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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade bpftoolUpgrade kernel-tools-develUpgrade kernel-develUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade perf-debuginfoUpgrade perfUpgrade kernel-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-headersUpgrade kernel-livepatch-5.15.69-37.134Upgrade kernel-toolsUpgrade kernel-livepatch-5.10.144-127.601Upgrade python-perf-debuginfoUpgrade bpftool-debuginfoUpgrade python-perfUpgrade kernel-debuginfo-common-aarch64 | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linux | Jun 20, 2025 | Jun 20, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade kernelUpgrade kernel-toolsUpgrade python3-perf | Oct 24, 2025 | Oct 23, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Jun 18, 2025 |
| Ubuntu | — | Upgrade linux-kvmUpgrade linux-gcpUpgrade linux-ibmUpgrade linux-gcp-5.15Upgrade linux-awsUpgrade linux-gkeopUpgrade linux-intel-iotg-5.15Upgrade linux-azure-5.15Upgrade linux-aws-5.15Upgrade linuxUpgrade linux-raspiUpgrade linux-lowlatencyUpgrade linux-lowlatency-hwe-5.15Upgrade linux-oracle-5.15Upgrade linux-gkeUpgrade linux-azure-fde-5.15Upgrade linux-hwe-5.15Upgrade linux-intel-iotgUpgrade linux-realtimeUpgrade linux-azure-fdeUpgrade linux-nvidiaUpgrade linux-oracleUpgrade linux-riscv-5.15Upgrade linux-azure | Jun 26, 2025 | Jun 18, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Jun 18, 2025 |
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