{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-53613 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-53613 is a high-severity vulnerability in util-linux, published on 14 Oct 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-2026-53613 and fix it if it is affected.\n\nWhat it is: CVE-2026-53613 is a high-severity vulnerability in util-linux, published on 14 Oct 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-2026-53613 in the wild and no public exploit code.\n\nAffected product: util-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-2026-53613/ (Markdown: https://insights.sbomify.com/CVE-2026-53613/index.md)","id":"CVE-2026-53613","markdown":"https://insights.sbomify.com/CVE-2026-53613/index.md","name":"CVE-2026-53613","record":{"aliases":["ALPINE-CVE-2026-53613","AZL-108555","BELL-CVE-2026-53613","DEBIAN-CVE-2026-53613","ECHO-c24c-41a0-9a74","GHSA-8gj5-72r3-428g","ROOT-OS-DEBIAN-11-CVE-2026-53613","UBUNTU-CVE-2026-53613"],"analysis":{"component_type":"operating_system","fix_type":"upgrade","impacts":["privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Linux utilities","requires_auth":"low_privilege","summary":"Local attackers can exploit a race condition in util-linux mount to escalate privileges to root by redirecting authorized mounts to sensitive system paths.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-367","name":"Time-of-check Time-of-use (TOCTOU) Race Condition"}],"description":"util-linux is a random collection of Linux utilities. In util-linux 2.17 through 2.41.6 and 2.42 through 2.42.3, and in 2.42.4 when the legacy `mount(2)` path is used without `/proc`, restricted non-root `mount` requests validate an `/etc/fstab` target before the mount operation re-resolves that pathname. A local low-privileged user authorized by an fstab `user` or `users` entry whose target has an attacker-writable ancestor can use `renameat2(RENAME_EXCHANGE)` to swap a path component and redirect an authorized mount to a root-owned location, such as mounting attacker-controlled content over `/etc/sudoers.d`, and thereby gain root privileges. Versions 2.41.5 and 2.42.2 pin targets for the new mount API, and 2.42.4 pins legacy targets through `/proc/self/fd`; the documented legacy fallback without `/proc` remains affected.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-08-26","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-08-26T09:25:06Z","kind":"github_poc","ref":"https://github.com/mohamedjawady/CVE-2026-53613-poc","stars":0,"title":null}],"tier":"poc_unverified"},"has_fix":true,"headline":"util-linux mount target TOCTOU allows local privilege escalation","id":"CVE-2026-53613","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"race_condition","year":"2026"},"n_packages":0,"n_references":14,"next":{"headline":"util-linux LIBMOUNT_FORCE_MOUNT2 allows nosuid and noexec bypass","id":"CVE-2026-53614"},"packages":[],"prev":{"headline":"util-linux mount hook_owner TOCTOU allows local privilege escalation","id":"CVE-2026-53612"},"products":["util-linux"],"published":"2026-10-14","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)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-15","vendors":["util-linux"]},"summary":"Local attackers can exploit a race condition in util-linux mount to escalate privileges to root by redirecting authorized mounts to sensitive system paths.","url":"https://insights.sbomify.com/CVE-2026-53613/"}