CVE-2026-10659

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{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-10659", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-07T13:24:10.256609Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-07T13:24:23.052Z"}}], "cna": {"title": "NULL pointer dereference in Zephyr Dhara FTL disk driver on flash read error during journal resume", "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 4.7, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"}}], "affected": [{"vendor": "zephyrproject", "product": "zephyr", "versions": [{"status": "affected", "version": "4.4.0", "lessThan": "4.4.2", "versionType": "semver"}], "packageName": "zephyr", "programFiles": ["drivers/disk/ftl_dhara.c"], "collectionURL": "https://github.com/zephyrproject-rtos/zephyr", "defaultStatus": "unaffected"}], "references": [{"url": "https://github.com/zephyrproject-rtos/zephyr/commit/a8371b0d4719efe37a66e2abb618ad9b81792212", "name": "Fix commit", "tags": ["patch"]}, {"url": "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-q28v-3729-f82g", "name": "GHSA-q28v-3729-f82g"}], "x_generator": {"engine": "cvelib 1.8.0"}, "descriptions": [{"lang": "en", "value": "The Dhara flash translation layer disk driver (drivers/disk/ftl_dhara.c) implemented the dhara_nand_ callbacks so that, on a flash error, the error code was written unconditionally through the caller-supplied dhara_error_t err pointer (e.g. *err = DHARA_E_ECC in dhara_nand_read, and similar in dhara_nand_erase/prog/copy).\n\nThe upstream Dhara library calls these callbacks with err == NULL along its journal-resume binary search: find_last_checkblock() invokes find_checkblock(j, mid, &found, NULL), which forwards the NULL pointer into dhara_nand_read(). This path runs during disk_ftl_access_init() -> dhara_map_resume() whenever the FTL disk is mounted/initialised.\n\nIf a flash read error (uncorrectable ECC, bad block, controller error) occurs on one of the probed checkpoint pages, the driver dereferences and writes to NULL, faulting the kernel (denial of service). The trigger is conditioned on the NAND medium content/health, which can be influenced by media wear, induced faults, or a corrupted/crafted on-flash image.\n\nThe fix routes all error assignments through the library's NULL-safe dhara_set_error() helper. Affects Zephyr v4.4.0, where the driver was introduced."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "memory-safety"}]}], "providerMetadata": {"orgId": "e2e69745-5e70-4e92-8431-deb5529a81ad", "shortName": "zephyr", "dateUpdated": "2026-08-31T23:12:42.730Z"}}}, "cveMetadata": {"cveId": "CVE-2026-10659", "state": "PUBLISHED", "dateUpdated": "2026-08-31T23:12:42.730Z", "dateReserved": "2026-06-02T15:24:36.650Z", "assignerOrgId": "e2e69745-5e70-4e92-8431-deb5529a81ad", "datePublished": "2026-07-07T12:58:11.505Z", "assignerShortName": "zephyr"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"collectionURL": "https://github.com/zephyrproject-rtos/zephyr", "defaultStatus": "unaffected", "packageName": "zephyr", "product": "zephyr", "programFiles": ["drivers/disk/ftl_dhara.c"], "vendor": "zephyrproject", "versions": [{"lessThan": "4.4.2", "status": "affected", "version": "4.4.0", "versionType": "semver"}]}], "source": "vulnerabilities@zephyrproject.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zephyrproject:zephyr:4.4.0:*:*:*:*:*:*:*", "matchCriteriaId": "BCD89951-E5B1-416E-B009-99D2CFB72BFD", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Dhara flash translation layer disk driver (drivers/disk/ftl_dhara.c) implemented the dhara_nand_ callbacks so that, on a flash error, the error code was written unconditionally through the caller-supplied dhara_error_t err pointer (e.g. *err = DHARA_E_ECC in dhara_nand_read, and similar in dhara_nand_erase/prog/copy).\n\nThe upstream Dhara library calls these callbacks with err == NULL along its journal-resume binary search: find_last_checkblock() invokes find_checkblock(j, mid, &found, NULL), which forwards the NULL pointer into dhara_nand_read(). This path runs during disk_ftl_access_init() -> dhara_map_resume() whenever the FTL disk is mounted/initialised.\n\nIf a flash read error (uncorrectable ECC, bad block, controller error) occurs on one of the probed checkpoint pages, the driver dereferences and writes to NULL, faulting the kernel (denial of service). The trigger is conditioned on the NAND medium content/health, which can be influenced by media wear, induced faults, or a corrupted/crafted on-flash image.\n\nThe fix routes all error assignments through the library's NULL-safe dhara_set_error() helper. Affects Zephyr v4.4.0, where the driver was introduced."}, {"lang": "es", "value": "El controlador de disco de la capa de traducci\u00f3n flash Dhara (drivers/disk/ftl_dhara.c) implement\u00f3 las retrollamadas dhara_nand_ de modo que, ante un error de flash, el c\u00f3digo de error se escrib\u00eda incondicionalmente a trav\u00e9s del puntero dhara_error_t err proporcionado por el llamador (p. ej., err = DHARA_E_ECC en dhara_nand_read, y similar en dhara_nand_erase/prog/copy). La biblioteca Dhara ascendente llama a estas retrollamadas con err == NULL a lo largo de su b\u00fasqueda binaria de reanudaci\u00f3n de diario: find_last_checkblock() invoca find_checkblock(j, mid, &found, NULL), que reenv\u00eda el puntero NULL a dhara_nand_read(). Esta ruta se ejecuta durante disk_ftl_access_init() -> dhara_map_resume() cada vez que el disco FTL se monta/inicializa. Si ocurre un error de lectura de flash (ECC incorregible, bloque defectuoso, error de controlador) en una de las p\u00e1ginas de punto de control sondeadas, el controlador desreferencia y escribe en NULL, provocando un fallo en el kernel (denegaci\u00f3n de servicio). El disparador est\u00e1 condicionado por el contenido/estado del medio NAND, que puede ser influenciado por el desgaste del medio, fallos inducidos o una imagen en flash corrupta/manipulada. La soluci\u00f3n encamina todas las asignaciones de error a trav\u00e9s de la funci\u00f3n auxiliar dhara_set_error() de la biblioteca, que es segura frente a NULL. Afecta a Zephyr v4.4.0, donde se introdujo el controlador."}], "id": "CVE-2026-10659", "lastModified": "2026-10-25T20:10:00.147", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "vulnerabilities@zephyrproject.org", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-10659", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-07T13:24:10.256609Z", "version": "2.0.3"}}]}, "published": "2026-07-07T13:16:29.043", "references": [{"source": "vulnerabilities@zephyrproject.org", "tags": ["Patch"], "url": "https://github.com/zephyrproject-rtos/zephyr/commit/a8371b0d4719efe37a66e2abb618ad9b81792212"}, {"source": "vulnerabilities@zephyrproject.org", "tags": ["Exploit", "Patch", "Vendor Advisory"], "url": "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-q28v-3729-f82g"}], "sourceIdentifier": "vulnerabilities@zephyrproject.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "vulnerabilities@zephyrproject.org", "type": "Secondary"}]}

{}

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