CVE-2025-68746

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Ideally we would also want to signal that the IRQ\nthread no longer needs to be run after the timeout is hit to avoid the\nextra check for a valid transfer."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - A local process can reach the vulnerable controller through SPI/MTD device I/O or flash-backed filesystem access; the controller is not inherently network-facing.\nAC:L - The attacker can repeatedly initiate transfers while generating CPU or interrupt contention to delay the threaded IRQ beyond the fixed timeout. The race is therefore attacker-influenceable and repeatable.\nPR:L - An ordinary user with access to an exposed spidev/MTD node or mounted SPI-NOR storage can initiate transfers, and the relevant read and SPI ioctl paths impose no capability check.\nUI:N - Exploitation requires no action by another user after the attacker initiates the transfer and scheduling race.\nS:U - The stale-pointer corruption occurs within the host kernel and does not inherently cross a VM, IOMMU, or other security authority boundary.\nC:H - The stale spi_transfer exposes freed buffer pointers and DMA addresses, providing potentially attacker-shaped kernel-memory reads and information disclosure.\nI:H - The PIO and DMA receive paths write through stale buffer pointers and can remap reclaimed transfer fields, making arbitrary kernel-memory corruption and control-flow hijacking defensible.\nA:H - Dereferencing stale transfer or buffer memory can cause a kernel fault, panic, or controller failure, and the condition can be triggered repeatedly."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/spi/spi-tegra210-quad.c"], "versions": [{"version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "lessThan": "88db8bb7ed1bb474618acdf05ebd4f0758d244e2", "status": "affected", "versionType": "git"}, {"version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "lessThan": "83309dd551cfd60a5a1a98d9cab19f435b44d46d", "status": "affected", "versionType": "git"}, {"version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "lessThan": "c934e40246da2c5726d14e94719c514e30840df8", "status": "affected", "versionType": "git"}, {"version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "lessThan": "551060efb156c50fe33799038ba8145418cfdeef", "status": "affected", "versionType": "git"}, {"version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "lessThan": 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"https://git.kernel.org/stable/c/bb0c58be84f907285af45657c1d4847b960a12bf"}, {"url": "https://git.kernel.org/stable/c/01bbf25c767219b14c3235bfa85906b8d2cb8fbc"}, {"url": "https://git.kernel.org/stable/c/b4e002d8a7cee3b1d70efad0e222567f92a73000"}], "title": "spi: tegra210-quad: Fix timeout handling", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-68746", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:05:04.392676Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T15:09:44.157Z"}}]}}

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The race is therefore attacker-influenceable and repeatable.\nPR:L - An ordinary user with access to an exposed spidev/MTD node or mounted SPI-NOR storage can initiate transfers, and the relevant read and SPI ioctl paths impose no capability check.\nUI:N - Exploitation requires no action by another user after the attacker initiates the transfer and scheduling race.\nS:U - The stale-pointer corruption occurs within the host kernel and does not inherently cross a VM, IOMMU, or other security authority boundary.\nC:H - The stale spi_transfer exposes freed buffer pointers and DMA addresses, providing potentially attacker-shaped kernel-memory reads and information disclosure.\nI:H - The PIO and DMA receive paths write through stale buffer pointers and can remap reclaimed transfer fields, making arbitrary kernel-memory corruption and control-flow hijacking defensible.\nA:H - Dereferencing stale transfer or buffer memory can cause a kernel fault, panic, or controller failure, and the condition can be triggered repeatedly."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "lessThan": "88db8bb7ed1bb474618acdf05ebd4f0758d244e2", "versionType": "git"}, {"status": "affected", "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "lessThan": "83309dd551cfd60a5a1a98d9cab19f435b44d46d", "versionType": "git"}, {"status": "affected", "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "lessThan": "c934e40246da2c5726d14e94719c514e30840df8", "versionType": "git"}, {"status": "affected", "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "lessThan": "551060efb156c50fe33799038ba8145418cfdeef", "versionType": "git"}, {"status": "affected", "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "lessThan": "bb0c58be84f907285af45657c1d4847b960a12bf", "versionType": "git"}, {"status": "affected", "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "lessThan": "01bbf25c767219b14c3235bfa85906b8d2cb8fbc", "versionType": "git"}, {"status": "affected", "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "lessThan": "b4e002d8a7cee3b1d70efad0e222567f92a73000", "versionType": "git"}], "programFiles": ["drivers/spi/spi-tegra210-quad.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.12"}, {"status": "unaffected", "version": "0", "lessThan": "5.12", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.198", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.160", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.120", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.63", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.17.13", "versionType": "semver", "lessThanOrEqual": "6.17.*"}, {"status": "unaffected", "version": "6.18.2", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/spi/spi-tegra210-quad.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/88db8bb7ed1bb474618acdf05ebd4f0758d244e2"}, {"url": "https://git.kernel.org/stable/c/83309dd551cfd60a5a1a98d9cab19f435b44d46d"}, {"url": "https://git.kernel.org/stable/c/c934e40246da2c5726d14e94719c514e30840df8"}, {"url": "https://git.kernel.org/stable/c/551060efb156c50fe33799038ba8145418cfdeef"}, {"url": "https://git.kernel.org/stable/c/bb0c58be84f907285af45657c1d4847b960a12bf"}, {"url": "https://git.kernel.org/stable/c/01bbf25c767219b14c3235bfa85906b8d2cb8fbc"}, {"url": "https://git.kernel.org/stable/c/b4e002d8a7cee3b1d70efad0e222567f92a73000"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: tegra210-quad: Fix timeout handling\n\nWhen the CPU that the QSPI interrupt handler runs on (typically CPU 0)\nis excessively busy, it can lead to rare cases of the IRQ thread not\nrunning before the transfer timeout is reached.\n\nWhile handling the timeouts, any pending transfers are cleaned up and\nthe message that they correspond to is marked as failed, which leaves\nthe curr_xfer field pointing at stale memory.\n\nTo avoid this, clear curr_xfer to NULL upon timeout and check for this\ncondition when the IRQ thread is finally run.\n\nWhile at it, also make sure to clear interrupts on failure so that new\ninterrupts can be run.\n\nA better, more involved, fix would move the interrupt clearing into a\nhard IRQ handler. Ideally we would also want to signal that the IRQ\nthread no longer needs to be run after the timeout is hit to avoid the\nextra check for a valid transfer."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.198", "versionStartIncluding": "5.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.160", "versionStartIncluding": "5.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.120", "versionStartIncluding": "5.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.63", "versionStartIncluding": "5.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.17.13", "versionStartIncluding": "5.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.2", "versionStartIncluding": "5.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.19", "versionStartIncluding": "5.12"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:11:15.698Z"}}}, "cveMetadata": {"cveId": "CVE-2025-68746", "state": "PUBLISHED", "dateUpdated": "2026-10-16T15:09:44.157Z", "dateReserved": "2025-12-24T10:30:51.031Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-12-24T12:09:42.213Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/spi/spi-tegra210-quad.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "88db8bb7ed1bb474618acdf05ebd4f0758d244e2", "status": "affected", "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "versionType": "git"}, {"lessThan": "83309dd551cfd60a5a1a98d9cab19f435b44d46d", "status": "affected", "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "versionType": "git"}, {"lessThan": "c934e40246da2c5726d14e94719c514e30840df8", "status": "affected", "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "versionType": "git"}, {"lessThan": "551060efb156c50fe33799038ba8145418cfdeef", "status": "affected", "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "versionType": "git"}, {"lessThan": "bb0c58be84f907285af45657c1d4847b960a12bf", "status": "affected", "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "versionType": "git"}, {"lessThan": "01bbf25c767219b14c3235bfa85906b8d2cb8fbc", "status": "affected", "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "versionType": "git"}, {"lessThan": "b4e002d8a7cee3b1d70efad0e222567f92a73000", "status": "affected", "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/spi/spi-tegra210-quad.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.12"}, {"lessThan": "5.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.198", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.160", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.120", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.63", "versionType": "semver"}, {"lessThanOrEqual": "6.17.*", "status": "unaffected", "version": "6.17.13", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.19", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: tegra210-quad: Fix timeout handling\n\nWhen the CPU that the QSPI interrupt handler runs on (typically CPU 0)\nis excessively busy, it can lead to rare cases of the IRQ thread not\nrunning before the transfer timeout is reached.\n\nWhile handling the timeouts, any pending transfers are cleaned up and\nthe message that they correspond to is marked as failed, which leaves\nthe curr_xfer field pointing at stale memory.\n\nTo avoid this, clear curr_xfer to NULL upon timeout and check for this\ncondition when the IRQ thread is finally run.\n\nWhile at it, also make sure to clear interrupts on failure so that new\ninterrupts can be run.\n\nA better, more involved, fix would move the interrupt clearing into a\nhard IRQ handler. Ideally we would also want to signal that the IRQ\nthread no longer needs to be run after the timeout is hit to avoid the\nextra check for a valid transfer."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nspi: tegra210-quad: Correcci\u00f3n del manejo de tiempos de espera\n\nCuando la CPU en la que se ejecuta el manejador de interrupciones QSPI (t\u00edpicamente CPU 0) est\u00e1 excesivamente ocupada, puede dar lugar a casos raros en los que el hilo IRQ no se ejecute antes de que se alcance el tiempo de espera de la transferencia.\n\nMientras se manejan los tiempos de espera, cualquier transferencia pendiente se limpia y el mensaje al que corresponden se marca como fallido, lo que deja el campo curr_xfer apuntando a memoria obsoleta.\n\nPara evitar esto, borre curr_xfer a NULL al expirar el tiempo de espera y verifique esta condici\u00f3n cuando el hilo IRQ finalmente se ejecute.\n\nYa que estamos, aseg\u00farese tambi\u00e9n de borrar las interrupciones en caso de fallo para que se puedan ejecutar nuevas interrupciones.\n\nUna soluci\u00f3n mejor y m\u00e1s compleja mover\u00eda la limpieza de interrupciones a un manejador de IRQ de hardware. Idealmente, tambi\u00e9n querr\u00edamos se\u00f1alar que el hilo IRQ ya no necesita ejecutarse despu\u00e9s de que se alcance el tiempo de espera para evitar la comprobaci\u00f3n adicional de una transferencia v\u00e1lida."}], "id": "CVE-2025-68746", "lastModified": "2026-10-16T15:16:52.790", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-68746", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:05:04.392676Z", "version": "2.0.3"}}]}, "published": "2025-12-24T13:16:29.533", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/01bbf25c767219b14c3235bfa85906b8d2cb8fbc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/551060efb156c50fe33799038ba8145418cfdeef"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/83309dd551cfd60a5a1a98d9cab19f435b44d46d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/88db8bb7ed1bb474618acdf05ebd4f0758d244e2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b4e002d8a7cee3b1d70efad0e222567f92a73000"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bb0c58be84f907285af45657c1d4847b960a12bf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c934e40246da2c5726d14e94719c514e30840df8"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: spi: tegra210-quad: Fix timeout handling", "id": "2425059", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2425059"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-68746", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-12-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-68746\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-68746\nhttps://lore.kernel.org/linux-cve-announce/2025122416-CVE-2025-68746-bd3e@gregkh/T"], "threat_severity": "Low"}

{}