{"schema":"threatline.record/2","record":{"id":"CVE-2026-71973","aliases":[],"summary":"U-Boot before 2026.10-rc4 Integer Overflow in SquashFS Directory Table Allocation","details":"U-Boot before 2026.10-rc4 contains an integer overflow vulnerability in sqfs_read_directory_table() function when allocating the directory table buffer. Attackers can supply a crafted SquashFS image with an attacker-controlled superblock metablks_count value that causes heap buffer under-allocation and out-of-bounds writes, corrupting heap memory and crashing 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-2026-71973","source_modified_at":"2026-10-02T12:29:17.608Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"u-boot","vendor":"u-boot","versions":[{"version":"0","lessThan":"2026.10-rc4","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-71973","source_modified_at":"2026-10-02T12:29:17.608Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"u-boot","ecosystem":null},"version":"2026.10-rc4","basis":"first unaffected version stated in the CVE record"}],"cvss":5.2,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00185,"percentile":0.07716,"score_date":"2026-10-23"},"published_at":"2026-09-29T21:29:21.349Z","modified_at":"2026-10-02T12:29:17.608Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-71973","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-02T12:29:17.608Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-71973","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/561ae28cb56a082cfa90c1c421c4955bc215470b","tags":["patch"]},{"source":"CVE List","url":"https://github.com/u-boot/u-boot/blob/v2026.07/fs/squashfs/sqfs.c#L814","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-rc4-integer-overflow-in-squashfs-directory-table-allocation","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":"no","technical_impact":"partial","assessed_at":"2026-10-02T12:29:06.594431Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-02T12:29:17.608Z","content_hash":"dbfff5196b417cec583259e566c092d7e4d304f5846f17dfdeb5c0e53b5931c4"}}