{"id":"CVE-2026-23434","revision":null,"records":[{"revision":"89cf226a0e3245c39ee602f2bca1fc95","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-23434","aliases":[],"title":"mtd: rawnand: serialize lock/unlock against other NAND operations","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: rawnand: serialize lock/unlock against other NAND operations\n\nnand_lock() and nand_unlock() call into chip->ops.lock_area/unlock_area\nwithout holding the NAND device lock. On controllers that implement\nSET_FEATURES via multiple low-level PIO commands, these can race with\nconcurrent UBI/UBIFS background erase/write operations that hold the\ndevice lock, resulting in cmd_pending conflicts on the NAND controller.\n\nAdd nand_get_device()/nand_release_device() around the lock/unlock\noperations to serialize them against all other NAND controller access.","state":0,"publishedAt":"2026-04-03T15:15:19.45+00:00","modifiedAt":"2026-10-19T18:35:43.464+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/nand/raw/nand_base.c\"\n ],\n \"versions\": [\n {\n \"version\": \"92270086b7e5ada7ab381c06cc3da2e95ed17088\",\n \"lessThan\": \"28ea836cc44cb8b89c1c174707ead0c1133c60e9\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"92270086b7e5ada7ab381c06cc3da2e95ed17088\",\n \"lessThan\": \"fe4a73c3dd48308149d57a10c2761e1d36ced7ba\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"92270086b7e5ada7ab381c06cc3da2e95ed17088\",\n \"lessThan\": \"ce5229e78078e437704157eb542f43a6f83b429b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"92270086b7e5ada7ab381c06cc3da2e95ed17088\",\n \"lessThan\": \"a80291e577b44593a724d6cd64c14337c78f194d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"92270086b7e5ada7ab381c06cc3da2e95ed17088\",\n \"lessThan\": \"f71ce0ae5aefe39dd5b2f996c0e08550d2153ad2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"92270086b7e5ada7ab381c06cc3da2e95ed17088\",\n \"lessThan\": \"5fd5c078af23cb353507aa522e09d557d7eaef04\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"92270086b7e5ada7ab381c06cc3da2e95ed17088\",\n \"lessThan\": \"f25446e2c28939753d3b62d34dfda49952b2557d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"92270086b7e5ada7ab381c06cc3da2e95ed17088\",\n \"lessThan\": \"bab2bc6e850a697a23b9e5f0e21bb8c187615e95\",\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/nand/raw/nand_base.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.7\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.7\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.253\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.203\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.167\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.130\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.78\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.20\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.19.10\",\n \"lessThanOrEqual\": \"6.19.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0\",\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:L/UI:N/S:U/C:N/I:H/A:H","score":7.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/28ea836cc44cb8b89c1c174707ead0c1133c60e9","https://git.kernel.org/stable/c/fe4a73c3dd48308149d57a10c2761e1d36ced7ba","https://git.kernel.org/stable/c/ce5229e78078e437704157eb542f43a6f83b429b","https://git.kernel.org/stable/c/a80291e577b44593a724d6cd64c14337c78f194d","https://git.kernel.org/stable/c/f71ce0ae5aefe39dd5b2f996c0e08550d2153ad2","https://git.kernel.org/stable/c/5fd5c078af23cb353507aa522e09d557d7eaef04","https://git.kernel.org/stable/c/f25446e2c28939753d3b62d34dfda49952b2557d","https://git.kernel.org/stable/c/bab2bc6e850a697a23b9e5f0e21bb8c187615e95"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23434","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-23434","identifiers":["CVE-2026-23434"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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