{"schema":"threatline.record/2","record":{"id":"CVE-2026-71971","aliases":[],"summary":"U-Boot before 2026.10-rc3 Out-of-Bounds Write in IP Fragment Reassembly","details":"U-Boot before 2026.10-rc3 with CONFIG_IP_DEFRAG enabled contains an out-of-bounds write vulnerability in the __net_defragment() function in net/net.c. Remote attackers can send a crafted IP fragment with non-zero offset and More-Fragments flag set during netboot to corrupt adjacent memory and crash the bootloader.","categories":["Unclassified"],"product":"u-boot","vendor":"u-boot","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-71971","source_modified_at":"2026-09-30T14:03:55.512Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"u-boot","vendor":"u-boot","versions":[{"version":"0","lessThan":"2026.10-rc3","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-71971","source_modified_at":"2026-09-30T14:03:55.512Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"u-boot","ecosystem":null},"version":"2026.10-rc3","basis":"first unaffected version stated in the CVE record"}],"cvss":8.8,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00375,"percentile":0.30285,"score_date":"2026-10-23"},"published_at":"2026-09-29T21:29:20.055Z","modified_at":"2026-09-30T14:03:55.512Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-71971","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-30T14:03:55.512Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-71971","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/u-boot/u-boot/commit/04ca915d5bf39dda5d1bce62d04d2b59d293c5b9","tags":["patch"]},{"source":"CVE List","url":"https://github.com/u-boot/u-boot/blob/v2026.07/net/net.c#L975","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/u-boot/u-boot","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/u-boot-before-2026.10-rc3-out-of-bounds-write-in-ip-fragment-reassembly","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-09-30T14:03:42.839708Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-09-30T14:03:55.512Z","content_hash":"35c00cdd7b993532e2f5085f0180915bb54ae9de669cdcfa77ac289c524d8f41"}}