CVE-2022-50869

fs/ntfs3: Fix slab-out-of-bounds in r_page

State: Published
Severity: 7.8 High
Published: Dec 30, 2025
Updated: Aug 5, 2026
Reserved: Dec 30, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

fs/ntfs3: Fix slab-out-of-bounds in r_page

When PAGE_SIZE is 64K, if read_log_page is called by log_read_rst for the first time, the size of *buffer would be equal to DefaultLogPageSize(4K).But for *buffer operations like memcpy, if the memory area size(n) which being assigned to buffer is larger than 4K (log->page_size(64K) or bytes(64K-page_off)), it will cause an out of boundary error. Call trace: [...] kasan_report+0x44/0x130 check_memory_region+0xf8/0x1a0 memcpy+0xc8/0x100 ntfs_read_run_nb+0x20c/0x460 read_log_page+0xd0/0x1f4 log_read_rst+0x110/0x75c log_replay+0x1e8/0x4aa0 ntfs_loadlog_and_replay+0x290/0x2d0 ntfs_fill_super+0x508/0xec0 get_tree_bdev+0x1fc/0x34c [...]

Fix this by setting variable r_page to NULL in log_read_rst.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	b46acd6a6a627d876898e1c84d3f84902264b445 to before ed686e7a26dd19ae6b46bb662f735acfa88ff7bcAffected b46acd6a6a627d876898e1c84d3f84902264b445 to before bf86a640a34947d92062996e1a75b9cd9d83dd19Affected b46acd6a6a627d876898e1c84d3f84902264b445 to before 6d076293e5bffdf897ea5f975669206e09beed6aAffected b46acd6a6a627d876898e1c84d3f84902264b445 to before ecfbd57cf9c5ca225184ae266ce44ae473792132Affected
LinuxLinux	5.15Affected before 5.15Not affected 5.15.87 through 5.15.Not affected 6.0.17 through 6.0.Not affected 6.1.3 through 6.1.*Not affected 6.2 and laterNot affected

References

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