CVE-2022-50082

ext4: fix warning in ext4_iomap_begin as race between bmap and write

State: Published
Severity: Not scored
Published: Jun 18, 2025
Updated: May 11, 2026
Reserved: Jun 18, 2025

Description

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

ext4: fix warning in ext4_iomap_begin as race between bmap and write

We got issue as follows: ------------[ cut here ]------------ WARNING: CPU: 3 PID: 9310 at fs/ext4/inode.c:3441 ext4_iomap_begin+0x182/0x5d0 RIP: 0010:ext4_iomap_begin+0x182/0x5d0 RSP: 0018:ffff88812460fa08 EFLAGS: 00010293 RAX: ffff88811f168000 RBX: 0000000000000000 RCX: ffffffff97793c12 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: ffff88812c669160 R08: ffff88811f168000 R09: ffffed10258cd20f R10: ffff88812c669077 R11: ffffed10258cd20e R12: 0000000000000001 R13: 00000000000000a4 R14: 000000000000000c R15: ffff88812c6691ee FS: 00007fd0d6ff3740(0000) GS:ffff8883af180000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd0d6dda290 CR3: 0000000104a62000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: iomap_apply+0x119/0x570 iomap_bmap+0x124/0x150 ext4_bmap+0x14f/0x250 bmap+0x55/0x80 do_vfs_ioctl+0x952/0xbd0 __x64_sys_ioctl+0xc6/0x170 do_syscall_64+0x33/0x40 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Above issue may happen as follows: bmap write bmap ext4_bmap iomap_bmap ext4_iomap_begin ext4_file_write_iter ext4_buffered_write_iter generic_perform_write ext4_da_write_begin ext4_da_write_inline_data_begin ext4_prepare_inline_data ext4_create_inline_data ext4_set_inode_flag(inode, EXT4_INODE_INLINE_DATA); if (WARN_ON_ONCE(ext4_has_inline_data(inode))) ->trigger bug_on

To solved above issue hold inode lock in ext4_bamp.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	ac58e4fb03f9d111d733a4ad379d06eef3a24705 to before e1682c7171a6c0ff576fe8116b8cba5b8f538b94Affected ac58e4fb03f9d111d733a4ad379d06eef3a24705 to before 30dfb75e1f8645404a536c74d468d498adcd4e74Affected ac58e4fb03f9d111d733a4ad379d06eef3a24705 to before a9fe6d1e3d343d7309f501b1f48020ce7127221fAffected ac58e4fb03f9d111d733a4ad379d06eef3a24705 to before fa6482f374fda29a71ad44d76d35b4842d43cda4Affected ac58e4fb03f9d111d733a4ad379d06eef3a24705 to before 51ae846cff568c8c29921b1b28eb2dfbcd4ac12dAffected
LinuxLinux	5.7Affected before 5.7Not affected 5.10.137 through 5.10.Not affected 5.15.61 through 5.15.Not affected 5.18.18 through 5.18.Not affected 5.19.2 through 5.19.Not affected 6.0 and laterNot affected

Product

Versions

LinuxLinux

ac58e4fb03f9d111d733a4ad379d06eef3a24705 to before e1682c7171a6c0ff576fe8116b8cba5b8f538b94Affected
ac58e4fb03f9d111d733a4ad379d06eef3a24705 to before 30dfb75e1f8645404a536c74d468d498adcd4e74Affected
ac58e4fb03f9d111d733a4ad379d06eef3a24705 to before a9fe6d1e3d343d7309f501b1f48020ce7127221fAffected
ac58e4fb03f9d111d733a4ad379d06eef3a24705 to before fa6482f374fda29a71ad44d76d35b4842d43cda4Affected
ac58e4fb03f9d111d733a4ad379d06eef3a24705 to before 51ae846cff568c8c29921b1b28eb2dfbcd4ac12dAffected

LinuxLinux

5.7Affected
before 5.7Not affected
5.10.137 through 5.10.*Not affected
5.15.61 through 5.15.*Not affected
5.18.18 through 5.18.*Not affected
5.19.2 through 5.19.*Not affected
6.0 and laterNot affected

References

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