CVE-2025-21845 (GCVE-0-2025-21845)

Vulnerability from cvelistv5 – Published: 2025-03-12 09:42 – Updated: 2026-06-01 16:05
VLAI
Title
mtd: spi-nor: sst: Fix SST write failure
Summary
In the Linux kernel, the following vulnerability has been resolved: mtd: spi-nor: sst: Fix SST write failure 'commit 18bcb4aa54ea ("mtd: spi-nor: sst: Factor out common write operation to `sst_nor_write_data()`")' introduced a bug where only one byte of data is written, regardless of the number of bytes passed to sst_nor_write_data(), causing a kernel crash during the write operation. Ensure the correct number of bytes are written as passed to sst_nor_write_data(). Call trace: [ 57.400180] ------------[ cut here ]------------ [ 57.404842] While writing 2 byte written 1 bytes [ 57.409493] WARNING: CPU: 0 PID: 737 at drivers/mtd/spi-nor/sst.c:187 sst_nor_write_data+0x6c/0x74 [ 57.418464] Modules linked in: [ 57.421517] CPU: 0 UID: 0 PID: 737 Comm: mtd_debug Not tainted 6.12.0-g5ad04afd91f9 #30 [ 57.429517] Hardware name: Xilinx Versal A2197 Processor board revA - x-prc-02 revA (DT) [ 57.437600] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 57.444557] pc : sst_nor_write_data+0x6c/0x74 [ 57.448911] lr : sst_nor_write_data+0x6c/0x74 [ 57.453264] sp : ffff80008232bb40 [ 57.456570] x29: ffff80008232bb40 x28: 0000000000010000 x27: 0000000000000001 [ 57.463708] x26: 000000000000ffff x25: 0000000000000000 x24: 0000000000000000 [ 57.470843] x23: 0000000000010000 x22: ffff80008232bbf0 x21: ffff000816230000 [ 57.477978] x20: ffff0008056c0080 x19: 0000000000000002 x18: 0000000000000006 [ 57.485112] x17: 0000000000000000 x16: 0000000000000000 x15: ffff80008232b580 [ 57.492246] x14: 0000000000000000 x13: ffff8000816d1530 x12: 00000000000004a4 [ 57.499380] x11: 000000000000018c x10: ffff8000816fd530 x9 : ffff8000816d1530 [ 57.506515] x8 : 00000000fffff7ff x7 : ffff8000816fd530 x6 : 0000000000000001 [ 57.513649] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000 [ 57.520782] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0008049b0000 [ 57.527916] Call trace: [ 57.530354] sst_nor_write_data+0x6c/0x74 [ 57.534361] sst_nor_write+0xb4/0x18c [ 57.538019] mtd_write_oob_std+0x7c/0x88 [ 57.541941] mtd_write_oob+0x70/0xbc [ 57.545511] mtd_write+0x68/0xa8 [ 57.548733] mtdchar_write+0x10c/0x290 [ 57.552477] vfs_write+0xb4/0x3a8 [ 57.555791] ksys_write+0x74/0x10c [ 57.559189] __arm64_sys_write+0x1c/0x28 [ 57.563109] invoke_syscall+0x54/0x11c [ 57.566856] el0_svc_common.constprop.0+0xc0/0xe0 [ 57.571557] do_el0_svc+0x1c/0x28 [ 57.574868] el0_svc+0x30/0xcc [ 57.577921] el0t_64_sync_handler+0x120/0x12c [ 57.582276] el0t_64_sync+0x190/0x194 [ 57.585933] ---[ end trace 0000000000000000 ]--- [pratyush@kernel.org: add Cc stable tag]
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b925a5787b6e1d05731eb2dcc31dcaafc40ec2b6 , < f791837015a0d20f584d0ed368393f119a00018f (git)
Affected: b7cd63d13faef7ca5cf31ffa45ebf08829e4c9a7 , < f7c14993dc2f1eca661975c0ff90a6e2098ecd41 (git)
Affected: 18bcb4aa54eab75dce41e5c176a1c2bff94f0f79 , < bb1accc7e0f688886f0c634f2e878b8ac4ee6a58 (git)
Affected: 18bcb4aa54eab75dce41e5c176a1c2bff94f0f79 , < 9553391f32f8c43e12fc7c04e1035160b5ea20bf (git)
Affected: 18bcb4aa54eab75dce41e5c176a1c2bff94f0f79 , < 539bd20352832b9244238a055eb169ccf1c41ff6 (git)
Create a notification for this product.
Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.12.17 , ≤ 6.12.* (semver)
Unaffected: 6.13.5 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
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              "content": {
                "id": "CVE-2025-21845",
                "options": [
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                    "Exploitation": "none"
                  },
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                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T19:26:37.579214Z",
                "version": "2.0.3"
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          "dateUpdated": "2025-10-01T19:36:34.588Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/mtd/spi-nor/sst.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "status": "affected",
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              "status": "affected",
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              "versionType": "git"
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          "programFiles": [
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.17",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13.5",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: spi-nor: sst: Fix SST write failure\n\n\u0027commit 18bcb4aa54ea (\"mtd: spi-nor: sst: Factor out common write operation\nto `sst_nor_write_data()`\")\u0027 introduced a bug where only one byte of data\nis written, regardless of the number of bytes passed to\nsst_nor_write_data(), causing a kernel crash during the write operation.\nEnsure the correct number of bytes are written as passed to\nsst_nor_write_data().\n\nCall trace:\n[   57.400180] ------------[ cut here ]------------\n[   57.404842] While writing 2 byte written 1 bytes\n[   57.409493] WARNING: CPU: 0 PID: 737 at drivers/mtd/spi-nor/sst.c:187 sst_nor_write_data+0x6c/0x74\n[   57.418464] Modules linked in:\n[   57.421517] CPU: 0 UID: 0 PID: 737 Comm: mtd_debug Not tainted 6.12.0-g5ad04afd91f9 #30\n[   57.429517] Hardware name: Xilinx Versal A2197 Processor board revA - x-prc-02 revA (DT)\n[   57.437600] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[   57.444557] pc : sst_nor_write_data+0x6c/0x74\n[   57.448911] lr : sst_nor_write_data+0x6c/0x74\n[   57.453264] sp : ffff80008232bb40\n[   57.456570] x29: ffff80008232bb40 x28: 0000000000010000 x27: 0000000000000001\n[   57.463708] x26: 000000000000ffff x25: 0000000000000000 x24: 0000000000000000\n[   57.470843] x23: 0000000000010000 x22: ffff80008232bbf0 x21: ffff000816230000\n[   57.477978] x20: ffff0008056c0080 x19: 0000000000000002 x18: 0000000000000006\n[   57.485112] x17: 0000000000000000 x16: 0000000000000000 x15: ffff80008232b580\n[   57.492246] x14: 0000000000000000 x13: ffff8000816d1530 x12: 00000000000004a4\n[   57.499380] x11: 000000000000018c x10: ffff8000816fd530 x9 : ffff8000816d1530\n[   57.506515] x8 : 00000000fffff7ff x7 : ffff8000816fd530 x6 : 0000000000000001\n[   57.513649] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000\n[   57.520782] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0008049b0000\n[   57.527916] Call trace:\n[   57.530354]  sst_nor_write_data+0x6c/0x74\n[   57.534361]  sst_nor_write+0xb4/0x18c\n[   57.538019]  mtd_write_oob_std+0x7c/0x88\n[   57.541941]  mtd_write_oob+0x70/0xbc\n[   57.545511]  mtd_write+0x68/0xa8\n[   57.548733]  mtdchar_write+0x10c/0x290\n[   57.552477]  vfs_write+0xb4/0x3a8\n[   57.555791]  ksys_write+0x74/0x10c\n[   57.559189]  __arm64_sys_write+0x1c/0x28\n[   57.563109]  invoke_syscall+0x54/0x11c\n[   57.566856]  el0_svc_common.constprop.0+0xc0/0xe0\n[   57.571557]  do_el0_svc+0x1c/0x28\n[   57.574868]  el0_svc+0x30/0xcc\n[   57.577921]  el0t_64_sync_handler+0x120/0x12c\n[   57.582276]  el0t_64_sync+0x190/0x194\n[   57.585933] ---[ end trace 0000000000000000 ]---\n\n[pratyush@kernel.org: add Cc stable tag]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-01T16:05:02.903Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f791837015a0d20f584d0ed368393f119a00018f"
        },
        {
          "url": "https://git.kernel.org/stable/c/f7c14993dc2f1eca661975c0ff90a6e2098ecd41"
        },
        {
          "url": "https://git.kernel.org/stable/c/bb1accc7e0f688886f0c634f2e878b8ac4ee6a58"
        },
        {
          "url": "https://git.kernel.org/stable/c/9553391f32f8c43e12fc7c04e1035160b5ea20bf"
        },
        {
          "url": "https://git.kernel.org/stable/c/539bd20352832b9244238a055eb169ccf1c41ff6"
        }
      ],
      "title": "mtd: spi-nor: sst: Fix SST write failure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21845",
    "datePublished": "2025-03-12T09:42:01.252Z",
    "dateReserved": "2024-12-29T08:45:45.778Z",
    "dateUpdated": "2026-06-01T16:05:02.903Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-21845",
      "date": "2026-07-24",
      "epss": "0.00245",
      "percentile": "0.15757"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-21845\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-03-12T10:15:16.820\",\"lastModified\":\"2026-06-17T08:44:25.583\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmtd: spi-nor: sst: Fix SST write failure\\n\\n\u0027commit 18bcb4aa54ea (\\\"mtd: spi-nor: sst: Factor out common write operation\\nto `sst_nor_write_data()`\\\")\u0027 introduced a bug where only one byte of data\\nis written, regardless of the number of bytes passed to\\nsst_nor_write_data(), causing a kernel crash during the write operation.\\nEnsure the correct number of bytes are written as passed to\\nsst_nor_write_data().\\n\\nCall trace:\\n[   57.400180] ------------[ cut here ]------------\\n[   57.404842] While writing 2 byte written 1 bytes\\n[   57.409493] WARNING: CPU: 0 PID: 737 at drivers/mtd/spi-nor/sst.c:187 sst_nor_write_data+0x6c/0x74\\n[   57.418464] Modules linked in:\\n[   57.421517] CPU: 0 UID: 0 PID: 737 Comm: mtd_debug Not tainted 6.12.0-g5ad04afd91f9 #30\\n[   57.429517] Hardware name: Xilinx Versal A2197 Processor board revA - x-prc-02 revA (DT)\\n[   57.437600] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\n[   57.444557] pc : sst_nor_write_data+0x6c/0x74\\n[   57.448911] lr : sst_nor_write_data+0x6c/0x74\\n[   57.453264] sp : ffff80008232bb40\\n[   57.456570] x29: ffff80008232bb40 x28: 0000000000010000 x27: 0000000000000001\\n[   57.463708] x26: 000000000000ffff x25: 0000000000000000 x24: 0000000000000000\\n[   57.470843] x23: 0000000000010000 x22: ffff80008232bbf0 x21: ffff000816230000\\n[   57.477978] x20: ffff0008056c0080 x19: 0000000000000002 x18: 0000000000000006\\n[   57.485112] x17: 0000000000000000 x16: 0000000000000000 x15: ffff80008232b580\\n[   57.492246] x14: 0000000000000000 x13: ffff8000816d1530 x12: 00000000000004a4\\n[   57.499380] x11: 000000000000018c x10: ffff8000816fd530 x9 : ffff8000816d1530\\n[   57.506515] x8 : 00000000fffff7ff x7 : ffff8000816fd530 x6 : 0000000000000001\\n[   57.513649] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000\\n[   57.520782] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0008049b0000\\n[   57.527916] Call trace:\\n[   57.530354]  sst_nor_write_data+0x6c/0x74\\n[   57.534361]  sst_nor_write+0xb4/0x18c\\n[   57.538019]  mtd_write_oob_std+0x7c/0x88\\n[   57.541941]  mtd_write_oob+0x70/0xbc\\n[   57.545511]  mtd_write+0x68/0xa8\\n[   57.548733]  mtdchar_write+0x10c/0x290\\n[   57.552477]  vfs_write+0xb4/0x3a8\\n[   57.555791]  ksys_write+0x74/0x10c\\n[   57.559189]  __arm64_sys_write+0x1c/0x28\\n[   57.563109]  invoke_syscall+0x54/0x11c\\n[   57.566856]  el0_svc_common.constprop.0+0xc0/0xe0\\n[   57.571557]  do_el0_svc+0x1c/0x28\\n[   57.574868]  el0_svc+0x30/0xcc\\n[   57.577921]  el0t_64_sync_handler+0x120/0x12c\\n[   57.582276]  el0t_64_sync+0x190/0x194\\n[   57.585933] ---[ end trace 0000000000000000 ]---\\n\\n[pratyush@kernel.org: add Cc stable tag]\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mtd: spi-nor: sst: Se corrige el error de escritura en SST \u00abcommit 18bcb4aa54ea (\\\"mtd: spi-nor: sst: Factorizar la operaci\u00f3n de escritura com\u00fan a `sst_nor_write_data()`\\\")\u00bb, que introdujo un error donde solo se escribe un byte de datos, independientemente del n\u00famero de bytes pasados a sst_nor_write_data(), lo que provoca un fallo del kernel durante la operaci\u00f3n de escritura. Aseg\u00farese de que se escriba el n\u00famero correcto de bytes al pasar a sst_nor_write_data(). Rastreo de llamada: [ 57.400180] ------------[ cortar aqu\u00ed ]------------ [ 57.404842] Mientras se escrib\u00edan 2 bytes, se escribi\u00f3 1 byte [ 57.409493] ADVERTENCIA: CPU: 0 PID: 737 at drivers/mtd/spi-nor/sst.c:187 sst_nor_write_data+0x6c/0x74 [ 57.418464] Modules linked in: [ 57.421517] CPU: 0 UID: 0 PID: 737 Comm: mtd_debug Not tainted 6.12.0-g5ad04afd91f9 #30 [ 57.429517] Hardware name: Xilinx Versal A2197 Processor board revA - x-prc-02 revA (DT) [ 57.437600] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 57.444557] pc : sst_nor_write_data+0x6c/0x74 [ 57.448911] lr : sst_nor_write_data+0x6c/0x74 [ 57.453264] sp : ffff80008232bb40 [ 57.456570] x29: ffff80008232bb40 x28: 0000000000010000 x27: 0000000000000001 [ 57.463708] x26: 000000000000ffff x25: 0000000000000000 x24: 0000000000000000 [ 57.470843] x23: 0000000000010000 x22: ffff80008232bbf0 x21: ffff000816230000 [ 57.477978] x20: ffff0008056c0080 x19: 0000000000000002 x18: 0000000000000006 [ 57.485112] x17: 0000000000000000 x16: 0000000000000000 x15: ffff80008232b580 [ 57.492246] x14: 0000000000000000 x13: ffff8000816d1530 x12: 00000000000004a4 [ 57.499380] x11: 000000000000018c x10: ffff8000816fd530 x9 : ffff8000816d1530 [ 57.506515] x8 : 00000000fffff7ff x7 : ffff8000816fd530 x6 : 0000000000000001 [ 57.513649] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000 [ 57.520782] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0008049b0000 [ 57.527916] Call trace: [ 57.530354] sst_nor_write_data+0x6c/0x74 [ 57.534361] sst_nor_write+0xb4/0x18c [ 57.538019] mtd_write_oob_std+0x7c/0x88 [ 57.541941] mtd_write_oob+0x70/0xbc [ 57.545511] mtd_write+0x68/0xa8 [ 57.548733] mtdchar_write+0x10c/0x290 [ 57.552477] vfs_write+0xb4/0x3a8 [ 57.555791] ksys_write+0x74/0x10c [ 57.559189] __arm64_sys_write+0x1c/0x28 [ 57.563109] invoke_syscall+0x54/0x11c [ 57.566856] el0_svc_common.constprop.0+0xc0/0xe0 [ 57.571557] do_el0_svc+0x1c/0x28 [ 57.574868] el0_svc+0x30/0xcc [ 57.577921] el0t_64_sync_handler+0x120/0x12c [ 57.582276] el0t_64_sync+0x190/0x194 [ 57.585933] ---[ end trace 0000000000000000 ]--- [pratyush@kernel.org: add Cc stable tag] \"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/mtd/spi-nor/sst.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"b925a5787b6e1d05731eb2dcc31dcaafc40ec2b6\",\"lessThan\":\"f791837015a0d20f584d0ed368393f119a00018f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b7cd63d13faef7ca5cf31ffa45ebf08829e4c9a7\",\"lessThan\":\"f7c14993dc2f1eca661975c0ff90a6e2098ecd41\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"18bcb4aa54eab75dce41e5c176a1c2bff94f0f79\",\"lessThan\":\"bb1accc7e0f688886f0c634f2e878b8ac4ee6a58\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"18bcb4aa54eab75dce41e5c176a1c2bff94f0f79\",\"lessThan\":\"9553391f32f8c43e12fc7c04e1035160b5ea20bf\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"18bcb4aa54eab75dce41e5c176a1c2bff94f0f79\",\"lessThan\":\"539bd20352832b9244238a055eb169ccf1c41ff6\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/mtd/spi-nor/sst.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.12\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.12\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.17\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.13.5\",\"lessThanOrEqual\":\"6.13.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.14\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-10-01T19:26:37.579214Z\",\"id\":\"CVE-2025-21845\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.12\",\"versionEndExcluding\":\"6.12.17\",\"matchCriteriaId\":\"D7CFE07B-B159-42C9-8FE6-76AF2E647681\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.13.5\",\"matchCriteriaId\":\"72E69ABB-9015-43A6-87E1-5150383CFFD9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"186716B6-2B66-4BD0-852E-D48E71C0C85F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"0D3E781C-403A-498F-9DA9-ECEE50F41E75\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"66619FB8-0AAF-4166-B2CF-67B24143261D\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/539bd20352832b9244238a055eb169ccf1c41ff6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9553391f32f8c43e12fc7c04e1035160b5ea20bf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/bb1accc7e0f688886f0c634f2e878b8ac4ee6a58\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f791837015a0d20f584d0ed368393f119a00018f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f7c14993dc2f1eca661975c0ff90a6e2098ecd41\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T00:00:59+00:00",
      "cve": "CVE-2025-21845",
      "id": "CVE-2025-21845",
      "initial_release_date": "2025-03-12T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mtd: spi-nor: sst: Fix SST write failure",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-21845.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-21845\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T19:26:37.579214Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T16:58:03.479Z\"}}], \"cna\": {\"title\": \"mtd: spi-nor: sst: Fix SST write failure\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"b925a5787b6e1d05731eb2dcc31dcaafc40ec2b6\", \"lessThan\": \"f791837015a0d20f584d0ed368393f119a00018f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b7cd63d13faef7ca5cf31ffa45ebf08829e4c9a7\", \"lessThan\": \"f7c14993dc2f1eca661975c0ff90a6e2098ecd41\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"18bcb4aa54eab75dce41e5c176a1c2bff94f0f79\", \"lessThan\": \"bb1accc7e0f688886f0c634f2e878b8ac4ee6a58\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"18bcb4aa54eab75dce41e5c176a1c2bff94f0f79\", \"lessThan\": \"9553391f32f8c43e12fc7c04e1035160b5ea20bf\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"18bcb4aa54eab75dce41e5c176a1c2bff94f0f79\", \"lessThan\": \"539bd20352832b9244238a055eb169ccf1c41ff6\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/mtd/spi-nor/sst.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.12\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.12.17\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.13.*\"}, {\"status\": \"unaffected\", \"version\": \"6.14\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/mtd/spi-nor/sst.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f791837015a0d20f584d0ed368393f119a00018f\"}, {\"url\": \"https://git.kernel.org/stable/c/f7c14993dc2f1eca661975c0ff90a6e2098ecd41\"}, {\"url\": \"https://git.kernel.org/stable/c/bb1accc7e0f688886f0c634f2e878b8ac4ee6a58\"}, {\"url\": \"https://git.kernel.org/stable/c/9553391f32f8c43e12fc7c04e1035160b5ea20bf\"}, {\"url\": \"https://git.kernel.org/stable/c/539bd20352832b9244238a055eb169ccf1c41ff6\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmtd: spi-nor: sst: Fix SST write failure\\n\\n\u0027commit 18bcb4aa54ea (\\\"mtd: spi-nor: sst: Factor out common write operation\\nto `sst_nor_write_data()`\\\")\u0027 introduced a bug where only one byte of data\\nis written, regardless of the number of bytes passed to\\nsst_nor_write_data(), causing a kernel crash during the write operation.\\nEnsure the correct number of bytes are written as passed to\\nsst_nor_write_data().\\n\\nCall trace:\\n[   57.400180] ------------[ cut here ]------------\\n[   57.404842] While writing 2 byte written 1 bytes\\n[   57.409493] WARNING: CPU: 0 PID: 737 at drivers/mtd/spi-nor/sst.c:187 sst_nor_write_data+0x6c/0x74\\n[   57.418464] Modules linked in:\\n[   57.421517] CPU: 0 UID: 0 PID: 737 Comm: mtd_debug Not tainted 6.12.0-g5ad04afd91f9 #30\\n[   57.429517] Hardware name: Xilinx Versal A2197 Processor board revA - x-prc-02 revA (DT)\\n[   57.437600] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\n[   57.444557] pc : sst_nor_write_data+0x6c/0x74\\n[   57.448911] lr : sst_nor_write_data+0x6c/0x74\\n[   57.453264] sp : ffff80008232bb40\\n[   57.456570] x29: ffff80008232bb40 x28: 0000000000010000 x27: 0000000000000001\\n[   57.463708] x26: 000000000000ffff x25: 0000000000000000 x24: 0000000000000000\\n[   57.470843] x23: 0000000000010000 x22: ffff80008232bbf0 x21: ffff000816230000\\n[   57.477978] x20: ffff0008056c0080 x19: 0000000000000002 x18: 0000000000000006\\n[   57.485112] x17: 0000000000000000 x16: 0000000000000000 x15: ffff80008232b580\\n[   57.492246] x14: 0000000000000000 x13: ffff8000816d1530 x12: 00000000000004a4\\n[   57.499380] x11: 000000000000018c x10: ffff8000816fd530 x9 : ffff8000816d1530\\n[   57.506515] x8 : 00000000fffff7ff x7 : ffff8000816fd530 x6 : 0000000000000001\\n[   57.513649] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000\\n[   57.520782] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0008049b0000\\n[   57.527916] Call trace:\\n[   57.530354]  sst_nor_write_data+0x6c/0x74\\n[   57.534361]  sst_nor_write+0xb4/0x18c\\n[   57.538019]  mtd_write_oob_std+0x7c/0x88\\n[   57.541941]  mtd_write_oob+0x70/0xbc\\n[   57.545511]  mtd_write+0x68/0xa8\\n[   57.548733]  mtdchar_write+0x10c/0x290\\n[   57.552477]  vfs_write+0xb4/0x3a8\\n[   57.555791]  ksys_write+0x74/0x10c\\n[   57.559189]  __arm64_sys_write+0x1c/0x28\\n[   57.563109]  invoke_syscall+0x54/0x11c\\n[   57.566856]  el0_svc_common.constprop.0+0xc0/0xe0\\n[   57.571557]  do_el0_svc+0x1c/0x28\\n[   57.574868]  el0_svc+0x30/0xcc\\n[   57.577921]  el0t_64_sync_handler+0x120/0x12c\\n[   57.582276]  el0t_64_sync+0x190/0x194\\n[   57.585933] ---[ end trace 0000000000000000 ]---\\n\\n[pratyush@kernel.org: add Cc stable tag]\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.17\", \"versionStartIncluding\": \"6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13.5\", \"versionStartIncluding\": \"6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.14\", \"versionStartIncluding\": \"6.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-06-01T16:05:02.903Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-21845\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-01T16:05:02.903Z\", \"dateReserved\": \"2024-12-29T08:45:45.778Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-03-12T09:42:01.252Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.