{"id":"CVE-2026-80723","revision":"064f4c67f1214b558956c16fcf4b6e50","records":[{"revision":"064f4c67f1214b558956c16fcf4b6e50","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80723","aliases":[],"title":"of: reserved_mem: prevent OOB when too many dynamic regions are defined","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nof: reserved_mem: prevent OOB when too many dynamic regions are defined\n\nOn boot, fdt_scan_reserved_mem() saves each dynamically-placed\n/reserved-memory subnode into a local array of size\nMAX_RESERVED_REGIONS.\n\nIf the device tree defines more than MAX_RESERVED_REGIONS\ndynamically-placed regions, fdt_scan_reserved_mem() writes past the\nend of the local array.\n\nAdd a bounds check that logs an error and skips the excess regions,\nrestoring the original behavior.","state":0,"publishedAt":"2026-08-28T06:53:18.485+00:00","modifiedAt":"2026-10-16T19:26:35.582+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/of/of_reserved_mem.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"9a0fe62f93ede02c27aaca81112af1e59c8c0979\",\n                            \"lessThan\": \"68d27250c9e81ab7764603e346c2b1017cb53adf\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8a6e02d0c00e7b62e6acb74146878bb91e9e7e31\",\n                            \"lessThan\": \"cfa7e2734877330d6c10e0f33953905486c4530c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8a6e02d0c00e7b62e6acb74146878bb91e9e7e31\",\n                            \"lessThan\": \"de8ccbd6bf4efe7a059e2c483789936009e10f42\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8a6e02d0c00e7b62e6acb74146878bb91e9e7e31\",\n                            \"lessThan\": \"db3dbdfea1b8f38774419c5c2c14e4b81c48708d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.12.13\",\n                            \"lessThan\": \"6.12.103\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/of/of_reserved_mem.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.13\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.13\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.103\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.44\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.8\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.4,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/68d27250c9e81ab7764603e346c2b1017cb53adf","https://git.kernel.org/stable/c/cfa7e2734877330d6c10e0f33953905486c4530c","https://git.kernel.org/stable/c/de8ccbd6bf4efe7a059e2c483789936009e10f42","https://git.kernel.org/stable/c/db3dbdfea1b8f38774419c5c2c14e4b81c48708d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80723","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80723","identifiers":["CVE-2026-80723"]},"retained":false,"historicalAffected":[]}],"coverage":[]}