medium
5.5
CWE
125
Advisory Published
Updated

CVE-2023-34256

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 SoftwareAffected VersionHow 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
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~
6.4~
ubuntu/linux<4.4.0-252.286
4.4.0-252.286
ubuntu/linux-allwinner<6.4~
6.4~
ubuntu/linux-allwinner-5.19<6.4~
6.4~
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<6.5.0-1004.4
6.5.0-1004.4
ubuntu/linux-aws<4.4.0-1129.135
4.4.0-1129.135
ubuntu/linux-aws<6.4~
6.4~
ubuntu/linux-aws<4.4.0-1167.182
4.4.0-1167.182
ubuntu/linux-aws-5.0<6.4~
6.4~
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~
6.4~
ubuntu/linux-aws-5.19<6.4~
6.4~
ubuntu/linux-aws-5.4<6.4~
6.4~
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~
6.4~
ubuntu/linux-aws-hwe<6.4~
6.4~
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<6.5.0-1003.3
6.5.0-1003.3
ubuntu/linux-azure<4.15.0-1175.190~14.04.1
4.15.0-1175.190~14.04.1
ubuntu/linux-azure<6.4~
6.4~
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~
6.4~
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~
6.4~
ubuntu/linux-azure-5.4<6.4~
6.4~
ubuntu/linux-azure-edge<6.4~
6.4~
ubuntu/linux-azure-fde<5.15.0-1046.53
5.15.0-1046.53
ubuntu/linux-azure-fde<6.4~
6.4~
ubuntu/linux-azure-fde-5.15<5.15.0-1046.53~20.04.1
5.15.0-1046.53~20.04.1
ubuntu/linux-azure-fde-5.15<6.4~
6.4~
ubuntu/linux-azure-fde-5.19<6.4~
6.4~
ubuntu/linux-bluefield<5.4.0-1070.76
5.4.0-1070.76
ubuntu/linux-bluefield<6.4~
6.4~
ubuntu/linux-dell300x<6.4~
6.4~
ubuntu/linux-fips<6.4~
6.4~
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<6.5.0-1003.3
6.5.0-1003.3
ubuntu/linux-gcp<6.4~
6.4~
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~
6.4~
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~
6.4~
ubuntu/linux-gcp-5.19<6.4~
6.4~
ubuntu/linux-gcp-5.4<6.4~
6.4~
ubuntu/linux-gcp-6.2<6.2.0-1013.13~22.04.1
6.2.0-1013.13~22.04.1
ubuntu/linux-gke<5.15.0-1041.46
5.15.0-1041.46
ubuntu/linux-gke<6.4~
6.4~
ubuntu/linux-gke-4.15<6.4~
6.4~
ubuntu/linux-gke-5.0<6.4~
6.4~
ubuntu/linux-gke-5.15<6.4~
6.4~
ubuntu/linux-gke-5.4<6.4~
6.4~
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~
6.4~
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~
6.4~
ubuntu/linux-gkeop-5.4<6.4~
6.4~
ubuntu/linux-hwe<6.4~
6.4~
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~
6.4~
ubuntu/linux-hwe-5.4<6.4~
6.4~
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~
6.4~
ubuntu/linux-hwe-edge<6.4~
6.4~
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~
6.4~
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~
6.4~
ubuntu/linux-ibm-5.4<6.4~
6.4~
ubuntu/linux-intel-5.13<6.4~
6.4~
ubuntu/linux-intel-iotg<5.15.0-1039.44
5.15.0-1039.44
ubuntu/linux-intel-iotg<6.4~
6.4~
ubuntu/linux-intel-iotg-5.15<6.4~
6.4~
ubuntu/linux-iot<5.4.0-1021.22
5.4.0-1021.22
ubuntu/linux-iot<6.4~
6.4~
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~
6.4~
ubuntu/linux-kvm<4.4.0-1130.140
4.4.0-1130.140
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~
6.4~
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~
6.4~
ubuntu/linux-lowlatency-hwe-5.19<6.4~
6.4~
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~
6.4~
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~
6.4~
ubuntu/linux-nvidia<5.15.0-1032.32
5.15.0-1032.32
ubuntu/linux-nvidia<6.4~
6.4~
ubuntu/linux-oem<6.4~
6.4~
ubuntu/linux-oem-5.10<6.4~
6.4~
ubuntu/linux-oem-5.14<6.4~
6.4~
ubuntu/linux-oem-5.17<6.4~
6.4~
ubuntu/linux-oem-5.6<6.4~
6.4~
ubuntu/linux-oem-6.0<6.4~
6.4~
ubuntu/linux-oem-6.1<6.1.0-1014.14
6.1.0-1014.14
ubuntu/linux-oem-6.1<6.4~
6.4~
ubuntu/linux-oem-osp1<6.4~
6.4~
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<6.5.0-1004.4
6.5.0-1004.4
ubuntu/linux-oracle<6.4~
6.4~
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~
6.4~
ubuntu/linux-oracle-5.13<6.4~
6.4~
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~
6.4~
ubuntu/linux-oracle-5.4<6.4~
6.4~
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<6.5.0-1001.1
6.5.0-1001.1
ubuntu/linux-raspi<6.4~
6.4~
ubuntu/linux-raspi-5.4<6.4~
6.4~
ubuntu/linux-raspi2<6.4~
6.4~
ubuntu/linux-riscv<6.2.0-32.32.2
6.2.0-32.32.2
ubuntu/linux-riscv<6.4~
6.4~
ubuntu/linux-riscv-5.15<5.15.0-1040.44~20.04.2
5.15.0-1040.44~20.04.2
ubuntu/linux-riscv-5.15<6.4~
6.4~
ubuntu/linux-snapdragon<6.4~
6.4~
ubuntu/linux-starfive<6.2.0-1004.5
6.2.0-1004.5
ubuntu/linux-starfive<6.4~
6.4~
ubuntu/linux-starfive-5.19<6.4~
6.4~
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~
6.4~
Debian Debian Linux=10.0
debian/linux<=4.19.249-2
4.19.304-1
5.10.209-2
5.10.216-1
6.1.76-1
6.1.90-1
6.7.12-1
6.8.9-1
debian/linux-5.10
5.10.216-1~deb10u1

Remedy

https://bugzilla.suse.com/show_bug.cgi?id=1211895

Remedy

https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.3

Remedy

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f04351888a83e595571de672e0a4a8b74f4fb31

Remedy

https://syzkaller.appspot.com/bug?extid=8785e41224a3afd04321

Remedy

https://git.kernel.org/linus/717d50e4971b81b96c0199c91cdf0039a8cb181a

Remedy

https://git.kernel.org/linus/4f04351888a83e595571de672e0a4a8b74f4fb31

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2023-34256.

  • What is the severity of CVE-2023-34256?

    CVE-2023-34256 has a severity rating of 5.5 (medium).

  • Which software is affected by CVE-2023-34256?

    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.

  • What is the CWE-ID associated with CVE-2023-34256?

    The CWE-ID associated with CVE-2023-34256 is CWE-125.

  • Are there any references available for CVE-2023-34256?

    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)

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