{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-42077 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-42077 is a medium-severity denial of service vulnerability in Linux kernel, published on 29 Jul 2024. 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-2024-42077 and fix it if it is affected.\n\nWhat it is: CVE-2024-42077 is a medium-severity denial of service vulnerability in Linux kernel, published on 29 Jul 2024. 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-2024-42077 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-2024-42077/ (Markdown: https://insights.sbomify.com/CVE-2024-42077/index.md)","id":"CVE-2024-42077","markdown":"https://insights.sbomify.com/CVE-2024-42077/index.md","name":"CVE-2024-42077","record":{"aliases":["AZL-47175","BELL-CVE-2024-42077","DEBIAN-CVE-2024-42077","GHSA-cfqx-qcxx-3hwg","UBUNTU-CVE-2024-42077"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel OCFS2","requires_auth":"low_privilege","summary":"A local attacker can trigger a kernel panic in the OCFS2 filesystem by performing direct I/O on heavily fragmented files, causing a denial of service.","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":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix DIO failure due to insufficient transaction credits\n\nThe code in ocfs2_dio_end_io_write() estimates number of necessary\ntransaction credits using ocfs2_calc_extend_credits().  This however does\nnot take into account that the IO could be arbitrarily large and can\ncontain arbitrary number of extents.\n\nExtent tree manipulations do often extend the current transaction but not\nin all of the cases.  For example if we have only single block extents in\nthe tree, ocfs2_mark_extent_written() will end up calling\nocfs2_replace_extent_rec() all the time and we will never extend the\ncurrent transaction and eventually exhaust all the transaction credits if\nthe IO contains many single block extents.  Once that happens a\nWARN_ON(jbd2_handle_buffer_credits(handle) \u003c= 0) is triggered in\njbd2_journal_dirty_metadata() and subsequently OCFS2 aborts in response to\nthis error.  This was actually triggered by one of our customers on a\nheavily fragmented OCFS2 filesystem.\n\nTo fix the issue make sure the transaction always has enough credits for\none extent insert before each call of ocfs2_mark_extent_written().\n\nHeming Zhao said:\n\n------\nPANIC: \"Kernel panic - not syncing: OCFS2: (device dm-1): panic forced after error\"\n\nPID: xxx  TASK: xxxx  CPU: 5  COMMAND: \"SubmitThread-CA\"\n  #0 machine_kexec at ffffffff8c069932\n  #1 __crash_kexec at ffffffff8c1338fa\n  #2 panic at ffffffff8c1d69b9\n  #3 ocfs2_handle_error at ffffffffc0c86c0c [ocfs2]\n  #4 __ocfs2_abort at ffffffffc0c88387 [ocfs2]\n  #5 ocfs2_journal_dirty at ffffffffc0c51e98 [ocfs2]\n  #6 ocfs2_split_extent at ffffffffc0c27ea3 [ocfs2]\n  #7 ocfs2_change_extent_flag at ffffffffc0c28053 [ocfs2]\n  #8 ocfs2_mark_extent_written at ffffffffc0c28347 [ocfs2]\n  #9 ocfs2_dio_end_io_write at ffffffffc0c2bef9 [ocfs2]\n#10 ocfs2_dio_end_io at ffffffffc0c2c0f5 [ocfs2]\n#11 dio_complete at ffffffff8c2b9fa7\n#12 do_blockdev_direct_IO at ffffffff8c2bc09f\n#13 ocfs2_direct_IO at ffffffffc0c2b653 [ocfs2]\n#14 generic_file_direct_write at ffffffff8c1dcf14\n#15 __generic_file_write_iter at ffffffff8c1dd07b\n#16 ocfs2_file_write_iter at ffffffffc0c49f1f [ocfs2]\n#17 aio_write at ffffffff8c2cc72e\n#18 kmem_cache_alloc at ffffffff8c248dde\n#19 do_io_submit at ffffffff8c2ccada\n#20 do_syscall_64 at ffffffff8c004984\n#21 entry_SYSCALL_64_after_hwframe at ffffffff8c8000ba","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":"ocfs2: fix DIO failure due to insufficient transaction credits","id":"CVE-2024-42077","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2024"},"n_packages":0,"n_references":6,"next":{"headline":"nfsd: initialise nfsd_info.mutex early.","id":"CVE-2024-42078"},"packages":[],"prev":{"headline":"net: can: j1939: Initialize unused data in j1939_send_one()","id":"CVE-2024-42076"},"products":["Linux"],"published":"2024-07-29","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 panic in the OCFS2 filesystem by performing direct I/O on heavily fragmented files, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2024-42077/"}