CVE-2025-37896 (GCVE-0-2025-37896)
Vulnerability from cvelistv5
Published
2025-05-20 15:21
Modified
2025-05-26 05:23
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: spi: spi-mem: Add fix to avoid divide error For some SPI flash memory operations, dummy bytes are not mandatory. For example, in Winbond SPINAND flash memory devices, the `write_cache` and `update_cache` operation variants have zero dummy bytes. Calculating the duration for SPI memory operations with zero dummy bytes causes a divide error when `ncycles` is calculated in the spi_mem_calc_op_duration(). Add changes to skip the 'ncylcles' calculation for zero dummy bytes. Following divide error is fixed by this change: Oops: divide error: 0000 [#1] PREEMPT SMP NOPTI ... ? do_trap+0xdb/0x100 ? do_error_trap+0x75/0xb0 ? spi_mem_calc_op_duration+0x56/0xb0 ? exc_divide_error+0x3b/0x70 ? spi_mem_calc_op_duration+0x56/0xb0 ? asm_exc_divide_error+0x1b/0x20 ? spi_mem_calc_op_duration+0x56/0xb0 ? spinand_select_op_variant+0xee/0x190 [spinand] spinand_match_and_init+0x13e/0x1a0 [spinand] spinand_manufacturer_match+0x6e/0xa0 [spinand] spinand_probe+0x357/0x7f0 [spinand] ? kernfs_activate+0x87/0xd0 spi_mem_probe+0x7a/0xb0 spi_probe+0x7d/0x130
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1915dbd67dadc0bb35670c8e28229baa29368d17
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8e4d3d8a5e51e07bd0d6cdd81b5e4af79f796927
Impacted products
Vendor Product Version
Linux Linux Version: 226d6cb3cb799aae46d0dd19a521133997d9db11
Version: 226d6cb3cb799aae46d0dd19a521133997d9db11
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   Linux Linux Version: 6.14
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/spi/spi-mem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1915dbd67dadc0bb35670c8e28229baa29368d17",
              "status": "affected",
              "version": "226d6cb3cb799aae46d0dd19a521133997d9db11",
              "versionType": "git"
            },
            {
              "lessThan": "8e4d3d8a5e51e07bd0d6cdd81b5e4af79f796927",
              "status": "affected",
              "version": "226d6cb3cb799aae46d0dd19a521133997d9db11",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/spi/spi-mem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14.6",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: spi-mem: Add fix to avoid divide error\n\nFor some SPI flash memory operations, dummy bytes are not mandatory. For\nexample, in Winbond SPINAND flash memory devices, the `write_cache` and\n`update_cache` operation variants have zero dummy bytes. Calculating the\nduration for SPI memory operations with zero dummy bytes causes\na divide error when `ncycles` is calculated in the\nspi_mem_calc_op_duration().\n\nAdd changes to skip the \u0027ncylcles\u0027 calculation for zero dummy bytes.\n\nFollowing divide error is fixed by this change:\n\n Oops: divide error: 0000 [#1] PREEMPT SMP NOPTI\n...\n\n  ? do_trap+0xdb/0x100\n  ? do_error_trap+0x75/0xb0\n  ? spi_mem_calc_op_duration+0x56/0xb0\n  ? exc_divide_error+0x3b/0x70\n  ? spi_mem_calc_op_duration+0x56/0xb0\n  ? asm_exc_divide_error+0x1b/0x20\n  ? spi_mem_calc_op_duration+0x56/0xb0\n  ? spinand_select_op_variant+0xee/0x190 [spinand]\n  spinand_match_and_init+0x13e/0x1a0 [spinand]\n  spinand_manufacturer_match+0x6e/0xa0 [spinand]\n  spinand_probe+0x357/0x7f0 [spinand]\n  ? kernfs_activate+0x87/0xd0\n  spi_mem_probe+0x7a/0xb0\n  spi_probe+0x7d/0x130"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-26T05:23:14.733Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1915dbd67dadc0bb35670c8e28229baa29368d17"
        },
        {
          "url": "https://git.kernel.org/stable/c/8e4d3d8a5e51e07bd0d6cdd81b5e4af79f796927"
        }
      ],
      "title": "spi: spi-mem: Add fix to avoid divide error",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-37896",
    "datePublished": "2025-05-20T15:21:32.685Z",
    "dateReserved": "2025-04-16T04:51:23.964Z",
    "dateUpdated": "2025-05-26T05:23:14.733Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-37896\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-20T16:15:25.960\",\"lastModified\":\"2025-05-21T20:25:16.407\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nspi: spi-mem: Add fix to avoid divide error\\n\\nFor some SPI flash memory operations, dummy bytes are not mandatory. For\\nexample, in Winbond SPINAND flash memory devices, the `write_cache` and\\n`update_cache` operation variants have zero dummy bytes. Calculating the\\nduration for SPI memory operations with zero dummy bytes causes\\na divide error when `ncycles` is calculated in the\\nspi_mem_calc_op_duration().\\n\\nAdd changes to skip the \u0027ncylcles\u0027 calculation for zero dummy bytes.\\n\\nFollowing divide error is fixed by this change:\\n\\n Oops: divide error: 0000 [#1] PREEMPT SMP NOPTI\\n...\\n\\n  ? do_trap+0xdb/0x100\\n  ? do_error_trap+0x75/0xb0\\n  ? spi_mem_calc_op_duration+0x56/0xb0\\n  ? exc_divide_error+0x3b/0x70\\n  ? spi_mem_calc_op_duration+0x56/0xb0\\n  ? asm_exc_divide_error+0x1b/0x20\\n  ? spi_mem_calc_op_duration+0x56/0xb0\\n  ? spinand_select_op_variant+0xee/0x190 [spinand]\\n  spinand_match_and_init+0x13e/0x1a0 [spinand]\\n  spinand_manufacturer_match+0x6e/0xa0 [spinand]\\n  spinand_probe+0x357/0x7f0 [spinand]\\n  ? kernfs_activate+0x87/0xd0\\n  spi_mem_probe+0x7a/0xb0\\n  spi_probe+0x7d/0x130\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1915dbd67dadc0bb35670c8e28229baa29368d17\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8e4d3d8a5e51e07bd0d6cdd81b5e4af79f796927\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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