47.49.amzn2023
Amazon Linux 2023kernel-libbpf6.1.29-47.49.amzn2023
Amazon Linux 2023kernel-libbpf-devel6.1.29-47.49.amzn2023
Amazon Linux 2023kernel-libbpf-static6.1.29-47.49.amzn2023
Amazon Linux 2023kernel-livepatch-6.1.29-47.491.0-0.amzn2023
Amazon Linux 2023kernel-tools6.1.29-47.49.amzn2023
Amazon Linux 2023kernel-tools-devel6.1.29-47.49.amzn2023
Amazon Linux 2023perf6.1.29-47.49.amzn2023
Amazon Linux 2023python3-perf6.1.29-47.49.amzn2023
Debian 10linux4.19.289-1
Debian 10linux-5.105.10.197-1~deb10u1
Debian 12linux6.1.37-1
Debian 13linux6.3.7-1
Debian 14linux6.3.7-1
Ubuntu 16.04 LTSlinux-hwe-edgeno fix
Ubuntu 18.04 LTSlinux-aws-5.0no fix
Ubuntu 18.04 LTSlinux-aws-5.3no fix
Ubuntu 18.04 LTSlinux-azureno fix
Ubuntu 18.04 LTSlinux-azure-5.3no fix
Ubuntu 18.04 LTSlinux-azure-edgeno fix
Ubuntu 18.04 LTSlinux-gcpno fix
Ubuntu 18.04 LTSlinux-gcp-5.3no fix
Ubuntu 18.04 LTSlinux-gke-4.15no fix
Ubuntu 18.04 LTSlinux-gke-5.4no fix
Ubuntu 18.04 LTSlinux-gkeop-5.4no fix
Ubuntu 18.04 LTSlinux-hweno fix
Ubuntu 18.04 LTSlinux-hwe-edgeno fix
Ubuntu 18.04 LTSlinux-oemno fix
Ubuntu 18.04 LTSlinux-oracle-5.0no fix
Ubuntu 18.04 LTSlinux-oracle-5.3no fix
Ubuntu 20.04 LTSlinux5.4.0-162.179
Ubuntu 20.04 LTSlinux-aws5.4.0-1109.118
Ubuntu 20.04 LTSlinux-aws-5.11no fix
Ubuntu 20.04 LTSlinux-aws-5.13no fix
Ubuntu 20.04 LTSlinux-aws-5.155.15.0-1044.49~20.04.1
Ubuntu 20.04 LTSlinux-aws-5.8no fix
Ubuntu 20.04 LTSlinux-azure-5.11no fix
Ubuntu 20.04 LTSlinux-azure-5.13no fix
Ubuntu 20.04 LTSlinux-azure-5.155.15.0-1046.53~20.04.1
Ubuntu 20.04 LTSlinux-azure-5.8no fix
Ubuntu 20.04 LTSlinux-azure-fdeno fix
Ubuntu 20.04 LTSlinux-bluefield5.4.0-1070.76
Ubuntu 20.04 LTSlinux-gcp5.4.0-1112.121
Ubuntu 20.04 LTSlinux-gcp-5.11no fix
Ubuntu 20.04 LTSlinux-gcp-5.13no fix
Ubuntu 20.04 LTSlinux-gcp-5.155.15.0-1041.49~20.04.1
Ubuntu 20.04 LTSlinux-gcp-5.8no fix
Ubuntu 20.04 LTSlinux-gkeno fix
Ubuntu 20.04 LTSlinux-gke-5.15no fix
Ubuntu 20.04 LTSlinux-gkeop5.4.0-1076.80
Ubuntu 20.04 LTSlinux-gkeop-5.155.15.0-1027.32~20.04.1
Ubuntu 20.04 LTSlinux-hwe-5.11no fix
Ubuntu 20.04 LTSlinux-hwe-5.13no fix
Ubuntu 20.04 LTSlinux-hwe-5.155.15.0-83.92~20.04.1
Ubuntu 20.04 LTSlinux-hwe-5.8no fix
Ubuntu 20.04 LTSlinux-ibm5.4.0-1056.61
Ubuntu 20.04 LTSlinux-ibm-5.155.15.0-1037.40~20.04.1
Ubuntu 20.04 LTSlinux-intel-5.13no fix
Ubuntu 20.04 LTSlinux-intel-iotg-5.155.15.0-1040.46~20.04.1
Ubuntu 20.04 LTSlinux-iot5.4.0-1021.22
Ubuntu 20.04 LTSlinux-kvm5.4.0-1098.104
Ubuntu 20.04 LTSlinux-lowlatency-hwe-5.155.15.0-83.92~20.04.1
Ubuntu 20.04 LTSlinux-nvidia-tegra-5.155.15.0-1017.17~20.04.1
Ubuntu 20.04 LTSlinux-oem-5.10no fix
Ubuntu 20.04 LTSlinux-oem-5.13no fix
Ubuntu 20.04 LTSlinux-oem-5.14no fix
Ubuntu 20.04 LTSlinux-oem-5.6no fix
Ubuntu 20.04 LTSlinux-oracle5.4.0-1108.117
Ubuntu 20.04 LTSlinux-oracle-5.11no fix
Ubuntu 20.04 LTSlinux-oracle-5.13no fix
Ubuntu 20.04 LTSlinux-oracle-5.155.15.0-1042.48~20.04.1
Ubuntu 20.04 LTSlinux-oracle-5.8no fix
Ubuntu 20.04 LTSlinux-raspi5.4.0-1093.104
Ubuntu 20.04 LTSlinux-raspi2no fix
Ubuntu 20.04 LTSlinux-riscvno fix
Ubuntu 20.04 LTSlinux-riscv-5.11no fix
Ubuntu 20.04 LTSlinux-riscv-5.155.15.0-1040.44~20.04.3
Ubuntu 20.04 LTSlinux-riscv-5.8no fix
Ubuntu 20.04 LTSlinux-xilinx-zynqmp5.4.0-1029.33
Ubuntu 22.04 LTSlinux5.15.0-83.92
Ubuntu 22.04 LTSlinux-allwinner-5.19no fix
Ubuntu 22.04 LTSlinux-aws5.15.0-1044.49
Ubuntu 22.04 LTSlinux-aws-5.19no fix
Ubuntu 22.04 LTSlinux-aws-6.26.2.0-1011.11~22.04.1
Ubuntu 22.04 LTSlinux-azure5.15.0-1046.53
Ubuntu 22.04 LTSlinux-azure-5.19no fix
Ubuntu 22.04 LTSlinux-azure-fde5.15.0-1046.53.1
Ubuntu 22.04 LTSlinux-azure-fde-5.19no fix
Ubuntu 22.04 LTSlinux-gcp5.15.0-1041.49
Ubuntu 22.04 LTSlinux-gcp-5.19no fix
Ubuntu 22.04 LTSlinux-gcp-6.26.2.0-1013.13~22.04.1
Ubuntu 22.04 LTSlinux-gke5.15.0-1041.46
Ubuntu 22.04 LTSlinux-gkeop5.15.0-1027.32
Ubuntu 22.04 LTSlinux-hwe-5.19no fix
Ubuntu 22.04 LTSlinux-hwe-6.26.2.0-32.32~22.04.1
Ubuntu 22.04 LTSlinux-ibm5.15.0-1037.40
Ubuntu 22.04 LTSlinux-intel-iotg5.15.0-1039.45
Ubuntu 22.04 LTSlinux-kvm5.15.0-1041.46
Ubuntu 22.04 LTSlinux-lowlatency5.15.0-83.92
Ubuntu 22.04 LTSlinux-lowlatency-hwe-5.19no fix
Ubuntu 22.04 LTSlinux-lowlatency-hwe-6.26.2.0-1012.12~22.04.1
Ubuntu 22.04 LTSlinux-nvidia5.15.0-1032.32
Ubuntu 22.04 LTSlinux-nvidia-6.26.2.0-1010.10
Ubuntu 22.04 LTSlinux-nvidia-tegra5.15.0-1017.17
Ubuntu 22.04 LTSlinux-nvidia-tegra-igx5.15.0-1004.4
Ubuntu 22.04 LTSlinux-oem-5.17no fix
Ubuntu 22.04 LTSlinux-oem-6.0no fix
Ubuntu 22.04 LTSlinux-oem-6.16.1.0-1014.14
Ubuntu 22.04 LTSlinux-oracle5.15.0-1042.48
Ubuntu 22.04 LTSlinux-raspi5.15.0-1037.40
Ubuntu 22.04 LTSlinux-realtimeno fix
Ubuntu 22.04 LTSlinux-riscvno fix
Ubuntu 22.04 LTSlinux-riscv-5.19no fix
Ubuntu 22.04 LTSlinux-starfive-5.19no fix
Ubuntu 22.04 LTSlinux-xilinx-zynqmp5.15.0-1025.29
Ubuntu 24.04 LTSlinux-raspi-realtimeno fix
Ubuntu Nvidia-BlueField 22.04 LTSlinux-bluefield5.15.0-1023.25
Ubuntu Pro 14.04 LTSlinuxno fix
Ubuntu Pro 14.04 LTSlinux-aws4.4.0-1129.135
Ubuntu Pro 14.04 LTSlinux-azure4.15.0-1175.190~14.04.1
Ubuntu Pro 14.04 LTSlinux-lts-xenial4.4.0-252.286~14.04.1
Ubuntu Pro 16.04 LTSlinux4.4.0-252.286
Ubuntu Pro 16.04 LTSlinux-aws4.4.0-1167.182
Ubuntu Pro 16.04 LTSlinux-aws-hwe4.15.0-1166.179~16.04.1
Ubuntu Pro 16.04 LTSlinux-azure4.15.0-1175.190~16.04.1
Ubuntu Pro 16.04 LTSlinux-gcp4.15.0-1160.177~16.04.1
Ubuntu Pro 16.04 LTSlinux-hwe4.15.0-223.235~16.04.1
Ubuntu Pro 16.04 LTSlinux-kvm4.4.0-1130.140
Ubuntu Pro 16.04 LTSlinux-oracle4.15.0-1129.140~16.04.1
Ubuntu Pro 18.04 LTSlinux4.15.0-223.235
Ubuntu Pro 18.04 LTSlinux-aws4.15.0-1166.179
Ubuntu Pro 18.04 LTSlinux-aws-5.45.4.0-1109.118~18.04.1
Ubuntu Pro 18.04 LTSlinux-azure-4.154.15.0-1175.190
Ubuntu Pro 18.04 LTSlinux-azure-5.4no fix
Ubuntu Pro 18.04 LTSlinux-gcp-4.154.15.0-1160.177
Ubuntu Pro 18.04 LTSlinux-gcp-5.45.4.0-1112.121~18.04.1
Ubuntu Pro 18.04 LTSlinux-hwe-5.45.4.0-162.179~18.04.1
Ubuntu Pro 18.04 LTSlinux-ibm-5.45.4.0-1056.61~18.04.1
Ubuntu Pro 18.04 LTSlinux-kvm4.15.0-1150.155
Ubuntu Pro 18.04 LTSlinux-oracle4.15.0-1129.140
Ubuntu Pro 18.04 LTSlinux-oracle-5.45.4.0-1108.117~18.04.1
Ubuntu Pro 18.04 LTSlinux-raspi-5.45.4.0-1093.104~18.04.1
Ubuntu Pro 20.04 LTSlinux-azureno fix
Ubuntu Pro FIPS-preview 22.04 LTSlinux-fipsno fix
Ubuntu Pro FIPS-updates 16.04 LTSlinux-fips4.4.0-1099.106
Ubuntu Pro FIPS-updates 18.04 LTSlinux-aws-fips4.15.0-2105.111
Ubuntu Pro FIPS-updates 18.04 LTSlinux-azure-fips4.15.0-2084.90
Ubuntu Pro FIPS-updates 18.04 LTSlinux-fips4.15.0-1121.132
Ubuntu Pro FIPS-updates 18.04 LTSlinux-gcp-fips4.15.0-2068.73
Ubuntu Pro FIPS-updates 20.04 LTSlinux-aws-fips5.4.0-1109.118+fips1
Ubuntu Pro FIPS-updates 20.04 LTSlinux-azure-fips5.4.0-1115.122+fips1
Ubuntu Pro FIPS-updates 20.04 LTSlinux-fips5.4.0-1084.93
Ubuntu Pro FIPS-updates 20.04 LTSlinux-gcp-fips5.4.0-1112.121+fips1
Ubuntu Pro FIPS 16.04 LTSlinux-fipsno fix
Ubuntu Pro FIPS 18.04 LTSlinux-aws-fipsno fix
Ubuntu Pro FIPS 18.04 LTSlinux-azure-fipsno fix
Ubuntu Pro FIPS 18.04 LTSlinux-fipsno fix
Ubuntu Pro FIPS 18.04 LTSlinux-gcp-fipsno fix
Ubuntu Pro FIPS 20.04 LTSlinux-aws-fipsno fix
Ubuntu Pro FIPS 20.04 LTSlinux-azure-fipsno fix
Ubuntu Pro FIPS 20.04 LTSlinux-fipsno fix
Ubuntu Pro FIPS 20.04 LTSlinux-gcp-fipsno fix
Ubuntu Pro Realtime 22.04 LTSlinux-intel-iot-realtime5.15.0-1038.40
Ubuntu Pro Realtime 22.04 LTSlinux-realtime5.15.0-1045.50