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Vulnerability · Published Jun 18, 2025 · Assigned by Linux

CVE-2022-50090btrfs: replace BTRFS_MAX_EXTENT_SIZE with fs_info->max_extent_size

High 7.8

In plain English

A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.2%top 89.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: btrfs: replace BTRFS_MAX_EXTENT_SIZE with fs_info->max_extent_size On zoned filesystem, data write out is limited by max_zone_append_size, and a large ordered extent is split according the size of a bio. OTOH, the number of extents to be written is calculated using BTRFS_MAX_EXTENT_SIZE, and that estimated number is used to reserve the metadata bytes to update and/or create the metadata items. The metadata reservation is done at e.g, btrfs_buffered_write() and then released according to the estimation changes. Thus, if the number of extent increases massively, the reserved metadata can run out. The increase of the number of extents easily occurs on zoned filesystem if BTRFS_MAX_EXTENT_SIZE > max_zone_append_size. And, it causes the following warning on a small RAM environment with disabling metadata over-commit (in the following patch). [75721.498492] ------------[ cut here ]------------ [75721.505624] BTRFS: block rsv 1 returned -28 [75721.512230] WARNING: CPU: 24 PID: 2327559 at fs/btrfs/block-rsv.c:537 btrfs_use_block_rsv+0x560/0x760 [btrfs] [75721.581854] CPU: 24 PID: 2327559 Comm: kworker/u64:10 Kdump: loaded Tainted: G W 5.18.0-rc2-BTRFS-ZNS+ #109 [75721.597200] Hardware name: Supermicro Super Server/H12SSL-NT, BIOS 2.0 02/22/2021 [75721.607310] Workqueue: btrfs-endio-write btrfs_work_helper [btrfs] [75721.616209] RIP: 0010:btrfs_use_block_rsv+0x560/0x760 [btrfs] [75721.646649] RSP: 0018:ffffc9000fbdf3e0 EFLAGS: 00010286 [75721.654126] RAX: 0000000000000000 RBX: 0000000000004000 RCX: 0000000000000000 [75721.663524] RDX: 0000000000000004 RSI: 0000000000000008 RDI: fffff52001f7be6e [75721.672921] RBP: ffffc9000fbdf420 R08: 0000000000000001 R09: ffff889f8d1fc6c7 [75721.682493] R10: ffffed13f1a3f8d8 R11: 0000000000000001 R12: ffff88980a3c0e28 [75721.692284] R13: ffff889b66590000 R14: ffff88980a3c0e40 R15: ffff88980a3c0e8a [75721.701878] FS: 0000000000000000(0000) GS:ffff889f8d000000(0000) knlGS:0000000000000000 [75721.712601] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [75721.720726] CR2: 000055d12e05c018 CR3: 0000800193594000 CR4: 0000000000350ee0 [75721.730499] Call Trace: [75721.735166] <TASK> [75721.739886] btrfs_alloc_tree_block+0x1e1/0x1100 [btrfs] [75721.747545] ? btrfs_alloc_logged_file_extent+0x550/0x550 [btrfs] [75721.756145] ? btrfs_get_32+0xea/0x2d0 [btrfs] [75721.762852] ? btrfs_get_32+0xea/0x2d0 [btrfs] [75721.769520] ? push_leaf_left+0x420/0x620 [btrfs] [75721.776431] ? memcpy+0x4e/0x60 [75721.781931] split_leaf+0x433/0x12d0 [btrfs] [75721.788392] ? btrfs_get_token_32+0x580/0x580 [btrfs] [75721.795636] ? push_for_double_split.isra.0+0x420/0x420 [btrfs] [75721.803759] ? leaf_space_used+0x15d/0x1a0 [btrfs] [75721.811156] btrfs_search_slot+0x1bc3/0x2790 [btrfs] [75721.818300] ? lock_downgrade+0x7c0/0x7c0 [75721.824411] ? free_extent_buffer.part.0+0x107/0x200 [btrfs] [75721.832456] ? split_leaf+0x12d0/0x12d0 [btrfs] [75721.839149] ? free_extent_buffer.part.0+0x14f/0x200 [btrfs] [75721.846945] ? free_extent_buffer+0x13/0x20 [btrfs] [75721.853960] ? btrfs_release_path+0x4b/0x190 [btrfs] [75721.861429] btrfs_csum_file_blocks+0x85c/0x1500 [btrfs] [75721.869313] ? rcu_read_lock_sched_held+0x16/0x80 [75721.876085] ? lock_release+0x552/0xf80 [75721.881957] ? btrfs_del_csums+0x8c0/0x8c0 [btrfs] [75721.888886] ? __kasan_check_write+0x14/0x20 [75721.895152] ? do_raw_read_unlock+0x44/0x80 [75721.901323] ? _raw_write_lock_irq+0x60/0x80 [75721.907983] ? btrfs_global_root+0xb9/0xe0 [btrfs] [75721.915166] ? btrfs_csum_root+0x12b/0x180 [btrfs] [75721.921918] ? btrfs_get_global_root+0x820/0x820 [btrfs] [75721.929166] ? _raw_write_unlock+0x23/0x40 [75721.935116] ? unpin_extent_cache+0x1e3/0x390 [btrfs] [75721.942041] btrfs_finish_ordered_io.isra.0+0xa0c/0x1dc0 [btrfs] [75721.949906] ? try_to_wake_up+0x30/0x14a0 [75721.955700] ? btrfs_unlink_subvol+0xda0/0xda0 [btrfs] [75721.962661] ? rcu ---truncated---

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.0.2-1DEBIAN-CVE-2022-50090
Debian:13linux6.0.2-1DEBIAN-CVE-2022-50090
Debian:14linux6.0.2-1DEBIAN-CVE-2022-50090
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2022-50090
Ubuntu:25.10linuxno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.04:LTSlinuxno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.10linuxno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2022-50090
Ubuntu:25.10linux-awsno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.04:LTSlinux-awsno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.10linux-awsno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2022-50090
Ubuntu:25.10linux-azureno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.10linux-azureno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2022-50090
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.10linux-azure-fdeno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2022-50090
Ubuntu:25.10linux-gcpno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.10linux-gcpno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-hwe-7.0no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.04:LTSlinux-oem-7.0no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2022-50090
Ubuntu:25.10linux-oracleno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.10linux-oracleno fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2022-50090
Ubuntu:25.10linux-raspino fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.10linux-raspino fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-50090
Ubuntu:25.10linux-realtimeno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.10linux-realtimeno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-50090
Ubuntu:25.10linux-riscvno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-50090
Ubuntu:26.10linux-riscvno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-riscv-7.0no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2022-50090
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2022-50090
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2022-50090

Affected products (as reported)

VendorProductVersions
Linux Linux d8e3fb106f393858b90b3befc4f6092a76c86d1c – before 1aa262c1d056551dd1246115af8b7e351184deaed8e3fb106f393858b90b3befc4f6092a76c86d1c – before 6cb4b96df97082a54634ba02196516919cda228cd8e3fb106f393858b90b3befc4f6092a76c86d1c – before 096e8eb9639b342bc35f9b741cf05e26d0106e92d8e3fb106f393858b90b3befc4f6092a76c86d1c – before f7b12a62f008a3041f42f2426983e59a6a0a3c59
Linux Linux 5.12

References