{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-31912 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-31912 is a medium-severity memory corruption vulnerability in The Tcpdump Group libpcap, published on 5 Sep 2026. 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-2026-31912 and fix it if it is affected.\n\nWhat it is: CVE-2026-31912 is a medium-severity memory corruption vulnerability in The Tcpdump Group libpcap, published on 5 Sep 2026. 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-2026-31912 in the wild and no public exploit code.\n\nAffected product: The Tcpdump Group libpcap. 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-2026-31912/ (Markdown: https://insights.sbomify.com/CVE-2026-31912/index.md)","id":"CVE-2026-31912","markdown":"https://insights.sbomify.com/CVE-2026-31912/index.md","name":"CVE-2026-31912","record":{"aliases":["ALPINE-CVE-2026-31912","AZL-99741","AZL-99921","BELL-CVE-2026-31912","DEBIAN-CVE-2026-31912","ECHO-c577-82f0-747c","GHSA-5r9v-8527-q4jv","UBUNTU-CVE-2026-31912"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Packet capture library","requires_auth":"low_privilege","summary":"A crafted BPF filter program in libpcap can cause out-of-bounds memory reads, potentially leading to information disclosure or denial of service.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Tcpdump","cpe":[],"cvss":{"score":5.5,"severity":"medium","source":"cna","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-823","name":"Use of Out-of-range Pointer Offset"},{"id":"CWE-1285","name":"Improper Validation of Specified Index, Position, or Offset in Input"},{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"libpcap BPF interpreter detects neither reaching the end of the filter program buffer due to lack of a return instruction nor executing a jump instruction with an offset that translates to a pointer outside of the buffer.  In particular uncommon use cases a crafted filter program can cause the interpreter to try reading the OS process memory in the 32GiB around the buffer on 64-bit architectures and in the entire address space on 32-bit architectures.","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":"OOBR in libpcap before 1.10.7","id":"CVE-2026-31912","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"WordPress Scape theme \u003c 1.5.16 - Arbitrary File Deletion vulnerability","id":"CVE-2026-31913"},"packages":[],"prev":{"headline":"abort() in libpcap before 1.10.7 on an invalid BPF opcode","id":"CVE-2026-31911"},"products":["libpcap"],"published":"2026-09-05","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-08","vendors":["The Tcpdump Group"]},"summary":"A crafted BPF filter program in libpcap can cause out-of-bounds memory reads, potentially leading to information disclosure or denial of service.","url":"https://insights.sbomify.com/CVE-2026-31912/"}