{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2025-39718 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-39718 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 5 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-2025-39718 and fix it if it is affected.\n\nWhat it is: CVE-2025-39718 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 5 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-2025-39718 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-2025-39718/ (Markdown: https://insights.sbomify.com/CVE-2025-39718/index.md)","id":"CVE-2025-39718","markdown":"https://insights.sbomify.com/CVE-2025-39718/index.md","name":"CVE-2025-39718","record":{"aliases":["ALSA-2025:21397","ALSA-2025:21398","AZL-66947","BELL-CVE-2025-39718","DEBIAN-CVE-2025-39718","GHSA-4whh-7h4c-xh74","RHSA-2025:21397","RHSA-2025:21398","ROOT-OS-DEBIAN-12-CVE-2025-39718","ROOT-OS-DEBIAN-13-CVE-2025-39718","ROOT-OS-UBUNTU-2404-CVE-2025-39718","UBUNTU-CVE-2025-39718"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A missing length validation in the Linux kernel vsock/virtio driver allows a malicious host to cause memory corruption in the guest.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":8.4,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: Validate length in packet header before skb_put()\n\nWhen receiving a vsock packet in the guest, only the virtqueue buffer\nsize is validated prior to virtio_vsock_skb_rx_put(). Unfortunately,\nvirtio_vsock_skb_rx_put() uses the length from the packet header as the\nlength argument to skb_put(), potentially resulting in SKB overflow if\nthe host has gone wonky.\n\nValidate the length as advertised by the packet header before calling\nvirtio_vsock_skb_rx_put().","ecosystems":["AlmaLinux:8","Red Hat:enterprise_linux:8::baseos","Red Hat:enterprise_linux:8::crb","Red Hat:enterprise_linux:8::nfv","Red Hat:enterprise_linux:8::realtime"],"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":"vsock/virtio: Validate length in packet header before skb_put()","id":"CVE-2025-39718","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux","linux:linux_kernel"],"type":"memory_corruption","year":"2025"},"n_packages":106,"n_references":5,"next":{"headline":"iio: imu: bno055: fix OOB access of hw_xlate array","id":"CVE-2025-39719"},"packages":[{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"bpftool","purl":"pkg:rpm/almalinux/bpftool","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel","purl":"pkg:rpm/almalinux/kernel","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-abi-stablelists","purl":"pkg:rpm/almalinux/kernel-abi-stablelists","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-core","purl":"pkg:rpm/almalinux/kernel-core","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-cross-headers","purl":"pkg:rpm/almalinux/kernel-cross-headers","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug","purl":"pkg:rpm/almalinux/kernel-debug","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-core","purl":"pkg:rpm/almalinux/kernel-debug-core","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-devel","purl":"pkg:rpm/almalinux/kernel-debug-devel","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-modules","purl":"pkg:rpm/almalinux/kernel-debug-modules","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-modules-extra","purl":"pkg:rpm/almalinux/kernel-debug-modules-extra","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-devel","purl":"pkg:rpm/almalinux/kernel-devel","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-doc","purl":"pkg:rpm/almalinux/kernel-doc","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-headers","purl":"pkg:rpm/almalinux/kernel-headers","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-modules","purl":"pkg:rpm/almalinux/kernel-modules","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-modules-extra","purl":"pkg:rpm/almalinux/kernel-modules-extra","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.rt7.425.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt","purl":"pkg:rpm/almalinux/kernel-rt","source":"ALSA-2025:21397"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.rt7.425.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-core","purl":"pkg:rpm/almalinux/kernel-rt-core","source":"ALSA-2025:21397"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.rt7.425.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug","purl":"pkg:rpm/almalinux/kernel-rt-debug","source":"ALSA-2025:21397"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.rt7.425.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-core","purl":"pkg:rpm/almalinux/kernel-rt-debug-core","source":"ALSA-2025:21397"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.rt7.425.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-devel","purl":"pkg:rpm/almalinux/kernel-rt-debug-devel","source":"ALSA-2025:21397"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.rt7.425.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-modules","purl":"pkg:rpm/almalinux/kernel-rt-debug-modules","source":"ALSA-2025:21397"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.rt7.425.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-modules-extra","purl":"pkg:rpm/almalinux/kernel-rt-debug-modules-extra","source":"ALSA-2025:21397"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.rt7.425.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-devel","purl":"pkg:rpm/almalinux/kernel-rt-devel","source":"ALSA-2025:21397"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.rt7.425.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-modules","purl":"pkg:rpm/almalinux/kernel-rt-modules","source":"ALSA-2025:21397"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.rt7.425.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-modules-extra","purl":"pkg:rpm/almalinux/kernel-rt-modules-extra","source":"ALSA-2025:21397"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-tools","purl":"pkg:rpm/almalinux/kernel-tools","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-tools-libs","purl":"pkg:rpm/almalinux/kernel-tools-libs","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-tools-libs-devel","purl":"pkg:rpm/almalinux/kernel-tools-libs-devel","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump","purl":"pkg:rpm/almalinux/kernel-zfcpdump","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-core","purl":"pkg:rpm/almalinux/kernel-zfcpdump-core","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-devel","purl":"pkg:rpm/almalinux/kernel-zfcpdump-devel","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-modules","purl":"pkg:rpm/almalinux/kernel-zfcpdump-modules","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-modules-extra","purl":"pkg:rpm/almalinux/kernel-zfcpdump-modules-extra","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"perf","purl":"pkg:rpm/almalinux/perf","source":"ALSA-2025:21398"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3-perf","purl":"pkg:rpm/almalinux/python3-perf","source":"ALSA-2025:21398"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"bpftool","purl":"pkg:rpm/redhat/bpftool","source":"RHSA-2025:21398"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"bpftool-debuginfo","purl":"pkg:rpm/redhat/bpftool-debuginfo","source":"RHSA-2025:21398"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel","purl":"pkg:rpm/redhat/kernel","source":"RHSA-2025:21398"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-abi-stablelists","purl":"pkg:rpm/redhat/kernel-abi-stablelists","source":"RHSA-2025:21398"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:4.18.0-553.84.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-core","purl":"pkg:rpm/redhat/kernel-core","source":"RHSA-2025:21398"}],"prev":{"headline":"open_tree_attr: do not allow id-mapping changes without OPEN_TREE_CLONE","id":"CVE-2025-39717"},"products":["Linux"],"published":"2025-09-05","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":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-15","vendors":["Linux"]},"summary":"A missing length validation in the Linux kernel vsock/virtio driver allows a malicious host to cause memory corruption in the guest.","url":"https://insights.sbomify.com/CVE-2025-39718/"}