{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-54253", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-30T12:06:44.515Z", "datePublished": "2025-12-30T12:15:49.460Z", "dateUpdated": "2026-05-11T19:58:25.144Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:58:25.144Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: set page extent mapped after read_folio in relocate_one_page\n\nOne of the CI runs triggered the following panic\n\n assertion failed: PagePrivate(page) && page->private, in fs/btrfs/subpage.c:229\n ------------[ cut here ]------------\n kernel BUG at fs/btrfs/subpage.c:229!\n Internal error: Oops - BUG: 00000000f2000800 [#1] SMP\n CPU: 0 PID: 923660 Comm: btrfs Not tainted 6.5.0-rc3+ #1\n pstate: 61400005 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\n pc : btrfs_subpage_assert+0xbc/0xf0\n lr : btrfs_subpage_assert+0xbc/0xf0\n sp : ffff800093213720\n x29: ffff800093213720 x28: ffff8000932138b4 x27: 000000000c280000\n x26: 00000001b5d00000 x25: 000000000c281000 x24: 000000000c281fff\n x23: 0000000000001000 x22: 0000000000000000 x21: ffffff42b95bf880\n x20: ffff42b9528e0000 x19: 0000000000001000 x18: ffffffffffffffff\n x17: 667274622f736620 x16: 6e69202c65746176 x15: 0000000000000028\n x14: 0000000000000003 x13: 00000000002672d7 x12: 0000000000000000\n x11: ffffcd3f0ccd9204 x10: ffffcd3f0554ae50 x9 : ffffcd3f0379528c\n x8 : ffff800093213428 x7 : 0000000000000000 x6 : ffffcd3f091771e8\n x5 : ffff42b97f333948 x4 : 0000000000000000 x3 : 0000000000000000\n x2 : 0000000000000000 x1 : ffff42b9556cde80 x0 : 000000000000004f\n Call trace:\n btrfs_subpage_assert+0xbc/0xf0\n btrfs_subpage_set_dirty+0x38/0xa0\n btrfs_page_set_dirty+0x58/0x88\n relocate_one_page+0x204/0x5f0\n relocate_file_extent_cluster+0x11c/0x180\n relocate_data_extent+0xd0/0xf8\n relocate_block_group+0x3d0/0x4e8\n btrfs_relocate_block_group+0x2d8/0x490\n btrfs_relocate_chunk+0x54/0x1a8\n btrfs_balance+0x7f4/0x1150\n btrfs_ioctl+0x10f0/0x20b8\n __arm64_sys_ioctl+0x120/0x11d8\n invoke_syscall.constprop.0+0x80/0xd8\n do_el0_svc+0x6c/0x158\n el0_svc+0x50/0x1b0\n el0t_64_sync_handler+0x120/0x130\n el0t_64_sync+0x194/0x198\n Code: 91098021 b0007fa0 91346000 97e9c6d2 (d4210000)\n\nThis is the same problem outlined in 17b17fcd6d44 (\"btrfs:\nset_page_extent_mapped after read_folio in btrfs_cont_expand\") , and the\nfix is the same. I originally looked for the same pattern elsewhere in\nour code, but mistakenly skipped over this code because I saw the page\ncache readahead before we set_page_extent_mapped, not realizing that\nthis was only in the !page case, that we can still end up with a\n!uptodate page and then do the btrfs_read_folio further down.\n\nThe fix here is the same as the above mentioned patch, move the\nset_page_extent_mapped call to after the btrfs_read_folio() block to\nmake sure that we have the subpage blocksize stuff setup properly before\nusing the page." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/btrfs/relocation.c" ], "versions": [ { "version": "32443de3382be98c0a8b8f6f50d23da2e10c4117", "lessThan": "08daa38ca212d87f77beae839bc9be71079c7abf", "status": "affected", "versionType": "git" }, { "version": "32443de3382be98c0a8b8f6f50d23da2e10c4117", "lessThan": "9d1e020ed9649cf140fcfafd052cfdcce9e9d67d", "status": "affected", "versionType": "git" }, { "version": "32443de3382be98c0a8b8f6f50d23da2e10c4117", "lessThan": "e7f1326cc24e22b38afc3acd328480a1183f9e79", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/btrfs/relocation.c" ], "versions": [ { "version": "5.12", "status": "affected" }, { "version": "0", "lessThan": "5.12", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.54", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5.4", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.1.54" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.5.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.6" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/08daa38ca212d87f77beae839bc9be71079c7abf" }, { "url": "https://git.kernel.org/stable/c/9d1e020ed9649cf140fcfafd052cfdcce9e9d67d" }, { "url": "https://git.kernel.org/stable/c/e7f1326cc24e22b38afc3acd328480a1183f9e79" } ], "title": "btrfs: set page extent mapped after read_folio in relocate_one_page", "x_generator": { "engine": "bippy-1.2.0" } } } }