{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-53149 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53149 is a medium-severity denial of service vulnerability in Linux kernel, published on 15 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-53149 and fix it if it is affected.\n\nWhat it is: CVE-2023-53149 is a medium-severity denial of service vulnerability in Linux kernel, published on 15 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-53149 in the wild and no public exploit code.\n\nAffected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-53149/ (Markdown: https://insights.sbomify.com/CVE-2023-53149/index.md)","id":"CVE-2023-53149","markdown":"https://insights.sbomify.com/CVE-2023-53149/index.md","name":"CVE-2023-53149","record":{"aliases":["AZL-70771","BELL-CVE-2023-53149","DEBIAN-CVE-2023-53149","GHSA-3gfc-6fjv-pj6m","ROOT-OS-DEBIAN-11-CVE-2023-53149","ROOT-OS-DEBIAN-12-CVE-2023-53149","ROOT-OS-UBUNTU-2204-CVE-2023-53149","UBUNTU-CVE-2023-53149"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A deadlock in the Linux kernel ext4 filesystem can cause a denial of service during page writeback operations.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-667","name":"Improper Locking"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: avoid deadlock in fs reclaim with page writeback\n\nExt4 has a filesystem wide lock protecting ext4_writepages() calls to\navoid races with switching of journalled data flag or inode format. This\nlock can however cause a deadlock like:\n\nCPU0                            CPU1\n\next4_writepages()\n  percpu_down_read(sbi-\u003es_writepages_rwsem);\n                                ext4_change_inode_journal_flag()\n                                  percpu_down_write(sbi-\u003es_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 =\u003e\n              iput_final() - inode dirty =\u003e\n                write_inode_now()...\n                  ext4_writepages() tries to acquire sbi-\u003es_writepages_rwsem\n                    and blocks forever\n\nMake sure we cannot recurse into filesystem reclaim from writeback code\nto avoid the deadlock.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"ext4: avoid deadlock in fs reclaim with page writeback","id":"CVE-2023-53149","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2023"},"n_packages":0,"n_references":3,"next":{"headline":"scsi: qla2xxx: Pointer may be dereferenced","id":"CVE-2023-53150"},"packages":[],"prev":{"headline":"igb: Fix igb_down hung on surprise removal","id":"CVE-2023-53148"},"products":["Linux"],"published":"2025-09-15","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A deadlock in the Linux kernel ext4 filesystem can cause a denial of service during page writeback operations.","url":"https://insights.sbomify.com/CVE-2023-53149/"}