First published: Wed May 31 2023(Updated: )
** DISPUTED ** 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.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
Affected Software | Affected Version | How to fix |
---|---|---|
Linux Linux kernel | <6.3.3 | |
SUSE Linux Enterprise | =12.0-sp5 | |
SUSE Linux Enterprise | =15.0-sp4 | |
SUSE Linux Enterprise | =15.0-sp5 | |
Debian Debian Linux | =10.0 | |
ubuntu/linux | <4.15.0-223.235 | 4.15.0-223.235 |
ubuntu/linux | <5.4.0-162.179 | 5.4.0-162.179 |
ubuntu/linux | <5.15.0-83.92 | 5.15.0-83.92 |
ubuntu/linux | <6.2.0-32.32 | 6.2.0-32.32 |
ubuntu/linux | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux | <4.4.0-252.286 | 4.4.0-252.286 |
ubuntu/linux-allwinner | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-allwinner-5.19 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-aws | <4.15.0-1166.179 | 4.15.0-1166.179 |
ubuntu/linux-aws | <5.4.0-1109.118 | 5.4.0-1109.118 |
ubuntu/linux-aws | <5.15.0-1044.49 | 5.15.0-1044.49 |
ubuntu/linux-aws | <6.2.0-1011.11 | 6.2.0-1011.11 |
ubuntu/linux-aws | <4.4.0-1129.135 | 4.4.0-1129.135 |
ubuntu/linux-aws | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-aws | <4.4.0-1167.182 | 4.4.0-1167.182 |
ubuntu/linux-aws-5.0 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-aws-5.15 | <5.15.0-1044.49~20.04.1 | 5.15.0-1044.49~20.04.1 |
ubuntu/linux-aws-5.15 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-aws-5.19 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-aws-5.4 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-aws-6.2 | <6.2.0-1011.11~22.04.1 | 6.2.0-1011.11~22.04.1 |
ubuntu/linux-aws-6.2 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-aws-6.5 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-aws-fips | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-aws-hwe | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-aws-hwe | <4.15.0-1166.179~16.04.1 | 4.15.0-1166.179~16.04.1 |
ubuntu/linux-azure | <5.15.0-1046.53 | 5.15.0-1046.53 |
ubuntu/linux-azure | <6.2.0-1011.11 | 6.2.0-1011.11 |
ubuntu/linux-azure | <4.15.0-1175.190~14.04.1 | 4.15.0-1175.190~14.04.1 |
ubuntu/linux-azure | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-azure | <4.15.0-1175.190~16.04.1 | 4.15.0-1175.190~16.04.1 |
ubuntu/linux-azure-4.15 | <4.15.0-1175.190 | 4.15.0-1175.190 |
ubuntu/linux-azure-4.15 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-azure-5.15 | <5.15.0-1046.53~20.04.1 | 5.15.0-1046.53~20.04.1 |
ubuntu/linux-azure-5.15 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-azure-5.4 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-azure-6.5 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-azure-edge | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-azure-fde | <5.15.0-1046.53.1 | 5.15.0-1046.53.1 |
ubuntu/linux-azure-fde | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-azure-fde-5.15 | <5.15.0-1046.53~20.04.1.1 | 5.15.0-1046.53~20.04.1.1 |
ubuntu/linux-azure-fde-5.15 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-azure-fde-5.19 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-azure-fips | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-bluefield | <5.4.0-1070.76 | 5.4.0-1070.76 |
ubuntu/linux-bluefield | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-dell300x | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-fips | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-gcp | <5.4.0-1112.121 | 5.4.0-1112.121 |
ubuntu/linux-gcp | <5.15.0-1041.49 | 5.15.0-1041.49 |
ubuntu/linux-gcp | <6.2.0-1013.13 | 6.2.0-1013.13 |
ubuntu/linux-gcp | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-gcp | <4.15.0-1160.177~16.04.1 | 4.15.0-1160.177~16.04.1 |
ubuntu/linux-gcp-4.15 | <4.15.0-1160.177 | 4.15.0-1160.177 |
ubuntu/linux-gcp-4.15 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-gcp-5.15 | <5.15.0-1041.49~20.04.1 | 5.15.0-1041.49~20.04.1 |
ubuntu/linux-gcp-5.15 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-gcp-5.19 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-gcp-5.4 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-gcp-6.2 | <6.2.0-1013.13~22.04.1 | 6.2.0-1013.13~22.04.1 |
ubuntu/linux-gcp-6.5 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-gcp-fips | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-gke | <5.15.0-1041.46 | 5.15.0-1041.46 |
ubuntu/linux-gke | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-gke-4.15 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-gke-5.0 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-gke-5.15 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-gke-5.4 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-gkeop | <5.4.0-1076.80 | 5.4.0-1076.80 |
ubuntu/linux-gkeop | <5.15.0-1027.32 | 5.15.0-1027.32 |
ubuntu/linux-gkeop | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-gkeop-5.15 | <5.15.0-1027.32~20.04.1 | 5.15.0-1027.32~20.04.1 |
ubuntu/linux-gkeop-5.15 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-gkeop-5.4 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-hwe | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-hwe | <4.15.0-223.235~16.04.1 | 4.15.0-223.235~16.04.1 |
ubuntu/linux-hwe-5.15 | <5.15.0-83.92~20.04.1 | 5.15.0-83.92~20.04.1 |
ubuntu/linux-hwe-5.15 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-hwe-5.4 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-hwe-6.2 | <6.2.0-32.32~22.04.1 | 6.2.0-32.32~22.04.1 |
ubuntu/linux-hwe-6.2 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-hwe-6.5 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-hwe-edge | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-ibm | <5.4.0-1056.61 | 5.4.0-1056.61 |
ubuntu/linux-ibm | <5.15.0-1037.40 | 5.15.0-1037.40 |
ubuntu/linux-ibm | <6.2.0-1009.9 | 6.2.0-1009.9 |
ubuntu/linux-ibm | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-ibm-5.15 | <5.15.0-1037.40~20.04.1 | 5.15.0-1037.40~20.04.1 |
ubuntu/linux-ibm-5.15 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-ibm-5.4 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-intel | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-intel-5.13 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-intel-iotg | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-intel-iotg-5.15 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-iot | <5.4.0-1021.22 | 5.4.0-1021.22 |
ubuntu/linux-iot | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-kvm | <4.15.0-1150.155 | 4.15.0-1150.155 |
ubuntu/linux-kvm | <5.4.0-1098.104 | 5.4.0-1098.104 |
ubuntu/linux-kvm | <5.15.0-1041.46 | 5.15.0-1041.46 |
ubuntu/linux-kvm | <6.2.0-1012.12 | 6.2.0-1012.12 |
ubuntu/linux-kvm | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-kvm | <4.4.0-1130.140 | 4.4.0-1130.140 |
ubuntu/linux-laptop | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-lowlatency | <5.15.0-83.92 | 5.15.0-83.92 |
ubuntu/linux-lowlatency | <6.2.0-1012.12 | 6.2.0-1012.12 |
ubuntu/linux-lowlatency | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-lowlatency-hwe-5.15 | <5.15.0-83.92~20.04.1 | 5.15.0-83.92~20.04.1 |
ubuntu/linux-lowlatency-hwe-5.15 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-lowlatency-hwe-5.19 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-lowlatency-hwe-6.2 | <6.2.0-1012.12~22.04.1 | 6.2.0-1012.12~22.04.1 |
ubuntu/linux-lowlatency-hwe-6.2 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-lowlatency-hwe-6.5 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-lts-xenial | <4.4.0-252.286~14.04.1 | 4.4.0-252.286~14.04.1 |
ubuntu/linux-lts-xenial | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-nvidia | <5.15.0-1032.32 | 5.15.0-1032.32 |
ubuntu/linux-nvidia | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-nvidia-6.5 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oem | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oem-5.10 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oem-5.14 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oem-5.17 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oem-5.6 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oem-6.0 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oem-6.1 | <6.1.0-1014.14 | 6.1.0-1014.14 |
ubuntu/linux-oem-6.1 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oem-6.5 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oem-6.8 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oem-osp1 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oracle | <4.15.0-1129.140 | 4.15.0-1129.140 |
ubuntu/linux-oracle | <5.4.0-1108.117 | 5.4.0-1108.117 |
ubuntu/linux-oracle | <5.15.0-1042.48 | 5.15.0-1042.48 |
ubuntu/linux-oracle | <6.2.0-1011.11 | 6.2.0-1011.11 |
ubuntu/linux-oracle | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oracle | <4.15.0-1129.140~16.04.1 | 4.15.0-1129.140~16.04.1 |
ubuntu/linux-oracle-5.0 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oracle-5.13 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oracle-5.15 | <5.15.0-1042.48~20.04.1 | 5.15.0-1042.48~20.04.1 |
ubuntu/linux-oracle-5.15 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oracle-5.4 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-oracle-6.5 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-raspi | <5.4.0-1093.104 | 5.4.0-1093.104 |
ubuntu/linux-raspi | <5.15.0-1037.40 | 5.15.0-1037.40 |
ubuntu/linux-raspi | <6.2.0-1012.14 | 6.2.0-1012.14 |
ubuntu/linux-raspi | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-raspi-5.4 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-raspi2 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-riscv | <6.2.0-32.32.2 | 6.2.0-32.32.2 |
ubuntu/linux-riscv | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-riscv-5.15 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-riscv-6.5 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-snapdragon | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-starfive | <6.2.0-1004.5 | 6.2.0-1004.5 |
ubuntu/linux-starfive | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-starfive-5.19 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-starfive-6.5 | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
ubuntu/linux-xilinx-zynqmp | <5.4.0-1029.33 | 5.4.0-1029.33 |
ubuntu/linux-xilinx-zynqmp | <5.15.0-1025.29 | 5.15.0-1025.29 |
ubuntu/linux-xilinx-zynqmp | <6.4~<5.4.243<5.15.112 | 6.4~ 5.4.243 5.15.112 |
debian/linux | 5.10.218-1 5.10.221-1 6.1.94-1 6.1.99-1 6.9.9-1 6.9.10-1 |
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(Appears in the following advisories)
The vulnerability ID for this issue is CVE-2023-34256.
CVE-2023-34256 has a severity rating of 5.5 (medium).
Linux kernel versions before 6.3.3, Suse Linux Enterprise 12.0-sp5, Suse Linux Enterprise 15.0-sp4, and Suse Linux Enterprise 15.0-sp5 are affected by CVE-2023-34256.
The CWE-ID associated with CVE-2023-34256 is CWE-125.
Yes, you can find references for CVE-2023-34256 at the following links: [link1](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f04351888a83e595571de672e0a4a8b74f4fb31), [link2](https://syzkaller.appspot.com/bug?extid=8785e41224a3afd04321), [link3](https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.3)