CVE-2023-34256
Public on 2023-05-31
Modified on 2024-04-22
Description
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.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | kernel | 2023-06-21 | ALAS-2023-1773 | Fixed |
| Amazon Linux 2 - Core | kernel | 2023-06-21 | ALAS2-2023-2100 | Fixed |
| Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2023-06-21 | ALAS2KERNEL-5.10-2023-034 | Fixed |
| Amazon Linux 2 - Kernel-5.15 Extra | kernel | 2023-06-21 | ALAS2KERNEL-5.15-2023-021 | Fixed |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2023-06-21 | ALAS2KERNEL-5.4-2023-047 | Fixed |
| Amazon Linux 2023 | kernel | 2023-05-25 | ALAS2023-2023-184 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 4.0 | CVSSv3.1:AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVD | CVSSv3 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |