248 lines
12 KiB
JSON
248 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-68478",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-07-30T09:28:09.397Z",
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"datePublished": "2026-08-15T05:51:33.441Z",
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"dateUpdated": "2026-08-17T05:06:21.136Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-17T05:06:21.136Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmemstick: ms_block: reject a card that reports too many blocks\n\nmsb_ftl_initialize() computes the zone count from the card block count\nwith no bound:\n\n\tmsb->zone_count = msb->block_count / MS_BLOCKS_IN_ZONE;\n\t...\n\tfor (i = 0; i < msb->zone_count; i++)\n\t\tmsb->free_block_count[i] = MS_BLOCKS_IN_ZONE;\n\nmsb->block_count is a card value. msb_read_boot_blocks() reads\nnumber_of_blocks from the card boot page and byte swaps it.\nfree_block_count is a fixed int[MS_MAX_ZONES]. MS_MAX_ZONES is 16, so the\nvalid indices are 0 to 15. The init loop above indexes it by zone_count.\nmsb_mark_block_used() and msb_mark_block_unused() index it by\npba / MS_BLOCKS_IN_ZONE, for pba up to block_count - 1. A card may report\nup to 65535 blocks. A block_count above 8192 (MS_MAX_ZONES *\nMS_BLOCKS_IN_ZONE) lets the pba index reach 16. That writes past\nfree_block_count[] and corrupts struct msb_data. A larger count runs the\ninit loop past the end too.\n\nA real Memory Stick has at most 16 zones. So it has at most 8192 blocks.\nmsb_ftl_initialize() now rejects a card that reports more than\nMS_MAX_ZONES * MS_BLOCKS_IN_ZONE blocks."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/memstick/core/ms_block.c"
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],
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"versions": [
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{
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"version": "0ab30494bc4f3bc1ea4659b7c5d97c5218554a63",
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"lessThan": "a4b9961efe8640f50800811b4a2b2046b3dc2ccc",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "0ab30494bc4f3bc1ea4659b7c5d97c5218554a63",
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"lessThan": "8937b11f1c3896e066c3fb07387ba17bc8c50b8a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "0ab30494bc4f3bc1ea4659b7c5d97c5218554a63",
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"lessThan": "f1c675ecf6e5ad02722f0019f729d8bb588d502e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "0ab30494bc4f3bc1ea4659b7c5d97c5218554a63",
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"lessThan": "d5db3439ee8d1c165a09a47e984c4ba508c130df",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "0ab30494bc4f3bc1ea4659b7c5d97c5218554a63",
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"lessThan": "b86666ac4009a252501cc17242582a7ec9ed976e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "0ab30494bc4f3bc1ea4659b7c5d97c5218554a63",
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"lessThan": "39151f0708c84221e94cdd6aa070aba5d7cb1c01",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "0ab30494bc4f3bc1ea4659b7c5d97c5218554a63",
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"lessThan": "47f0c7d856c67c9935546d2644f18c0d0131b449",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "0ab30494bc4f3bc1ea4659b7c5d97c5218554a63",
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"lessThan": "718178f524b98bc920d74bc771aed823c8b81425",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/memstick/core/ms_block.c"
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],
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"versions": [
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{
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"version": "3.12",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "3.12",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.261",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.212",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.178",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.145",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.97",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.40",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.5",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.12",
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"versionEndExcluding": "5.10.261"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.12",
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"versionEndExcluding": "5.15.212"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.12",
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"versionEndExcluding": "6.1.178"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.12",
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"versionEndExcluding": "6.6.145"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.12",
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"versionEndExcluding": "6.12.97"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.12",
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"versionEndExcluding": "6.18.40"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.12",
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"versionEndExcluding": "7.1.5"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.12",
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"versionEndExcluding": "7.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/a4b9961efe8640f50800811b4a2b2046b3dc2ccc"
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},
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{
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"url": "https://git.kernel.org/stable/c/8937b11f1c3896e066c3fb07387ba17bc8c50b8a"
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},
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{
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"url": "https://git.kernel.org/stable/c/f1c675ecf6e5ad02722f0019f729d8bb588d502e"
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},
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{
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"url": "https://git.kernel.org/stable/c/d5db3439ee8d1c165a09a47e984c4ba508c130df"
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},
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{
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"url": "https://git.kernel.org/stable/c/b86666ac4009a252501cc17242582a7ec9ed976e"
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},
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{
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"url": "https://git.kernel.org/stable/c/39151f0708c84221e94cdd6aa070aba5d7cb1c01"
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},
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{
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"url": "https://git.kernel.org/stable/c/47f0c7d856c67c9935546d2644f18c0d0131b449"
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},
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{
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"url": "https://git.kernel.org/stable/c/718178f524b98bc920d74bc771aed823c8b81425"
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}
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],
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"title": "memstick: ms_block: reject a card that reports too many blocks",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |