{"id":"CVE-2026-89954","revision":"c47e4e4a5b9c450586913bddc12edf53","records":[{"revision":"c47e4e4a5b9c450586913bddc12edf53","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89954","aliases":[],"title":"mtd: afs: validate v2 image info bounds","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: afs: validate v2 image info bounds\n\nThe AFS v2 parser uses footer[8] to locate the image information block\ninside the current erase block, then uses the image information\nregion_count to walk entries from a fixed local array. The footer offset\nand region count come from flash contents and are not checked against the\nerase block or the local image-info array before use.\n\nReject v2 entries whose image information offset would underflow the\nerase block calculation, and reject region counts that cannot fit in the\nlocal image-info array before walking region entries.","state":0,"publishedAt":"2026-09-16T10:32:38.355+00:00","modifiedAt":"2026-10-19T08:55:28.24+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/mtd/parsers/afs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"b7cf5e2830bbb128699d7635ce8404b7f605bc95\",\n                            \"lessThan\": \"1bec05a68414cf8d0cab6cb42445b8603f32ffc4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b7cf5e2830bbb128699d7635ce8404b7f605bc95\",\n                            \"lessThan\": \"3ad8ff12fd44b08af9212ac4883a7e29d2ab7348\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b7cf5e2830bbb128699d7635ce8404b7f605bc95\",\n                            \"lessThan\": \"875daa3c750814ff2e2dc050239c390048f0bcd0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b7cf5e2830bbb128699d7635ce8404b7f605bc95\",\n                            \"lessThan\": \"da740539e8f370767317e24615349b9342a6e773\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b7cf5e2830bbb128699d7635ce8404b7f605bc95\",\n                            \"lessThan\": \"1edea8900ca3e405c1421d8b5c29f97107874f72\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b7cf5e2830bbb128699d7635ce8404b7f605bc95\",\n                            \"lessThan\": \"18916f475057cbd2fb8ea6ae86e6b85884ad1d53\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b7cf5e2830bbb128699d7635ce8404b7f605bc95\",\n                            \"lessThan\": \"d14e6298139f58a87a87d7022e26a7f37f0ddce7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b7cf5e2830bbb128699d7635ce8404b7f605bc95\",\n                            \"lessThan\": \"e9290031f736e99ad17c25c00311c92c266843b7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\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/mtd/parsers/afs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.51\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.5\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\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:L/A:H","score":8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/1bec05a68414cf8d0cab6cb42445b8603f32ffc4","https://git.kernel.org/stable/c/3ad8ff12fd44b08af9212ac4883a7e29d2ab7348","https://git.kernel.org/stable/c/875daa3c750814ff2e2dc050239c390048f0bcd0","https://git.kernel.org/stable/c/da740539e8f370767317e24615349b9342a6e773","https://git.kernel.org/stable/c/1edea8900ca3e405c1421d8b5c29f97107874f72","https://git.kernel.org/stable/c/18916f475057cbd2fb8ea6ae86e6b85884ad1d53","https://git.kernel.org/stable/c/d14e6298139f58a87a87d7022e26a7f37f0ddce7","https://git.kernel.org/stable/c/e9290031f736e99ad17c25c00311c92c266843b7"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89954","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89954","identifiers":["CVE-2026-89954"]},"retained":false,"historicalAffected":[]}],"coverage":[]}