CVE-2023-53149

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This\nlock can however cause a deadlock like:\n\nCPU0 CPU1\n\next4_writepages()\n percpu_down_read(sbi->s_writepages_rwsem);\n ext4_change_inode_journal_flag()\n percpu_down_write(sbi->s_writepages_rwsem);\n - blocks, all readers block from now on\n ext4_do_writepages()\n ext4_init_io_end()\n kmem_cache_zalloc(io_end_cachep, GFP_KERNEL)\n fs_reclaim frees dentry...\n dentry_unlink_inode()\n iput() - last ref =>\n iput_final() - inode dirty =>\n write_inode_now()...\n ext4_writepages() tries to acquire sbi->s_writepages_rwsem\n and blocks forever\n\nMake sure we cannot recurse into filesystem reclaim from writeback code\nto avoid the deadlock."}], "id": "CVE-2023-53149", "lastModified": "2026-11-05T21:17:17.017", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-53149", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T20:19:11.717190Z", "version": "2.0.3"}}]}, "published": "2025-09-15T14:15:37.393", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/00d873c17e29cc32d90ca852b82685f1673acaa5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2ec97dc90df40c50e509809dc9a198638a7e18b6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/385b49a1f34b26f62e3834c773560b120825b6f8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4b4340bf04ce9a52061f15000ecedd126abc093c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ext4: avoid deadlock in fs reclaim with page writeback", "id": "2395246", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2395246"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2023-53149", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-09-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53149\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53149\nhttps://lore.kernel.org/linux-cve-announce/2025091552-CVE-2023-53149-2f0a@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-09-17T10:08:37.494623+00:00", "updated": "2025-09-17T10:08:37.494673+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}