{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-72165", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.909Z", "datePublished": "2026-08-15T05:53:32.649Z", "dateUpdated": "2026-08-17T05:41:07.143Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:41:07.143Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: rawnand: fix condition in 'nand_select_target()'\n\n'cs' here must be in range [0:nanddev_ntargets[." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The flaw is in the raw NAND MTD stack reached via local /dev/mtdX character-device ioctls (MEMREAD, MEMWRITE, MEMERASE, MEMSETBADBLOCK) and mtdblock I/O, not via network protocols or physical hotplug alone.\nAC:L - An attacker with MTD device access can repeatedly issue read, write, or erase operations on multi-die NAND hardware; when a caller supplies cs equal to nanddev_ntargets(), the defective check passes deterministically and invokes the controller select_chip path.\nPR:L - Exploitation requires local write access to the MTD character device (FMODE_WRITE on /dev/mtdX) but no capability() gate beyond device permissions; per kernel CNA guidance, PR:L is chosen when uncertain between device-permission low and root-only high privilege.\nUI:N - No separate victim interaction is required; once the attacker has access to the MTD device node they can trigger the vulnerable nand_select_target() path through their own ioctl or read/write requests.\nS:U - Impact remains within the kernel and on-board NAND controller security authority on the host; it does not cross VM, container, IOMMU, or other security-boundary scopes into a separate authority.\nC:H - When cs equals nanddev_ntargets() the invalid index reaches controller select_chip handlers (denali, mtk, rockchip, renesas) that index sels[cs] without bounds checking, enabling out-of-bounds kernel memory reads.\nI:H - Out-of-bounds sels[cs] values are written into NAND controller CE-select and timing registers, plausibly corrupting flash contents or protection state; under the required uncertainty rule this memory-safety defect is scored as high integrity impact.\nA:H - On legacy/default select_chip paths an out-of-range cs hits BUG(), and controller misconfiguration from invalid CE selection can oops or hang the kernel, satisfying high availability impact for kernel crash classes." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/mtd/nand/raw/nand_base.c" ], "versions": [ { "version": "32813e288414fecce18f37f8f0d0414a64b45c56", "lessThan": "483a8a8581ee1274ec70e2561492096d4a7305e6", "status": "affected", "versionType": "git" }, { "version": "32813e288414fecce18f37f8f0d0414a64b45c56", "lessThan": "c2a131fb6882c98aada739479cc96df8748d0c24", "status": "affected", "versionType": "git" }, { "version": "32813e288414fecce18f37f8f0d0414a64b45c56", "lessThan": "e6df4fea1dc86c058e1918136c9b9d8e80c4be1b", "status": "affected", "versionType": "git" }, { "version": "32813e288414fecce18f37f8f0d0414a64b45c56", "lessThan": "3da4eb15c7b421c2d97c402bb7bd607c44822995", "status": "affected", "versionType": "git" }, { "version": "32813e288414fecce18f37f8f0d0414a64b45c56", "lessThan": "fbc7c8a1167b2eb56b2fd8598c29a3d5e9f8676e", "status": "affected", "versionType": "git" }, { "version": "32813e288414fecce18f37f8f0d0414a64b45c56", "lessThan": "4bbfcf9c7e46cae58257150bf834853559382e28", "status": "affected", "versionType": "git" }, { "version": "32813e288414fecce18f37f8f0d0414a64b45c56", "lessThan": "8f575fc17360827ca1d1940a84f3c7ee40407a10", "status": "affected", "versionType": "git" }, { "version": "32813e288414fecce18f37f8f0d0414a64b45c56", "lessThan": "8507c2cc9e4fa402401819f44d1e8a5ef4d11d8b", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/mtd/nand/raw/nand_base.c" ], "versions": [ { "version": "5.2", "status": "affected" }, { "version": "0", "lessThan": "5.2", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "5.10.261" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "5.15.212" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.1.178" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.6.145" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.12.97" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.18.40" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "7.1.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/483a8a8581ee1274ec70e2561492096d4a7305e6" }, { "url": "https://git.kernel.org/stable/c/c2a131fb6882c98aada739479cc96df8748d0c24" }, { "url": "https://git.kernel.org/stable/c/e6df4fea1dc86c058e1918136c9b9d8e80c4be1b" }, { "url": "https://git.kernel.org/stable/c/3da4eb15c7b421c2d97c402bb7bd607c44822995" }, { "url": "https://git.kernel.org/stable/c/fbc7c8a1167b2eb56b2fd8598c29a3d5e9f8676e" }, { "url": "https://git.kernel.org/stable/c/4bbfcf9c7e46cae58257150bf834853559382e28" }, { "url": "https://git.kernel.org/stable/c/8f575fc17360827ca1d1940a84f3c7ee40407a10" }, { "url": "https://git.kernel.org/stable/c/8507c2cc9e4fa402401819f44d1e8a5ef4d11d8b" } ], "title": "mtd: rawnand: fix condition in 'nand_select_target()'", "x_generator": { "engine": "bippy-1.2.0" } } } }