{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40322 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40322 is a high-severity vulnerability in Linux, published on 8 Dec 2025. 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-2025-40322 and fix it if it is affected.\n\nWhat it is: CVE-2025-40322 is a high-severity vulnerability in Linux, published on 8 Dec 2025. 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-2025-40322 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-2025-40322/ (Markdown: https://insights.sbomify.com/CVE-2025-40322/index.md)","id":"CVE-2025-40322","markdown":"https://insights.sbomify.com/CVE-2025-40322/index.md","name":"CVE-2025-40322","record":{"aliases":["BELL-CVE-2025-40322","DEBIAN-CVE-2025-40322","GHSA-hcc6-6437-vwm2","ROOT-OS-DEBIAN-12-CVE-2025-40322","ROOT-OS-DEBIAN-13-CVE-2025-40322","ROOT-OS-UBUNTU-2204-CVE-2025-40322","ROOT-OS-UBUNTU-2404-CVE-2025-40322","UBUNTU-CVE-2025-40322"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"An out-of-bounds read in the Linux kernel framebuffer driver allows attackers to read memory beyond the font array boundaries.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: bitblit: bound-check glyph index in bit_putcs*\n\nbit_putcs_aligned()/unaligned() derived the glyph pointer from the\ncharacter value masked by 0xff/0x1ff, which may exceed the actual font's\nglyph count and read past the end of the built-in font array.\nClamp the index to the actual glyph count before computing the address.\n\nThis fixes a global out-of-bounds read reported by syzbot.","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":"fbdev: bitblit: bound-check glyph index in bit_putcs*","id":"CVE-2025-40322","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2025"},"n_packages":0,"n_references":8,"next":{"headline":"fbcon: Set fb_display[i]-\u003emode to NULL when the mode is released","id":"CVE-2025-40323"},"packages":[],"prev":{"headline":"wifi: brcmfmac: fix crash while sending Action Frames in standalone AP Mode","id":"CVE-2025-40321"},"products":["Linux"],"published":"2025-12-08","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-05","vendors":["Linux"]},"summary":"An out-of-bounds read in the Linux kernel framebuffer driver allows attackers to read memory beyond the font array boundaries.","url":"https://insights.sbomify.com/CVE-2025-40322/"}