{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-23009 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-23009 is a medium-severity vulnerability in Linux kernel, published on 25 Jan 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-2026-23009 and fix it if it is affected.\n\nWhat it is: CVE-2026-23009 is a medium-severity vulnerability in Linux kernel, published on 25 Jan 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-2026-23009 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-2026-23009/ (Markdown: https://insights.sbomify.com/CVE-2026-23009/index.md)","id":"CVE-2026-23009","markdown":"https://insights.sbomify.com/CVE-2026-23009/index.md","name":"CVE-2026-23009","record":{"aliases":["BELL-CVE-2026-23009","DEBIAN-CVE-2026-23009","GHSA-h2fj-cf53-2c8q","UBUNTU-CVE-2026-23009"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A null pointer dereference in the Linux kernel xHCI sideband driver can cause a system crash during device removal or resume operations.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"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":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxhci: sideband: don't dereference freed ring when removing sideband endpoint\n\nxhci_sideband_remove_endpoint() incorrecly assumes that the endpoint is\nrunning and has a valid transfer ring.\n\nLianqin reported a crash during suspend/wake-up stress testing, and\nfound the cause to be dereferencing a non-existing transfer ring\n'ep-\u003ering' during xhci_sideband_remove_endpoint().\n\nThe endpoint and its ring may be in unknown state if this function\nis called after xHCI was reinitialized in resume (lost power), or if\ndevice is being re-enumerated, disconnected or endpoint already dropped.\n\nFix this by both removing unnecessary ring access, and by checking\nep-\u003ering exists before dereferencing it. Also make sure endpoint is\nrunning before attempting to stop it.\n\nRemove the xhci_initialize_ring_info() call during sideband endpoint\nremoval as is it only initializes ring structure enqueue, dequeue and\ncycle state values to their starting values without changing actual\nhardware enqueue, dequeue and cycle state. Leaving them out of sync\nis worse than leaving it as it is. The endpoint will get freed in after\nthis in most usecases.\n\nIf the (audio) class driver want's to reuse the endpoint after offload\nthen it is up to the class driver to ensure endpoint is properly set up.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-08-05","github_poc":1,"max_poc_stars":1,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-08-05T21:32:56Z","kind":"github_poc","ref":"https://github.com/George0Papasotiriou/CVE-2026-23009-DICOM-Network-Image-Injection-Without-Authentication","stars":1,"title":null}],"tier":"poc_unverified"},"has_fix":true,"headline":"xhci: sideband: don't dereference freed ring when removing sideband endpoint","id":"CVE-2026-23009","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"null_dereference","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"ipv6: Fix use-after-free in inet6_addr_del().","id":"CVE-2026-23010"},"packages":[],"prev":{"headline":"drm/vmwgfx: Fix KMS with 3D on HW version 10","id":"CVE-2026-23008"},"products":["Linux"],"published":"2026-01-25","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":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A null pointer dereference in the Linux kernel xHCI sideband driver can cause a system crash during device removal or resume operations.","url":"https://insights.sbomify.com/CVE-2026-23009/"}