{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-46190", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.104Z", "datePublished": "2026-05-28T09:36:44.017Z", "dateUpdated": "2026-10-15T01:21:11.983Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:30:19.706Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: spi-nor: debugfs: fix out-of-bounds read in spi_nor_params_show()\n\nSashiko noticed an out-of-bounds read [1].\n\nIn spi_nor_params_show(), the snor_f_names array is passed to\nspi_nor_print_flags() using sizeof(snor_f_names).\n\nSince snor_f_names is an array of pointers, sizeof() returns the total\nnumber of bytes occupied by the pointers\n\t(element_count * sizeof(void *))\nrather than the element count itself. On 64-bit systems, this makes the\npassed length 8x larger than intended.\n\nInside spi_nor_print_flags(), the 'names_len' argument is used to\nbounds-check the 'names' array access. An out-of-bounds read occurs\nif a flag bit is set that exceeds the array's actual element count\nbut is within the inflated byte-size count.\n\nCorrect this by using ARRAY_SIZE() to pass the actual number of\nstring pointers in the array." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable code is a debugfs `params` file (mode 0444) under CONFIG_DEBUG_FS, reachable only by a local VFS read of /sys/kernel/debug/spi-nor//params; there is no network or physical path.\nAC:L - While the read itself is reliable, the OOB only manifests if a flag bit ≥17 is set in nor->flags; per the directive to consider the most severe reasonable case and resolve uncertainty toward higher severity, the read is treated as reliably performable.\nPR:L - The file is created world-readable (0444), and on reasonable embedded/dev SPI-NOR deployments where debugfs is mounted and traversable by non-root, an unprivileged local user can read it.\nUI:N - Exploitation only requires the attacker to read the debugfs file; no victim action is needed.\nS:U - The defect is confined to the kernel's own memory and security authority with no crossing of a trust boundary such as VM or IOMMU.\nC:H - An out-of-bounds read that, when triggered, makes seq_puts() dereference an adjacent-memory-derived pointer and emit a kernel string into readable output — not strictly bounded to a few bytes.\nI:N - The operation is purely a read path emitting to a seq_file; it provides no memory-write or control-flow primitive.\nA:H - If the out-of-array slot holds a non-NULL invalid pointer, seq_puts() dereferences a wild pointer, which can oops/crash the kernel." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/mtd/spi-nor/debugfs.c" ], "versions": [ { "version": "0257be79fc4a16a3252ce80aa13b3640f728c425", "lessThan": "231b8e1f604f6e0a7e100536f506cdf482e2c5f5", "status": "affected", "versionType": "git" }, { "version": "0257be79fc4a16a3252ce80aa13b3640f728c425", "lessThan": "9a80c458320e0514e11945402dd6e48fcee05524", "status": "affected", "versionType": "git" }, { "version": "0257be79fc4a16a3252ce80aa13b3640f728c425", "lessThan": "ca18c180b053f6ce80394322b314ac721c316af7", "status": "affected", "versionType": "git" }, { "version": "0257be79fc4a16a3252ce80aa13b3640f728c425", "lessThan": "34bdcfb496b29f9a52431194f94473b37fb8c162", "status": "affected", "versionType": "git" }, { "version": "0257be79fc4a16a3252ce80aa13b3640f728c425", "lessThan": "c0b654bc0b76a1da102d9138be1ed1223bd99310", "status": "affected", "versionType": "git" }, { "version": "0257be79fc4a16a3252ce80aa13b3640f728c425", "lessThan": "e47029b977e747cb3a9174308fd55762cce70147", "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/spi-nor/debugfs.c" ], "versions": [ { "version": "5.19", "status": "affected" }, { "version": "0", "lessThan": "5.19", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.140", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.88", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.30", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0.7", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1", "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": "5.19", "versionEndExcluding": "6.1.176" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.6.140" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.12.88" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.18.30" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "7.0.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "7.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/231b8e1f604f6e0a7e100536f506cdf482e2c5f5" }, { "url": "https://git.kernel.org/stable/c/9a80c458320e0514e11945402dd6e48fcee05524" }, { "url": "https://git.kernel.org/stable/c/ca18c180b053f6ce80394322b314ac721c316af7" }, { "url": "https://git.kernel.org/stable/c/34bdcfb496b29f9a52431194f94473b37fb8c162" }, { "url": "https://git.kernel.org/stable/c/c0b654bc0b76a1da102d9138be1ed1223bd99310" }, { "url": "https://git.kernel.org/stable/c/e47029b977e747cb3a9174308fd55762cce70147" } ], "title": "mtd: spi-nor: debugfs: fix out-of-bounds read in spi_nor_params_show()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "x_adpType": "supplier", "providerMetadata": { "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-10-15T01:21:11.983Z" }, "affected": [ { "vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "versions": [ { "status": "affected", "version": "0", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" } ], "references": [ { "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html" } ] } ] } }