Vulnerability CVE-2023-34256
Published: 2023-05-31

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.

 References:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f04351888a83e595571de672e0a4a8b74f4fb31
https://syzkaller.appspot.com/bug?extid=8785e41224a3afd04321
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.3
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