CVE-2023-34256
Severity
5.5MEDIUM
EPSS
0.0%
top 96.51%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMay 31
Latest updateApr 9
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6
Affected Packages2 packages
Also affects: Debian Linux 10.0, Linux Enterprise 12.0, 15.0