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CVE-2025-37827— btrfs: zoned: return EIO on RAID1 block group write pointer mismatch

EPSS 0.05% · P15
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I. Basic Information for CVE-2025-37827

Vulnerability Information
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Vulnerability Title
btrfs: zoned: return EIO on RAID1 block group write pointer mismatch
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: return EIO on RAID1 block group write pointer mismatch There was a bug report about a NULL pointer dereference in __btrfs_add_free_space_zoned() that ultimately happens because a conversion from the default metadata profile DUP to a RAID1 profile on two disks. The stack trace has the following signature: BTRFS error (device sdc): zoned: write pointer offset mismatch of zones in raid1 profile BUG: kernel NULL pointer dereference, address: 0000000000000058 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI RIP: 0010:__btrfs_add_free_space_zoned.isra.0+0x61/0x1a0 RSP: 0018:ffffa236b6f3f6d0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff96c8132f3400 RCX: 0000000000000001 RDX: 0000000010000000 RSI: 0000000000000000 RDI: ffff96c8132f3410 RBP: 0000000010000000 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000000 R11: 00000000ffffffff R12: 0000000000000000 R13: ffff96c758f65a40 R14: 0000000000000001 R15: 000011aac0000000 FS: 00007fdab1cb2900(0000) GS:ffff96e60ca00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000058 CR3: 00000001a05ae000 CR4: 0000000000350ef0 Call Trace: <TASK> ? __die_body.cold+0x19/0x27 ? page_fault_oops+0x15c/0x2f0 ? exc_page_fault+0x7e/0x180 ? asm_exc_page_fault+0x26/0x30 ? __btrfs_add_free_space_zoned.isra.0+0x61/0x1a0 btrfs_add_free_space_async_trimmed+0x34/0x40 btrfs_add_new_free_space+0x107/0x120 btrfs_make_block_group+0x104/0x2b0 btrfs_create_chunk+0x977/0xf20 btrfs_chunk_alloc+0x174/0x510 ? srso_return_thunk+0x5/0x5f btrfs_inc_block_group_ro+0x1b1/0x230 btrfs_relocate_block_group+0x9e/0x410 btrfs_relocate_chunk+0x3f/0x130 btrfs_balance+0x8ac/0x12b0 ? srso_return_thunk+0x5/0x5f ? srso_return_thunk+0x5/0x5f ? __kmalloc_cache_noprof+0x14c/0x3e0 btrfs_ioctl+0x2686/0x2a80 ? srso_return_thunk+0x5/0x5f ? ioctl_has_perm.constprop.0.isra.0+0xd2/0x120 __x64_sys_ioctl+0x97/0xc0 do_syscall_64+0x82/0x160 ? srso_return_thunk+0x5/0x5f ? __memcg_slab_free_hook+0x11a/0x170 ? srso_return_thunk+0x5/0x5f ? kmem_cache_free+0x3f0/0x450 ? srso_return_thunk+0x5/0x5f ? srso_return_thunk+0x5/0x5f ? syscall_exit_to_user_mode+0x10/0x210 ? srso_return_thunk+0x5/0x5f ? do_syscall_64+0x8e/0x160 ? sysfs_emit+0xaf/0xc0 ? srso_return_thunk+0x5/0x5f ? srso_return_thunk+0x5/0x5f ? seq_read_iter+0x207/0x460 ? srso_return_thunk+0x5/0x5f ? vfs_read+0x29c/0x370 ? srso_return_thunk+0x5/0x5f ? srso_return_thunk+0x5/0x5f ? syscall_exit_to_user_mode+0x10/0x210 ? srso_return_thunk+0x5/0x5f ? do_syscall_64+0x8e/0x160 ? srso_return_thunk+0x5/0x5f ? exc_page_fault+0x7e/0x180 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7fdab1e0ca6d RSP: 002b:00007ffeb2b60c80 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdab1e0ca6d RDX: 00007ffeb2b60d80 RSI: 00000000c4009420 RDI: 0000000000000003 RBP: 00007ffeb2b60cd0 R08: 0000000000000000 R09: 0000000000000013 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeb2b6343b R14: 00007ffeb2b60d80 R15: 0000000000000001 </TASK> CR2: 0000000000000058 ---[ end trace 0000000000000000 ]--- The 1st line is the most interesting here: BTRFS error (device sdc): zoned: write pointer offset mismatch of zones in raid1 profile When a RAID1 block-group is created and a write pointer mismatch between the disks in the RAID set is detected, btrfs sets the alloc_offset to the length of the block group marking it as full. Afterwards the code expects that a balance operation will evacuate the data in this block-group and repair the problems. But before this is possible, the new space of this block-group will be accounted in the free space cache. But in __btrfs_ ---truncated---
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于RAID1配置错误，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux b1934cd6069538db2255dc94ba573771ecf3b560 ~ 9a447f748f6c7287dad68fa91913cd382fa0fcc8 -
LinuxLinux 6.11 -

II. Public POCs for CVE-2025-37827

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III. Intelligence Information for CVE-2025-37827

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Same Patch Batch · Linux · 2025-05-08 · 33 CVEs total

CVE-2025-37818LoongArch: Return NULL from huge_pte_offset() for invalid PMD
CVE-2025-37833net/niu: Niu requires MSIX ENTRY_DATA fields touch before entry reads
CVE-2025-37834mm/vmscan: don't try to reclaim hwpoison folio
CVE-2025-37831cpufreq: apple-soc: Fix null-ptr-deref in apple_soc_cpufreq_get_rate()
CVE-2025-37830cpufreq: scmi: Fix null-ptr-deref in scmi_cpufreq_get_rate()
CVE-2025-37829cpufreq: scpi: Fix null-ptr-deref in scpi_cpufreq_get_rate()
CVE-2025-37828scsi: ufs: mcq: Add NULL check in ufshcd_mcq_abort()
CVE-2025-37826scsi: ufs: core: Add NULL check in ufshcd_mcq_compl_pending_transfer()
CVE-2025-37825nvmet: fix out-of-bounds access in nvmet_enable_port
CVE-2025-37823net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too
CVE-2025-37824tipc: fix NULL pointer dereference in tipc_mon_reinit_self()
CVE-2025-37821sched/eevdf: Fix se->slice being set to U64_MAX and resulting crash
CVE-2025-37822riscv: uprobes: Add missing fence.i after building the XOL buffer
CVE-2025-37820xen-netfront: handle NULL returned by xdp_convert_buff_to_frame()
CVE-2025-37819irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode()
CVE-2025-37817mcb: fix a double free bug in chameleon_parse_gdd()
CVE-2025-37800driver core: fix potential NULL pointer dereference in dev_uevent()
CVE-2025-37816mei: vsc: Fix fortify-panic caused by invalid counted_by() use
CVE-2025-37815misc: microchip: pci1xxxx: Fix Kernel panic during IRQ handler registration
CVE-2025-37814tty: Require CAP_SYS_ADMIN for all usages of TIOCL_SELMOUSEREPORT

Showing top 20 of 33 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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