vulnerability
Oracle Linux: (CVE-2023-34256) (Multiple Advisories): Unbreakable Enterprise kernel security update
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | May 31, 2023 | Jul 4, 2023 | Jan 28, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
May 31, 2023
Added
Jul 4, 2023
Modified
Jan 28, 2025
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. 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.
Solutions
oracle-linux-upgrade-kernel-uekoracle-linux-upgrade-kernel-uek-debugoracle-linux-upgrade-kernel-uek-debug-develoracle-linux-upgrade-kernel-uek-develoracle-linux-upgrade-kernel-uek-docoracle-linux-upgrade-kernel-uek-firmware
References
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.