{"identifier":"CVE-2026-98854","cve":{"id":"CVE-2026-98854","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nof/overlay: only treat a positive changeset id as registered\n\nof_overlay_fdt_apply() stores the idr_alloc() return value in\novcs->id before checking it. On failure the stored id is negative,\nfree_overlay_changeset()'s \"if (ovcs->id)\" check passes, idr_remove()\nis called with a negative id and list_del() runs on ovcs->ovcs_list,\nwhich is not initialized until after the id allocation. An allocation\nfailure at that point dereferences NULL.\n\nMake free_overlay_changeset() treat only a strict-positive id as\nregistered. The rest of the function already copes with a\npartially-initialized ovcs, so the error path stays a plain\ngoto err_free_ovcs.","published":"2026-10-18T16:17:39.833000+00:00","modified":"2026-10-21T13:21:49.920000+00:00","status":"Received","score":null,"severity":"UNSCORED","vector":"","cvss_version":"","affected":[],"weaknesses":[],"references":[{"url":"https://git.kernel.org/stable/c/0d1525fdcd3355672b7485d61e55df6824ab5ad1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/44081d708b5b885487bac792db78324b7b4c267d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c08a54df9d33dcd6ff089adc9434b2c008af3a39","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c875407c34dadaef0599834ad9c815f4c9f50d15","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cc688475c56d34a2b584141f9544cbe23360080d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"kev":null,"kev_checked":true,"metrics":{},"configurations":[],"source":"nvd","retrieved_at":"2026-10-28T10:23:32.895253+00:00","exploited":false,"kev_stale":false,"products":[],"priority":{"label":"Assess exposure and vendor guidance","reasons":["No higher-priority signal is available in the current stored evidence."]},"epss":{"probability":0.00156,"percentile":0.04729,"date":"2026-10-29","stale":false},"version_assessment":null},"news":[],"campaigns":[],"domains":[{"domain":"git.kernel.org","source_url":"https://git.kernel.org/stable/c/0d1525fdcd3355672b7485d61e55df6824ab5ad1","investigate_url":"https://investigate.aeglixmind.com/#git.kernel.org"}],"arsenal_url":"https://arsenal.aeglixmind.com/?cve=CVE-2026-98854","catalog_url":"https://cves.aeglixmind.com/cve/CVE-2026-98854","research_url":"https://investigate.aeglixmind.com/research/cve/CVE-2026-98854","coverage":{"news_candidates_checked":0,"campaign_candidates_checked":0,"bounded":false,"notice":"Exact CVE mentions in stored public excerpts and reviewed campaign content only. A mention is not proof of exploitation, attribution or tool suitability. Missing matches do not establish absence."}}