{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2025-37827", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-37827", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-05-08T06:26:19.320Z", "updatedAt": "2026-05-23T15:58:19.881Z", "importedAt": "2026-10-24T01:57:34.152Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "btrfs: zoned: return EIO on RAID1 block group write pointer mismatch", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: return EIO on RAID1 block group write pointer mismatch\n\nThere was a bug report about a NULL pointer dereference in\n__btrfs_add_free_space_zoned() that ultimately happens because a\nconversion from the default metadata profile DUP to a RAID1 profile on two\ndisks.\n\nThe stack trace has the following signature:\n\n BTRFS error (device sdc): zoned: write pointer offset mismatch of zones in raid1 profile\n BUG: kernel NULL pointer dereference, address: 0000000000000058\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI\n RIP: 0010:__btrfs_add_free_space_zoned.isra.0+0x61/0x1a0\n RSP: 0018:ffffa236b6f3f6d0 EFLAGS: 00010246\n RAX: 0000000000000000 RBX: ffff96c8132f3400 RCX: 0000000000000001\n RDX: 0000000010000000 RSI: 0000000000000000 RDI: ffff96c8132f3410\n RBP: 0000000010000000 R08: 0000000000000003 R09: 0000000000000000\n R10: 0000000000000000 R11: 00000000ffffffff R12: 0000000000000000\n R13: ffff96c758f65a40 R14: 0000000000000001 R15: 000011aac0000000\n FS: 00007fdab1cb2900(0000) GS:ffff96e60ca00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000000000000058 CR3: 00000001a05ae000 CR4: 0000000000350ef0\n Call Trace:\n \n ? __die_body.cold+0x19/0x27\n ? page_fault_oops+0x15c/0x2f0\n ? exc_page_fault+0x7e/0x180\n ? asm_exc_page_fault+0x26/0x30\n ? __btrfs_add_free_space_zoned.isra.0+0x61/0x1a0\n btrfs_add_free_space_async_trimmed+0x34/0x40\n btrfs_add_new_free_space+0x107/0x120\n btrfs_make_block_group+0x104/0x2b0\n btrfs_create_chunk+0x977/0xf20\n btrfs_chunk_alloc+0x174/0x510\n ? srso_return_thunk+0x5/0x5f\n btrfs_inc_block_group_ro+0x1b1/0x230\n btrfs_relocate_block_group+0x9e/0x410\n btrfs_relocate_chunk+0x3f/0x130\n btrfs_balance+0x8ac/0x12b0\n ? srso_return_thunk+0x5/0x5f\n ? srso_return_thunk+0x5/0x5f\n ? __kmalloc_cache_noprof+0x14c/0x3e0\n btrfs_ioctl+0x2686/0x2a80\n ? srso_return_thunk+0x5/0x5f\n ? ioctl_has_perm.constprop.0.isra.0+0xd2/0x120\n __x64_sys_ioctl+0x97/0xc0\n do_syscall_64+0x82/0x160\n ? srso_return_thunk+0x5/0x5f\n ? __memcg_slab_free_hook+0x11a/0x170\n ? srso_return_thunk+0x5/0x5f\n ? kmem_cache_free+0x3f0/0x450\n ? srso_return_thunk+0x5/0x5f\n ? srso_return_thunk+0x5/0x5f\n ? syscall_exit_to_user_mode+0x10/0x210\n ? srso_return_thunk+0x5/0x5f\n ? do_syscall_64+0x8e/0x160\n ? sysfs_emit+0xaf/0xc0\n ? srso_return_thunk+0x5/0x5f\n ? srso_return_thunk+0x5/0x5f\n ? seq_read_iter+0x207/0x460\n ? srso_return_thunk+0x5/0x5f\n ? vfs_read+0x29c/0x370\n ? srso_return_thunk+0x5/0x5f\n ? srso_return_thunk+0x5/0x5f\n ? syscall_exit_to_user_mode+0x10/0x210\n ? srso_return_thunk+0x5/0x5f\n ? do_syscall_64+0x8e/0x160\n ? srso_return_thunk+0x5/0x5f\n ? exc_page_fault+0x7e/0x180\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n RIP: 0033:0x7fdab1e0ca6d\n RSP: 002b:00007ffeb2b60c80 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\n RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdab1e0ca6d\n RDX: 00007ffeb2b60d80 RSI: 00000000c4009420 RDI: 0000000000000003\n RBP: 00007ffeb2b60cd0 R08: 0000000000000000 R09: 0000000000000013\n R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\n R13: 00007ffeb2b6343b R14: 00007ffeb2b60d80 R15: 0000000000000001\n \n CR2: 0000000000000058\n ---[ end trace 0000000000000000 ]---\n\nThe 1st line is the most interesting here:\n\n BTRFS error (device sdc): zoned: write pointer offset mismatch of zones in raid1 profile\n\nWhen a RAID1 block-group is created and a write pointer mismatch between\nthe disks in the RAID set is detected, btrfs sets the alloc_offset to the\nlength of the block group marking it as full. Afterwards the code expects\nthat a balance operation will evacuate the data in this block-group and\nrepair the problems.\n\nBut before this is possible, the new space of this block-group will be\naccounted in the free space cache. But in __btrfs_\n---truncated---", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "b1934cd6069538db2255dc94ba573771ecf3b560", "status": "affected", "versionType": "git", "lessThan": "9a447f748f6c7287dad68fa91913cd382fa0fcc8" }, { "version": "b1934cd6069538db2255dc94ba573771ecf3b560", "status": "affected", "versionType": "git", "lessThan": "f4717a02cc422cf4bb2dbb280b154a1ae65c5f84" }, { "version": "b1934cd6069538db2255dc94ba573771ecf3b560", "status": "affected", "versionType": "git", "lessThan": "b0c26f47992672661340dd6ea931240213016609" }, { "version": "e91dab550dd1d2221333cac9f5c012ab5193696f", "status": "affected", "versionType": "git" }, { "version": "6.10.10", "status": "affected", "versionType": "semver", "lessThan": "6.11" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.11", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.11" }, { "version": "6.12.26", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.14.5", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.14.*" }, { "version": "6.15", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }