{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-68797 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-68797 is a vulnerability in Linux, published on 13 Jan 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-2025-68797 and fix it if it is affected.\n\nWhat it is: CVE-2025-68797 is a vulnerability in Linux, published on 13 Jan 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-2025-68797 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-2025-68797/ (Markdown: https://insights.sbomify.com/CVE-2025-68797/index.md)","id":"CVE-2025-68797","markdown":"https://insights.sbomify.com/CVE-2025-68797/index.md","name":"CVE-2025-68797","record":{"aliases":["AZL-74459","BELL-CVE-2025-68797","DEBIAN-CVE-2025-68797","GHSA-rm79-9rvw-rjv2","ROOT-OS-DEBIAN-11-CVE-2025-68797","ROOT-OS-DEBIAN-12-CVE-2025-68797","ROOT-OS-DEBIAN-13-CVE-2025-68797","ROOT-OS-UBUNTU-2204-CVE-2025-68797","ROOT-OS-UBUNTU-2404-CVE-2025-68797","UBUNTU-CVE-2025-68797"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel driver","requires_auth":"low_privilege","summary":"A local attacker can cause a denial of service via a NULL pointer dereference in the applicom character driver when using a specific ioctl command.","user_interaction":"not_required","vuln_class":"null_dereference"},"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\nchar: applicom: fix NULL pointer dereference in ac_ioctl\n\nDiscovered by Atuin - Automated Vulnerability Discovery Engine.\n\nIn ac_ioctl, the validation of IndexCard and the check for a valid\nRamIO pointer are skipped when cmd is 6. However, the function\nunconditionally executes readb(apbs[IndexCard].RamIO + VERS) at the\nend.\n\nIf cmd is 6, IndexCard may reference a board that does not exist\n(where RamIO is NULL), leading to a NULL pointer dereference.\n\nFix this by skipping the readb access when cmd is 6, as this\ncommand is a global information query and does not target a specific\nboard context.","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":"char: applicom: fix NULL pointer dereference in ac_ioctl","id":"CVE-2025-68797","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2025"},"n_packages":0,"n_references":7,"next":{"headline":"perf/x86/amd: Check event before enable to avoid GPF","id":"CVE-2025-68798"},"packages":[],"prev":{"headline":"f2fs: fix to avoid updating zero-sized extent in extent cache","id":"CVE-2025-68796"},"products":["Linux"],"published":"2026-01-13","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":"2026-05-11","vendors":["Linux"]},"summary":"A local attacker can cause a denial of service via a NULL pointer dereference in the applicom character driver when using a specific ioctl command.","url":"https://insights.sbomify.com/CVE-2025-68797/"}