{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49880", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-05-01T14:05:17.239Z", "datePublished": "2025-05-01T14:10:27.947Z", "dateUpdated": "2026-05-11T19:08:31.908Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:08:31.908Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix warning in 'ext4_da_release_space'\n\nSyzkaller report issue as follows:\nEXT4-fs (loop0): Free/Dirty block details\nEXT4-fs (loop0): free_blocks=0\nEXT4-fs (loop0): dirty_blocks=0\nEXT4-fs (loop0): Block reservation details\nEXT4-fs (loop0): i_reserved_data_blocks=0\nEXT4-fs warning (device loop0): ext4_da_release_space:1527: ext4_da_release_space: ino 18, to_free 1 with only 0 reserved data blocks\n------------[ cut here ]------------\nWARNING: CPU: 0 PID: 92 at fs/ext4/inode.c:1528 ext4_da_release_space+0x25e/0x370 fs/ext4/inode.c:1524\nModules linked in:\nCPU: 0 PID: 92 Comm: kworker/u4:4 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\nWorkqueue: writeback wb_workfn (flush-7:0)\nRIP: 0010:ext4_da_release_space+0x25e/0x370 fs/ext4/inode.c:1528\nRSP: 0018:ffffc900015f6c90 EFLAGS: 00010296\nRAX: 42215896cd52ea00 RBX: 0000000000000000 RCX: 42215896cd52ea00\nRDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000\nRBP: 1ffff1100e907d96 R08: ffffffff816aa79d R09: fffff520002bece5\nR10: fffff520002bece5 R11: 1ffff920002bece4 R12: ffff888021fd2000\nR13: ffff88807483ecb0 R14: 0000000000000001 R15: ffff88807483e740\nFS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005555569ba628 CR3: 000000000c88e000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \n ext4_es_remove_extent+0x1ab/0x260 fs/ext4/extents_status.c:1461\n mpage_release_unused_pages+0x24d/0xef0 fs/ext4/inode.c:1589\n ext4_writepages+0x12eb/0x3be0 fs/ext4/inode.c:2852\n do_writepages+0x3c3/0x680 mm/page-writeback.c:2469\n __writeback_single_inode+0xd1/0x670 fs/fs-writeback.c:1587\n writeback_sb_inodes+0xb3b/0x18f0 fs/fs-writeback.c:1870\n wb_writeback+0x41f/0x7b0 fs/fs-writeback.c:2044\n wb_do_writeback fs/fs-writeback.c:2187 [inline]\n wb_workfn+0x3cb/0xef0 fs/fs-writeback.c:2227\n process_one_work+0x877/0xdb0 kernel/workqueue.c:2289\n worker_thread+0xb14/0x1330 kernel/workqueue.c:2436\n kthread+0x266/0x300 kernel/kthread.c:376\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306\n \n\nAbove issue may happens as follows:\next4_da_write_begin\n ext4_create_inline_data\n ext4_clear_inode_flag(inode, EXT4_INODE_EXTENTS);\n ext4_set_inode_flag(inode, EXT4_INODE_INLINE_DATA);\n__ext4_ioctl\n ext4_ext_migrate -> will lead to eh->eh_entries not zero, and set extent flag\next4_da_write_begin\n ext4_da_convert_inline_data_to_extent\n ext4_da_write_inline_data_begin\n ext4_da_map_blocks\n ext4_insert_delayed_block\n\t if (!ext4_es_scan_clu(inode, &ext4_es_is_delonly, lblk))\n\t if (!ext4_es_scan_clu(inode, &ext4_es_is_mapped, lblk))\n\t ext4_clu_mapped(inode, EXT4_B2C(sbi, lblk)); -> will return 1\n\t allocated = true;\n ext4_es_insert_delayed_block(inode, lblk, allocated);\next4_writepages\n mpage_map_and_submit_extent(handle, &mpd, &give_up_on_write); -> return -ENOSPC\n mpage_release_unused_pages(&mpd, give_up_on_write); -> give_up_on_write == 1\n ext4_es_remove_extent\n ext4_da_release_space(inode, reserved);\n if (unlikely(to_free > ei->i_reserved_data_blocks))\n\t -> to_free == 1 but ei->i_reserved_data_blocks == 0\n\t -> then trigger warning as above\n\nTo solve above issue, forbid inode do migrate which has inline data." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ext4/migrate.c" ], "versions": [ { "version": "67cf5b09a46f72e048501b84996f2f77bc42e947", "lessThan": "0de5ee103747fd3a24f1c010c79caabe35e8f0bb", "status": "affected", "versionType": "git" }, { "version": "67cf5b09a46f72e048501b84996f2f77bc42e947", "lessThan": "c3bf1e95cfa7d950dc3c064d0c2e3d06b427bc63", "status": "affected", "versionType": "git" }, { "version": "67cf5b09a46f72e048501b84996f2f77bc42e947", "lessThan": "890d738f569fa9412b70ba09f15407f17a52da20", "status": "affected", "versionType": "git" }, { "version": "67cf5b09a46f72e048501b84996f2f77bc42e947", "lessThan": "72743d5598b9096950bbfd6a9b7f173d156eea97", "status": "affected", "versionType": "git" }, { "version": "67cf5b09a46f72e048501b84996f2f77bc42e947", "lessThan": "5370b965b7a945bb8f48b9ee23d83a76a947902e", "status": "affected", "versionType": "git" }, { "version": "67cf5b09a46f72e048501b84996f2f77bc42e947", "lessThan": "0a43c015e98121c91a76154edf42280ce1a8a883", "status": "affected", "versionType": "git" }, { "version": "67cf5b09a46f72e048501b84996f2f77bc42e947", "lessThan": "89bee03d2fb8c54119b38ac6c24e7d60fae036b6", "status": "affected", "versionType": "git" }, { "version": "67cf5b09a46f72e048501b84996f2f77bc42e947", "lessThan": "1b8f787ef547230a3249bcf897221ef0cc78481b", "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/ext4/migrate.c" ], "versions": [ { "version": "3.8", "status": "affected" }, { "version": "0", "lessThan": "3.8", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.333", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.299", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.265", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.224", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.154", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.78", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.8", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1", "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": "3.8", "versionEndExcluding": "4.9.333" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "4.14.299" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "4.19.265" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "5.4.224" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "5.10.154" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "5.15.78" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.0.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/0de5ee103747fd3a24f1c010c79caabe35e8f0bb" }, { "url": "https://git.kernel.org/stable/c/c3bf1e95cfa7d950dc3c064d0c2e3d06b427bc63" }, { "url": "https://git.kernel.org/stable/c/890d738f569fa9412b70ba09f15407f17a52da20" }, { "url": "https://git.kernel.org/stable/c/72743d5598b9096950bbfd6a9b7f173d156eea97" }, { "url": "https://git.kernel.org/stable/c/5370b965b7a945bb8f48b9ee23d83a76a947902e" }, { "url": "https://git.kernel.org/stable/c/0a43c015e98121c91a76154edf42280ce1a8a883" }, { "url": "https://git.kernel.org/stable/c/89bee03d2fb8c54119b38ac6c24e7d60fae036b6" }, { "url": "https://git.kernel.org/stable/c/1b8f787ef547230a3249bcf897221ef0cc78481b" } ], "title": "ext4: fix warning in 'ext4_da_release_space'", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "lang": "en", "description": "CWE-noinfo Not enough information" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2025-10-01T16:11:11.330119Z", "id": "CVE-2022-49880", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T16:11:13.897Z" } } ] } }