{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-15T17:17:12.846758200Z","vulnerabilities":[{"cve":{"id":"CVE-2023-53317","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2025-09-16T17:15:37.713","lastModified":"2026-01-14T19:16:25.223","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix WARNING in mb_find_extent\n\nSyzbot found the following issue:\n\nEXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support!\nEXT4-fs (loop0): orphan cleanup on readonly fs\n------------[ cut here ]------------\nWARNING: CPU: 1 PID: 5067 at fs/ext4/mballoc.c:1869 mb_find_extent+0x8a1/0xe30\nModules linked in:\nCPU: 1 PID: 5067 Comm: syz-executor307 Not tainted 6.2.0-rc1-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022\nRIP: 0010:mb_find_extent+0x8a1/0xe30 fs/ext4/mballoc.c:1869\nRSP: 0018:ffffc90003c9e098 EFLAGS: 00010293\nRAX: ffffffff82405731 RBX: 0000000000000041 RCX: ffff8880783457c0\nRDX: 0000000000000000 RSI: 0000000000000041 RDI: 0000000000000040\nRBP: 0000000000000040 R08: ffffffff82405723 R09: ffffed10053c9402\nR10: ffffed10053c9402 R11: 1ffff110053c9401 R12: 0000000000000000\nR13: ffffc90003c9e538 R14: dffffc0000000000 R15: ffffc90003c9e2cc\nFS:  0000555556665300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 000056312f6796f8 CR3: 0000000022437000 CR4: 00000000003506e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n <TASK>\n ext4_mb_complex_scan_group+0x353/0x1100 fs/ext4/mballoc.c:2307\n ext4_mb_regular_allocator+0x1533/0x3860 fs/ext4/mballoc.c:2735\n ext4_mb_new_blocks+0xddf/0x3db0 fs/ext4/mballoc.c:5605\n ext4_ext_map_blocks+0x1868/0x6880 fs/ext4/extents.c:4286\n ext4_map_blocks+0xa49/0x1cc0 fs/ext4/inode.c:651\n ext4_getblk+0x1b9/0x770 fs/ext4/inode.c:864\n ext4_bread+0x2a/0x170 fs/ext4/inode.c:920\n ext4_quota_write+0x225/0x570 fs/ext4/super.c:7105\n write_blk fs/quota/quota_tree.c:64 [inline]\n get_free_dqblk+0x34a/0x6d0 fs/quota/quota_tree.c:130\n do_insert_tree+0x26b/0x1aa0 fs/quota/quota_tree.c:340\n do_insert_tree+0x722/0x1aa0 fs/quota/quota_tree.c:375\n do_insert_tree+0x722/0x1aa0 fs/quota/quota_tree.c:375\n do_insert_tree+0x722/0x1aa0 fs/quota/quota_tree.c:375\n dq_insert_tree fs/quota/quota_tree.c:401 [inline]\n qtree_write_dquot+0x3b6/0x530 fs/quota/quota_tree.c:420\n v2_write_dquot+0x11b/0x190 fs/quota/quota_v2.c:358\n dquot_acquire+0x348/0x670 fs/quota/dquot.c:444\n ext4_acquire_dquot+0x2dc/0x400 fs/ext4/super.c:6740\n dqget+0x999/0xdc0 fs/quota/dquot.c:914\n __dquot_initialize+0x3d0/0xcf0 fs/quota/dquot.c:1492\n ext4_process_orphan+0x57/0x2d0 fs/ext4/orphan.c:329\n ext4_orphan_cleanup+0xb60/0x1340 fs/ext4/orphan.c:474\n __ext4_fill_super fs/ext4/super.c:5516 [inline]\n ext4_fill_super+0x81cd/0x8700 fs/ext4/super.c:5644\n get_tree_bdev+0x400/0x620 fs/super.c:1282\n vfs_get_tree+0x88/0x270 fs/super.c:1489\n do_new_mount+0x289/0xad0 fs/namespace.c:3145\n do_mount fs/namespace.c:3488 [inline]\n __do_sys_mount fs/namespace.c:3697 [inline]\n __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nAdd some debug information:\nmb_find_extent: mb_find_extent block=41, order=0 needed=64 next=0 ex=0/41/1@3735929054 64 64 7\nblock_bitmap: ff 3f 0c 00 fc 01 00 00 d2 3d 00 00 00 00 00 00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\n\nAcctually, blocks per group is 64, but block bitmap indicate at least has\n128 blocks. Now, ext4_validate_block_bitmap() didn't check invalid block's\nbitmap if set.\nTo resolve above issue, add check like fsck \"Padding at end of block bitmap is\nnot set\"."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-noinfo"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"4.19.283","matchCriteriaId":"4CD72EDE-728E-485C-B222-F269B229C33E"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.243","matchCriteriaId":"E54ACEF5-C8C1-4266-85FC-7D513FFD1DEC"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.180","matchCriteriaId":"78422AC3-CC89-479E-B4BC-62381D8F3564"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.112","matchCriteriaId":"8612AB29-948C-4D53-84D9-6CA2E4A8B015"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.29","matchCriteriaId":"D48F00B5-5471-4D1B-BE47-1DAB8122F35A"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.2.16","matchCriteriaId":"F92F7C8E-A977-4255-B1B6-D1908D8B408F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"6.3.3","matchCriteriaId":"6D96A7FC-D812-4458-AEA8-3FF4023E6B75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:*","matchCriteriaId":"38BC6744-7D25-4C02-9966-B224CD071D30"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/1b90fbc7590124c57a2e590de7fd07eba26606f1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/5d356d902e9d5b1aaaaf2326d365340fa8a90c1b","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/775b00ba23f6f916fe2ac60c5ff7fd0fe4f28d0d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/d55e76e11592a1d18a179c7fd34ca1b52632beb3","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/dba62fa84a8eac44a53a2862de8a40e5bdfa0ae3","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/dd45e536f47a82e0a405f9a4b6c7ceb367171ee9","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/e4d503c956a744cb59e509ca5f134cfad423c7a3","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/fa08a7b61dff8a4df11ff1e84abfc214b487caf7","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]}]}}]}