CVE-2026-10679
- Source
- https://cve.org/CVERecord?id=CVE-2026-10679
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10679.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-10679
- Aliases
-
- GHSA-3qcm-qwh2-v4hq
- Published
- 2026-07-21T21:30:55Z
- Modified
- 2026-11-05T08:04:07Z
- Severity
-
- 3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
- Summary
- Divide-by-zero in DesignWare SPI driver reachable from spi_transceive syscall (local DoS)
- Details
-
The DesignWare SPI driver (drivers/spi/spi_dw.c) computed the SPI BAUDR clock divider as info->clock_frequency / config->frequency without validating config->frequency.
spi_transceive is a Zephyr __syscall and its verify handler (drivers/spi/spi_handlers.c) copies the caller-supplied spi_config from userspace without checking the frequency field, so a userspace thread that has been granted access to a DesignWare SPI device kernel object can pass frequency = 0 and trigger an unsigned integer divide-by-zero in spi_dw_configure().
On Cortex-M Mainline (SCB->CCR.DIV_0_TRP is set in z_arm_fault_init()) and on ARC (a dedicated __ev_div_zero vector) this raises a CPU exception, resulting in a kernel fault and local denial of service.
The fix rejects zero frequency and frequencies above clock_frequency / 2 (the DesignWare SSI databook minimum SCKDIV of 2) with -EINVAL. The defect affects all Zephyr releases up to and including v4.4.0; exploitation requires CONFIG_USERSPACE=y and an unprivileged thread already granted SPI driver permission. There is no memory-corruption or information-disclosure impact.
- Database specific
{ "cna_assigner": "zephyr", "cwe_ids": [ "CWE-369" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10679.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10679.json
- https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-3qcm-qwh2-v4hq
- https://nvd.nist.gov/vuln/detail/CVE-2026-10679
- https://github.com/zephyrproject-rtos/zephyr/commit/65935885622b0e4a5dbe5b82504c30097eb75ce0
- https://github.com/zephyrproject-rtos/zephyr
Affected packages
Git / github.com/zephyrproject-rtos/zephyr
Affected ranges
- Type
- GIT
- Repo
- https://github.com/zephyrproject-rtos/zephyr
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "1.8.0" }, { "fixed": "4.3.1" } ], "source": "AFFECTED_FIELD", "strategy": "StandardRange" }, { "range": [ { "introduced": "4.4.0" }, { "fixed": "4.4.2" } ], "source": "AFFECTED_FIELD", "strategy": "StandardRange" }, { "range": [ { "fixed": "65935885622b0e4a5dbe5b82504c30097eb75ce0" } ], "source": "REFERENCES_COMMIT" } ] }
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10679.json"
vanir_signatures
[
{
"deprecated": false,
"digest": {
"line_hashes": [
"82776265846683227006542027459325250091",
"146856296094369967311468552804903037937",
"177797596829250425287737839546708089675"
],
"threshold": 0.9
},
"id": "CVE-2026-10679-6f8ece94",
"signature_type": "Line",
"signature_version": "v1",
"source": "https://github.com/zephyrproject-rtos/zephyr/commit/65935885622b0e4a5dbe5b82504c30097eb75ce0",
"target": {
"file": "drivers/spi/spi_dw.c"
}
},
{
"deprecated": false,
"digest": {
"function_hash": "49403922862781008198449116658616648094",
"length": 2591
},
"id": "CVE-2026-10679-7ee18cf1",
"signature_type": "Function",
"signature_version": "v1",
"source": "https://github.com/zephyrproject-rtos/zephyr/commit/65935885622b0e4a5dbe5b82504c30097eb75ce0",
"target": {
"file": "drivers/spi/spi_dw.c",
"function": "spi_dw_configure"
}
}
]
vanir_signatures_modified
"2026-11-05T08:04:07Z"