CVE-2025-37896 (GCVE-0-2025-37896)
Vulnerability from cvelistv5 – Published: 2025-05-20 15:21 – Updated: 2025-05-26 05:23
VLAI?
Title
spi: spi-mem: Add fix to avoid divide error
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
Severity ?
No CVSS data available.
Assigner
References
Impacted products
{
"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"
}
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Sightings
| Author | Source | Type | Date |
|---|
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.
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