{"id":"CVE-2026-71973","revision":"3978db54ee724c30a6e673993113bfda","records":[{"revision":"3978db54ee724c30a6e673993113bfda","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-71973","aliases":[],"title":"U-Boot before 2026.10-rc4 Integer Overflow in SquashFS Directory Table Allocation","description":"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.","state":0,"publishedAt":"2026-09-29T21:29:21.349+00:00","modifiedAt":"2026-10-02T12:29:17.608+00:00","affected":[{"ecosystem":"Vendor product","name":"u-boot","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"u-boot\",\n                    \"product\": \"u-boot\",\n                    \"repo\": \"https://github.com/u-boot/u-boot\",\n                    \"packageURL\": \"pkg:github/u-boot/u-boot\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2026.10-rc4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","score":5.2,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","score":5.2,"severity":"MEDIUM"}],"references":["https://github.com/u-boot/u-boot/commit/561ae28cb56a082cfa90c1c421c4955bc215470b","https://github.com/u-boot/u-boot/blob/v2026.07/fs/squashfs/sqfs.c#L814","https://github.com/u-boot/u-boot","https://www.vulncheck.com/advisories/u-boot-before-2026.10-rc4-integer-overflow-in-squashfs-directory-table-allocation"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-71973","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-71973","identifiers":["CVE-2026-71973"]},"retained":false,"historicalAffected":[]}],"coverage":[]}