{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-53537 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53537 is a high-severity use after free vulnerability in Linux kernel, published on 4 Oct 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-2023-53537 and fix it if it is affected.\n\nWhat it is: CVE-2023-53537 is a high-severity use after free vulnerability in Linux kernel, published on 4 Oct 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-2023-53537 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-2023-53537/ (Markdown: https://insights.sbomify.com/CVE-2023-53537/index.md)","id":"CVE-2023-53537","markdown":"https://insights.sbomify.com/CVE-2023-53537/index.md","name":"CVE-2023-53537","record":{"aliases":["BELL-CVE-2023-53537","DEBIAN-CVE-2023-53537","GHSA-f8rh-5cg2-mcj8","UBUNTU-CVE-2023-53537"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A use-after-free vulnerability in the Linux kernel's f2fs filesystem allows attackers to cause a system crash or potentially execute arbitrary code.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid use-after-free for cached IPU bio\n\nxfstest generic/019 reports a bug:\n\nkernel BUG at mm/filemap.c:1619!\nRIP: 0010:folio_end_writeback+0x8a/0x90\nCall Trace:\n end_page_writeback+0x1c/0x60\n f2fs_write_end_io+0x199/0x420\n bio_endio+0x104/0x180\n submit_bio_noacct+0xa5/0x510\n submit_bio+0x48/0x80\n f2fs_submit_write_bio+0x35/0x300\n f2fs_submit_merged_ipu_write+0x2a0/0x2b0\n f2fs_write_single_data_page+0x838/0x8b0\n f2fs_write_cache_pages+0x379/0xa30\n f2fs_write_data_pages+0x30c/0x340\n do_writepages+0xd8/0x1b0\n __writeback_single_inode+0x44/0x370\n writeback_sb_inodes+0x233/0x4d0\n __writeback_inodes_wb+0x56/0xf0\n wb_writeback+0x1dd/0x2d0\n wb_workfn+0x367/0x4a0\n process_one_work+0x21d/0x430\n worker_thread+0x4e/0x3c0\n kthread+0x103/0x130\n ret_from_fork+0x2c/0x50\n\nThe root cause is: after cp_error is set, f2fs_submit_merged_ipu_write()\nin f2fs_write_single_data_page() tries to flush IPU bio in cache, however\nf2fs_submit_merged_ipu_write() missed to check validity of @bio parameter,\nresult in submitting random cached bio which belong to other IO context,\nthen it will cause use-after-free issue, fix it by adding additional\nvalidity check.","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":"f2fs: fix to avoid use-after-free for cached IPU bio","id":"CVE-2023-53537","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"use_after_free","year":"2023"},"n_packages":0,"n_references":6,"next":{"headline":"btrfs: insert tree mod log move in push_node_left","id":"CVE-2023-53538"},"packages":[],"prev":{"headline":"blk-crypto: make blk_crypto_evict_key() more robust","id":"CVE-2023-53536"},"products":["Linux"],"published":"2025-10-04","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":"2026-08-05","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel's f2fs filesystem allows attackers to cause a system crash or potentially execute arbitrary code.","url":"https://insights.sbomify.com/CVE-2023-53537/"}