{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-64311 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-64311 is a high-severity use after free vulnerability in Linux kernel, published on 25 Jul 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-2026-64311 and fix it if it is affected.\n\nWhat it is: CVE-2026-64311 is a high-severity use after free vulnerability in Linux kernel, published on 25 Jul 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-2026-64311 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-2026-64311/ (Markdown: https://insights.sbomify.com/CVE-2026-64311/index.md)","id":"CVE-2026-64311","markdown":"https://insights.sbomify.com/CVE-2026-64311/index.md","name":"CVE-2026-64311","record":{"aliases":["BELL-CVE-2026-64311","DEBIAN-CVE-2026-64311","GHSA-x266-xjm8-j78q","ROOT-OS-UBUNTU-2204-CVE-2026-64311","UBUNTU-CVE-2026-64311"],"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 crypto","requires_auth":"low_privilege","summary":"A use-after-free vulnerability in the Linux kernel's loongson-rng driver allows attackers to potentially execute code or cause a denial of service.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: loongson - Remove broken and unused loongson-rng\n\nThe loongson-rng rng_alg has several vulnerabilities, including not\nproviding forward security, and a use-after-free bug due to the use of\nwait_for_completion_interruptible().\n\nMeanwhile, the rng_alg framework doesn't really have any purpose in the\nfirst place other than to access the software algorithms crypto/drbg.c\nand crypto/jitterentropy.c.  Hardware-specific rng_algs have no\nin-kernel user, and unlike hwrng there's no feed into the actual Linux\nRNG.  As such, there's really no point to this code.  There are of\ncourse other rng_alg drivers that are similarly unused, but they're\nsimilarly in the process of being phased out, e.g.\nhttps://lore.kernel.org/r/20260529193648.18172-1-ebiggers@kernel.org and\nhttps://lore.kernel.org/r/20260529220430.34135-1-ebiggers@kernel.org\n\nGiven that, there's no point in fixing forward these vulnerabilities,\nand it makes much more sense to simply roll back the addition of this\ndriver.  If this platform provides TRNG (not PRNG) functionality, it\ncould make sense to add a hwrng driver, but it would be quite different.","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":"crypto: loongson - Remove broken and unused loongson-rng","id":"CVE-2026-64311","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"crypto: pcrypt - restore callback for non-parallel fallback","id":"CVE-2026-64312"},"packages":[],"prev":{"headline":"crypto: ccp - Do not initialize SNP for SEV ioctls","id":"CVE-2026-64310"},"products":["Linux"],"published":"2026-07-25","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":"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":"2026-08-17","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel's loongson-rng driver allows attackers to potentially execute code or cause a denial of service.","url":"https://insights.sbomify.com/CVE-2026-64311/"}