CVE-2022-50082

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

HIGH

CVSS Score

Published: June 18, 2025 at 11:02 AM UTC

Updated: June 17, 2026 at 05:22 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7

Exploit prediction

EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

v < 5.10.1375.11 ≤ v < 5.15.615.16 ≤ v < 5.18.185.19 ≤ v < 5.19.25.7 ≤ v < 5.10.1375.7 ≤ v < 5.15.615.7 ≤ v < 5.18.185.7 ≤ v < 5.19.25.7 ≤ v < 6.05.7ac58e4fb03f9d111d733a4ad379d06eef3a24705

Vendor states this is fixed in 30dfb75e1f8645404a536c74d468d498adcd4e74 (fixed)

Vendor states this is fixed in 51ae846cff568c8c29921b1b28eb2dfbcd4ac12d (fixed)

Vendor states this is fixed in a9fe6d1e3d343d7309f501b1f48020ce7127221f (fixed)

Vendor states this is fixed in e1682c7171a6c0ff576fe8116b8cba5b8f538b94 (fixed)

Vendor states this is fixed in fa6482f374fda29a71ad44d76d35b4842d43cda4 (fixed)

Vendor states this is fixed in 5.10.137 (unaffected)

Vendor states this is fixed in 5.15.61 (unaffected)

Vendor states this is fixed in 5.18.18 (unaffected)

Vendor states this is fixed in 5.19.2 (unaffected)

Vendor states this is fixed in 5.7 (unaffected)

Vendor states this is fixed in 6.0 (unaffected)