{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-53270 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53270 is a medium-severity denial of service vulnerability in Linux kernel, published on 16 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-2023-53270 and fix it if it is affected.\n\nWhat it is: CVE-2023-53270 is a medium-severity denial of service vulnerability in Linux kernel, published on 16 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-2023-53270 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-2023-53270/ (Markdown: https://insights.sbomify.com/CVE-2023-53270/index.md)","id":"CVE-2023-53270","markdown":"https://insights.sbomify.com/CVE-2023-53270/index.md","name":"CVE-2023-53270","record":{"aliases":["BELL-CVE-2023-53270","DEBIAN-CVE-2023-53270","GHSA-m2rj-qwwv-825v","ROOT-OS-DEBIAN-11-CVE-2023-53270","UBUNTU-CVE-2023-53270"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel ext4","requires_auth":"low_privilege","summary":"A local attacker can trigger a kernel warning and potential crash in the ext4 filesystem by exploiting a race condition during partial writes.","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":"cisa-adp","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix i_disksize exceeding i_size problem in paritally written case\n\nIt is possible for i_disksize can exceed i_size, triggering a warning.\n\ngeneric_perform_write\n copied = iov_iter_copy_from_user_atomic(len) // copied \u003c len\n ext4_da_write_end\n | ext4_update_i_disksize\n |  new_i_size = pos + copied;\n |  WRITE_ONCE(EXT4_I(inode)-\u003ei_disksize, newsize) // update i_disksize\n | generic_write_end\n |  copied = block_write_end(copied, len) // copied = 0\n |   if (unlikely(copied \u003c len))\n |    if (!PageUptodate(page))\n |     copied = 0;\n |  if (pos + copied \u003e inode-\u003ei_size) // return false\n if (unlikely(copied == 0))\n  goto again;\n if (unlikely(iov_iter_fault_in_readable(i, bytes))) {\n  status = -EFAULT;\n  break;\n }\n\nWe get i_disksize greater than i_size here, which could trigger WARNING\ncheck 'i_size_read(inode) \u003c EXT4_I(inode)-\u003ei_disksize' while doing dio:\n\next4_dio_write_iter\n iomap_dio_rw\n  __iomap_dio_rw // return err, length is not aligned to 512\n ext4_handle_inode_extension\n  WARN_ON_ONCE(i_size_read(inode) \u003c EXT4_I(inode)-\u003ei_disksize) // Oops\n\n WARNING: CPU: 2 PID: 2609 at fs/ext4/file.c:319\n CPU: 2 PID: 2609 Comm: aa Not tainted 6.3.0-rc2\n RIP: 0010:ext4_file_write_iter+0xbc7\n Call Trace:\n  vfs_write+0x3b1\n  ksys_write+0x77\n  do_syscall_64+0x39\n\nFix it by updating 'copied' value before updating i_disksize just like\next4_write_inline_data_end() does.\n\nA reproducer can be found in the buganizer link below.","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: fix i_disksize exceeding i_size problem in paritally written case","id":"CVE-2023-53270","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":5,"next":{"headline":"ubi: Fix unreferenced object reported by kmemleak in ubi_resize_volume()","id":"CVE-2023-53271"},"packages":[],"prev":{"headline":"block: ublk: make sure that block size is set correctly","id":"CVE-2023-53269"},"products":["Linux"],"published":"2025-09-16","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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A local attacker can trigger a kernel warning and potential crash in the ext4 filesystem by exploiting a race condition during partial writes.","url":"https://insights.sbomify.com/CVE-2023-53270/"}