{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-68820 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-68820 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-2025-68820 and fix it if it is affected.\n\nWhat it is: CVE-2025-68820 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-2025-68820 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-2025-68820/ (Markdown: https://insights.sbomify.com/CVE-2025-68820/index.md)","id":"CVE-2025-68820","markdown":"https://insights.sbomify.com/CVE-2025-68820/index.md","name":"CVE-2025-68820","record":{"aliases":["BELL-CVE-2025-68820","DEBIAN-CVE-2025-68820","GHSA-mp4c-25vm-9w6p","ROOT-OS-UBUNTU-2204-CVE-2025-68820","ROOT-OS-UBUNTU-2404-CVE-2025-68820","UBUNTU-CVE-2025-68820"],"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 null pointer dereference in the Linux kernel ext4 filesystem allows local attackers to cause a system crash via corrupted filesystem images.","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":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: xattr: fix null pointer deref in ext4_raw_inode()\n\nIf ext4_get_inode_loc() fails (e.g. if it returns -EFSCORRUPTED),\niloc.bh will remain set to NULL. Since ext4_xattr_inode_dec_ref_all()\nlacks error checking, this will lead to a null pointer dereference\nin ext4_raw_inode(), called right after ext4_get_inode_loc().\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.","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":"ext4: xattr: fix null pointer deref in ext4_raw_inode()","id":"CVE-2025-68820","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":"fuse: fix readahead reclaim deadlock","id":"CVE-2025-68821"},"packages":[],"prev":{"headline":"media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()","id":"CVE-2025-68819"},"products":["Linux"],"published":"2026-01-13","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A null pointer dereference in the Linux kernel ext4 filesystem allows local attackers to cause a system crash via corrupted filesystem images.","url":"https://insights.sbomify.com/CVE-2025-68820/"}