{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2025-39742 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-39742 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 11 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-2025-39742 and fix it if it is affected.\n\nWhat it is: CVE-2025-39742 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 11 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-2025-39742 in the wild and no public exploit code.\n\nAffected product: Debian Debian Linux. 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-2025-39742/ (Markdown: https://insights.sbomify.com/CVE-2025-39742/index.md)","id":"CVE-2025-39742","markdown":"https://insights.sbomify.com/CVE-2025-39742/index.md","name":"CVE-2025-39742","record":{"aliases":["BELL-CVE-2025-39742","DEBIAN-CVE-2025-39742","GHSA-3xq3-w9mf-92jr","ROOT-OS-DEBIAN-11-CVE-2025-39742","ROOT-OS-DEBIAN-12-CVE-2025-39742","ROOT-OS-UBUNTU-2204-CVE-2025-39742","ROOT-OS-UBUNTU-2404-CVE-2025-39742","SUSE-SU-2026:0533-1","SUSE-SU-2026:0544-1","UBUNTU-CVE-2025-39742"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel RDMA driver","requires_auth":"low_privilege","summary":"A divide-by-zero error in the Linux kernel's hfi1 RDMA driver can cause a system crash, requiring a kernel patch to prevent denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"debian_linux","vendor":"debian"},{"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-369","name":"Divide By Zero"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask()\n\nThe function divides number of online CPUs by num_core_siblings, and\nlater checks the divider by zero. This implies a possibility to get\nand divide-by-zero runtime error. Fix it by moving the check prior to\ndivision. This also helps to save one indentation level.","ecosystems":["SUSE:Linux Enterprise Live Patching 15 SP4","SUSE:Linux Enterprise Live Patching 15 SP5"],"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":"RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask()","id":"CVE-2025-39742","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux","linux:linux_kernel"],"type":"denial_of_service","year":"2025"},"n_packages":2,"n_references":9,"next":{"headline":"jfs: truncate good inode pages when hard link is 0","id":"CVE-2025-39743"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Live Patching 15 SP4","fixed":["5-150400.2.1"],"introduced":["0"],"last_affected":[],"package":"kernel-livepatch-SLE15-SP4_Update_45","purl":"pkg:rpm/suse/kernel-livepatch-SLE15-SP4_Update_45\u0026distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP4","source":"SUSE-SU-2026:0533-1"},{"ecosystem":"SUSE:Linux Enterprise Live Patching 15 SP5","fixed":["4-150500.2.1"],"introduced":["0"],"last_affected":[],"package":"kernel-livepatch-SLE15-SP5_Update_31","purl":"pkg:rpm/suse/kernel-livepatch-SLE15-SP5_Update_31\u0026distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5","source":"SUSE-SU-2026:0544-1"}],"prev":{"headline":"drm/xe/migrate: don't overflow max copy size","id":"CVE-2025-39741"},"products":["Linux"],"published":"2025-09-11","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"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":"2026-05-12","vendors":["Linux"]},"summary":"A divide-by-zero error in the Linux kernel's hfi1 RDMA driver can cause a system crash, requiring a kernel patch to prevent denial of service.","url":"https://insights.sbomify.com/CVE-2025-39742/"}