CVE-2024-50218: ocfs2: pass u64 to ocfs2_truncate_inline maybe overflow

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-11-09 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: ocfs2: pass u64 to ocfs2_truncate_inline maybe overflow Syzbot reported a kernel BUG in ocfs2_truncate_inline. There are two reasons for this: first, the parameter value passed is greater than ocfs2_max_inline_data_with_xattr, second, the start and end parameters of ocfs2_truncate_inline are "unsigned int". So, we need to add a sanity check for byte_start and byte_len right before ocfs2_truncate_inline() in ocfs2_remove_inode_range(), if they are greater than ocfs2_max_inline_data_with_xattr return -EINVAL.

Affected products

Linux kernel: from 2.6.24 before 4.19.323; from 4.20 before 5.4.285; from 5.5 before 5.10.229; from 5.11 before 5.15.171; from 5.16 before 6.1.116; from 6.2 before 6.6.60 — fixed in 4.19.323, 5.10.229, 5.15.171, 5.4.285, 6.1.116, 6.11.7

How to fix

Upgrade to a fixed version: Linux kernel 4.19.323, 5.10.229, 5.15.171, 5.4.285. Check the vendor advisory for mitigations.

References

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