{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-90086 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-90086 is a vulnerability in Linux, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-90086 and fix it if it is affected.\n\nWhat it is: CVE-2026-90086 is a vulnerability in Linux, published on 17 Sep 2026. 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-2026-90086 in the wild and no public exploit code.\n\nAffected product: 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-2026-90086/ (Markdown: https://insights.sbomify.com/CVE-2026-90086/index.md)","id":"CVE-2026-90086","markdown":"https://insights.sbomify.com/CVE-2026-90086/index.md","name":"CVE-2026-90086","record":{"aliases":["BELL-CVE-2026-90086","DEBIAN-CVE-2026-90086","GHSA-5vhq-jqrp-ph25","UBUNTU-CVE-2026-90086"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A flaw in the Linux kernel's XDP zero-copy path allows unrequested timestamp overwrites in TX metadata, potentially corrupting data.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: honor XDP_TX_METADATA in zero-copy path\n\nThe zero-copy path reads TX metadata whenever the UMEM has metadata space,\neven if the descriptor does not set XDP_TX_METADATA. Pass descriptor\noptions through the metadata helpers and ignore metadata unless the option\nis set.\n\nThis does not fix the existing per-WQE metadata handling for mlx5 MPWQEs.\nOnly the descriptor that starts a session passes through\nxsk_tx_metadata_request() and configures offload state shared by the batch.\nMetadata on descriptors joining an open session is therefore not validated\nand does not configure its requested offloads. In addition, a non-NULL\nmetadata pointer from such a descriptor is treated as a timestamp\ncompletion request even when XDP_TXMD_FLAGS_TIMESTAMP is not set, so its\nmetadata union can be overwritten with an unrequested timestamp. Fixing\nmixed metadata states within one MPWQE requires a separate change.","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":"xsk: honor XDP_TX_METADATA in zero-copy path","id":"CVE-2026-90086","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Bluetooth: do not leak an hci_conn when a second LE connect is rejected","id":"CVE-2026-90087"},"packages":[],"prev":{"headline":"octeontx2-af: fix NULL deref in NIX TM tree debugfs read path","id":"CVE-2026-90085"},"products":["Linux"],"published":"2026-09-17","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-21","vendors":["Linux"]},"summary":"A flaw in the Linux kernel's XDP zero-copy path allows unrequested timestamp overwrites in TX metadata, potentially corrupting data.","url":"https://insights.sbomify.com/CVE-2026-90086/"}