{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-31400 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-31400 is a medium-severity denial of service vulnerability in Linux kernel, published on 3 Apr 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-2026-31400 and fix it if it is affected.\n\nWhat it is: CVE-2026-31400 is a medium-severity denial of service vulnerability in Linux kernel, published on 3 Apr 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-2026-31400 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-2026-31400/ (Markdown: https://insights.sbomify.com/CVE-2026-31400/index.md)","id":"CVE-2026-31400","markdown":"https://insights.sbomify.com/CVE-2026-31400/index.md","name":"CVE-2026-31400","record":{"aliases":["BELL-CVE-2026-31400","DEBIAN-CVE-2026-31400","GHSA-73jc-99jj-ch5v","ROOT-OS-DEBIAN-11-CVE-2026-31400","ROOT-OS-DEBIAN-12-CVE-2026-31400","ROOT-OS-DEBIAN-13-CVE-2026-31400","ROOT-OS-UBUNTU-2204-CVE-2026-31400","ROOT-OS-UBUNTU-2404-CVE-2026-31400","UBUNTU-CVE-2026-31400"],"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 memory leak in the Linux kernel's sunrpc module allows attackers to exhaust system memory by closing file descriptors during cache reads, causing denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"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":[{"id":"CWE-401","name":"Missing Release of Memory after Effective Lifetime"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsunrpc: fix cache_request leak in cache_release\n\nWhen a reader's file descriptor is closed while in the middle of reading\na cache_request (rp-\u003eoffset != 0), cache_release() decrements the\nrequest's readers count but never checks whether it should free the\nrequest.\n\nIn cache_read(), when readers drops to 0 and CACHE_PENDING is clear, the\ncache_request is removed from the queue and freed along with its buffer\nand cache_head reference. cache_release() lacks this cleanup.\n\nThe only other path that frees requests with readers == 0 is\ncache_dequeue(), but it runs only when CACHE_PENDING transitions from\nset to clear. If that transition already happened while readers was\nstill non-zero, cache_dequeue() will have skipped the request, and no\nsubsequent call will clean it up.\n\nAdd the same cleanup logic from cache_read() to cache_release(): after\ndecrementing readers, check if it reached 0 with CACHE_PENDING clear,\nand if so, dequeue and free the cache_request.","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":"sunrpc: fix cache_request leak in cache_release","id":"CVE-2026-31400","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"HID: bpf: prevent buffer overflow in hid_hw_request","id":"CVE-2026-31401"},"packages":[],"prev":{"headline":"nvdimm/bus: Fix potential use after free in asynchronous initialization","id":"CVE-2026-31399"},"products":["Linux"],"published":"2026-04-03","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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A memory leak in the Linux kernel's sunrpc module allows attackers to exhaust system memory by closing file descriptors during cache reads, causing denial of service.","url":"https://insights.sbomify.com/CVE-2026-31400/"}