{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-98636 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-98636 is a vulnerability in Linux, published on 18 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-98636 and fix it if it is affected.\n\nWhat it is: CVE-2026-98636 is a vulnerability in Linux, published on 18 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-98636 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-2026-98636/ (Markdown: https://insights.sbomify.com/CVE-2026-98636/index.md)","id":"CVE-2026-98636","markdown":"https://insights.sbomify.com/CVE-2026-98636/index.md","name":"CVE-2026-98636","record":{"aliases":["AZL-109316","BELL-CVE-2026-98636","DEBIAN-CVE-2026-98636","GHSA-wgfg-84p9-xmpv","UBUNTU-CVE-2026-98636"],"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":"none","summary":"A local attacker can cause a denial of service by mounting a malicious SquashFS image that triggers a shift-out-of-bounds error in the Linux kernel.","user_interaction":"required","vuln_class":"integer_overflow"},"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\nsquashfs: Add dictionary size range check to prevent shift-out-of-bounds\n\nWhen an abnormal SquashFS image (COMP_OPTS flag is 1 but dictionary size\nis 0) is mounted, and performs shift operations using dictionarysize, the\nshift exponent is -1, causing a shift-out-of-bounds.\n\nDetail as below:\nsquashfs_comp_opts(msblk, buffer, length)\n  squashfs_xz_comp_opts()\n    if (comp_opts)\n      n = ffs(opts-\u003edict_size) - 1;\u003c----opts-\u003edict_size=0, n=-1\n      if (opts-\u003edict_size != (1 \u003c\u003c n) \u0026\u0026 opts-\u003edict_size !=\n\t  \t(1 \u003c\u003c n) + (1 \u003c\u003c (n + 1))) \u003c----shift-out-of-bounds\n\nFix it by adding a dictionary size range check before the shift operation.","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":"squashfs: Add dictionary size range check to prevent shift-out-of-bounds","id":"CVE-2026-98636","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"KVM: arm64: Do not clear VM-wide SVE feature on vCPU init failure","id":"CVE-2026-98637"},"packages":[],"prev":{"headline":"scsi: block: Fix zones_cond out-of-bounds write on zone report","id":"CVE-2026-98635"},"products":["Linux"],"published":"2026-10-18","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":"2026-10-19","vendors":["Linux"]},"summary":"A local attacker can cause a denial of service by mounting a malicious SquashFS image that triggers a shift-out-of-bounds error in the Linux kernel.","url":"https://insights.sbomify.com/CVE-2026-98636/"}