CVE-2025-38333

f2fs: fix to bail out in get_new_segment()

State: Published
Severity: 7.8 High
Published: Jul 10, 2025
Updated: Aug 5, 2026
Reserved: Apr 16, 2025

Description

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

f2fs: fix to bail out in get_new_segment()

------------[ cut here ]------------ WARNING: CPU: 3 PID: 579 at fs/f2fs/segment.c:2832 new_curseg+0x5e8/0x6dc pc : new_curseg+0x5e8/0x6dc Call trace: new_curseg+0x5e8/0x6dc f2fs_allocate_data_block+0xa54/0xe28 do_write_page+0x6c/0x194 f2fs_do_write_node_page+0x38/0x78 __write_node_page+0x248/0x6d4 f2fs_sync_node_pages+0x524/0x72c f2fs_write_checkpoint+0x4bc/0x9b0 __checkpoint_and_complete_reqs+0x80/0x244 issue_checkpoint_thread+0x8c/0xec kthread+0x114/0x1bc ret_from_fork+0x10/0x20

get_new_segment() detects inconsistent status in between free_segmap and free_secmap, let's record such error into super block, and bail out get_new_segment() instead of continue using the segment.

Scores

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

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	98e4da8ca301e062d79ae168c67e56f3c3de3ce4 to before f0023d7a2a86999c8e1300e911d92f995a5310a8Affected 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 to before ca860f507a61c7c3d4dde47b830a5c0d555cf83cAffected 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 to before bb5eb8a5b222fa5092f60d5555867a05ebc3bdf2Affected
LinuxLinux	3.8Affected before 3.8Not affected 6.12.35 through 6.12.Not affected 6.15.4 through 6.15.Not affected 6.16 and laterNot affected

References

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