{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-53311 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-53311 is a medium-severity vulnerability in Linux kernel, published on 26 Jun 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-2026-53311 and fix it if it is affected.\n\nWhat it is: CVE-2026-53311 is a medium-severity vulnerability in Linux kernel, published on 26 Jun 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-2026-53311 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-2026-53311/ (Markdown: https://insights.sbomify.com/CVE-2026-53311/index.md)","id":"CVE-2026-53311","markdown":"https://insights.sbomify.com/CVE-2026-53311/index.md","name":"CVE-2026-53311","record":{"aliases":["BELL-CVE-2026-53311","DEBIAN-CVE-2026-53311","GHSA-32q2-cq6r-mpm8","UBUNTU-CVE-2026-53311"],"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":"An uninitialized value in the Linux kernel FUSE filesystem can lead to a crash or undefined behavior during file 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":[{"id":"CWE-908","name":"Use of Uninitialized Resource"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: fix uninit-value in fuse_dentry_revalidate()\n\nfuse_dentry_revalidate() may be called with a dentry that didn't had\n-\u003ed_time initialised.  The issue was found with KMSAN, where lookup_open()\ncalls __d_alloc(), followed by d_revalidate(), as shown below:\n\n=====================================================\nBUG: KMSAN: uninit-value in fuse_dentry_revalidate+0x150/0x13d0 fs/fuse/dir.c:394\n fuse_dentry_revalidate+0x150/0x13d0 fs/fuse/dir.c:394\n d_revalidate fs/namei.c:1030 [inline]\n lookup_open fs/namei.c:4405 [inline]\n open_last_lookups fs/namei.c:4583 [inline]\n path_openat+0x1614/0x64c0 fs/namei.c:4827\n do_file_open+0x2aa/0x680 fs/namei.c:4859\n[...]\n\nUninit was created at:\n slab_post_alloc_hook mm/slub.c:4466 [inline]\n slab_alloc_node mm/slub.c:4788 [inline]\n kmem_cache_alloc_lru_noprof+0x382/0x1280 mm/slub.c:4807\n __d_alloc+0x55/0xa00 fs/dcache.c:1740\n d_alloc_parallel+0x99/0x2740 fs/dcache.c:2604\n lookup_open fs/namei.c:4398 [inline]\n open_last_lookups fs/namei.c:4583 [inline]\n path_openat+0x135f/0x64c0 fs/namei.c:4827\n do_file_open+0x2aa/0x680 fs/namei.c:4859\n[...]\n=====================================================","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":"fuse: fix uninit-value in fuse_dentry_revalidate()","id":"CVE-2026-53311","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":3,"next":{"headline":"iommu/riscv: Remove overflows on the invalidation path","id":"CVE-2026-53312"},"packages":[],"prev":{"headline":"soc/tegra: cbb: Fix cross-fabric target timeout lookup","id":"CVE-2026-53310"},"products":["Linux"],"published":"2026-06-26","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":"2026-06-26","vendors":["Linux"]},"summary":"An uninitialized value in the Linux kernel FUSE filesystem can lead to a crash or undefined behavior during file operations.","url":"https://insights.sbomify.com/CVE-2026-53311/"}