{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-21927 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-21927 is a critical memory corruption vulnerability in Linux kernel, published on 1 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-21927 and fix it if it is affected.\n\nWhat it is: CVE-2025-21927 is a critical memory corruption vulnerability in Linux kernel, published on 1 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-21927 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-2025-21927/ (Markdown: https://insights.sbomify.com/CVE-2025-21927/index.md)","id":"CVE-2025-21927","markdown":"https://insights.sbomify.com/CVE-2025-21927/index.md","name":"CVE-2025-21927","record":{"aliases":["AZL-59922","AZL-59952","BELL-CVE-2025-21927","DEBIAN-CVE-2025-21927","GHSA-p4qc-cp8p-44wh","RHSA-2025:4339","RHSA-2025:4340","RHSA-2025:4469","RHSA-2025:4471","RHSA-2025:4496","RHSA-2025:4497","RHSA-2025:4498","RHSA-2025:4499","RHSA-2025:7501","ROOT-OS-DEBIAN-11-CVE-2025-21927","ROOT-OS-DEBIAN-12-CVE-2025-21927","ROOT-OS-UBUNTU-2204-CVE-2025-21927","ROOT-OS-UBUNTU-2404-CVE-2025-21927","UBUNTU-CVE-2025-21927"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Linux kernel","requires_auth":"none","summary":"A remote attacker can trigger memory corruption in the Linux kernel's NVMe-TCP driver by sending malformed packets when header digests are enabled.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/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\nnvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu()\n\nnvme_tcp_recv_pdu() doesn't check the validity of the header length.\nWhen header digests are enabled, a target might send a packet with an\ninvalid header length (e.g. 255), causing nvme_tcp_verify_hdgst()\nto access memory outside the allocated area and cause memory corruptions\nby overwriting it with the calculated digest.\n\nFix this by rejecting packets with an unexpected header length.","ecosystems":["Red Hat:enterprise_linux:10.0","Red Hat:enterprise_linux:9::baseos","Red Hat:rhel_e4s:9.0::appstream","Red Hat:rhel_e4s:9.0::baseos","Red Hat:rhel_e4s:9.0::nfv","Red Hat:rhel_e4s:9.0::realtime","Red Hat:rhel_eus:9.2::appstream","Red Hat:rhel_eus:9.2::baseos","Red Hat:rhel_eus:9.2::crb","Red Hat:rhel_eus:9.2::nfv","Red Hat:rhel_eus:9.2::realtime","Red Hat:rhel_eus:9.4::baseos"],"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":"nvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu()","id":"CVE-2025-21927","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"memory_corruption","year":"2025"},"n_packages":325,"n_references":4,"next":{"headline":"HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove()","id":"CVE-2025-21928"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:10.0","fixed":["0:6.12.0-55.11.1.el10_0"],"introduced":["0"],"last_affected":[],"package":"kernel","purl":"pkg:rpm/redhat/kernel","source":"RHSA-2025:7501"},{"ecosystem":"Red Hat:enterprise_linux:10.0","fixed":["0:6.12.0-55.11.1.el10_0"],"introduced":["0"],"last_affected":[],"package":"kernel-64k","purl":"pkg:rpm/redhat/kernel-64k","source":"RHSA-2025:7501"},{"ecosystem":"Red Hat:enterprise_linux:10.0","fixed":["0:6.12.0-55.11.1.el10_0"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-core","purl":"pkg:rpm/redhat/kernel-64k-core","source":"RHSA-2025:7501"},{"ecosystem":"Red Hat:enterprise_linux:10.0","fixed":["0:6.12.0-55.11.1.el10_0"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug","purl":"pkg:rpm/redhat/kernel-64k-debug","source":"RHSA-2025:7501"},{"ecosystem":"Red Hat:enterprise_linux:10.0","fixed":["0:6.12.0-55.11.1.el10_0"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-core","purl":"pkg:rpm/redhat/kernel-64k-debug-core","source":"RHSA-2025:7501"},{"ecosystem":"Red Hat:enterprise_linux:10.0","fixed":["0:6.12.0-55.11.1.el10_0"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-debuginfo","purl":"pkg:rpm/redhat/kernel-64k-debug-debuginfo","source":"RHSA-2025:7501"},{"ecosystem":"Red Hat:enterprise_linux:10.0","fixed":["0:6.12.0-55.11.1.el10_0"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-devel","purl":"pkg:rpm/redhat/kernel-64k-debug-devel","source":"RHSA-2025:7501"},{"ecosystem":"Red Hat:enterprise_linux:10.0","fixed":["0:6.12.0-55.11.1.el10_0"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-devel-matched","purl":"pkg:rpm/redhat/kernel-64k-debug-devel-matched","source":"RHSA-2025:7501"},{"ecosystem":"Red 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Hat:enterprise_linux:10.0","fixed":["0:6.12.0-55.11.1.el10_0"],"introduced":["0"],"last_affected":[],"package":"kernel-modules","purl":"pkg:rpm/redhat/kernel-modules","source":"RHSA-2025:7501"},{"ecosystem":"Red Hat:enterprise_linux:10.0","fixed":["0:6.12.0-55.11.1.el10_0"],"introduced":["0"],"last_affected":[],"package":"kernel-modules-core","purl":"pkg:rpm/redhat/kernel-modules-core","source":"RHSA-2025:7501"},{"ecosystem":"Red Hat:enterprise_linux:10.0","fixed":["0:6.12.0-55.11.1.el10_0"],"introduced":["0"],"last_affected":[],"package":"kernel-modules-extra","purl":"pkg:rpm/redhat/kernel-modules-extra","source":"RHSA-2025:7501"},{"ecosystem":"Red Hat:enterprise_linux:10.0","fixed":["0:6.12.0-55.11.1.el10_0"],"introduced":["0"],"last_affected":[],"package":"kernel-rt","purl":"pkg:rpm/redhat/kernel-rt","source":"RHSA-2025:7501"}],"prev":{"headline":"net: gso: fix ownership in __udp_gso_segment","id":"CVE-2025-21926"},"products":["Linux"],"published":"2025-04-01","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":"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":"2026-10-21","vendors":["Linux"]},"summary":"A remote attacker can trigger memory corruption in the Linux kernel's NVMe-TCP driver by sending malformed packets when header digests are enabled.","url":"https://insights.sbomify.com/CVE-2025-21927/"}