CVE-2026-72133

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72133", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.907Z", "datePublished": "2026-08-15T05:53:08.833Z", "dateUpdated": "2026-08-17T05:40:43.316Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:40:43.316Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: uniphier: Fix completion initialization order before devm_request_irq()\n\nThe driver calls devm_request_irq() before initializing the completion\nused by the interrupt handler. Because the interrupt may occur immediately\nafter devm_request_irq(), the handler may execute before init_completion().\n\nThis may result in calling complete() on an uninitialized completion,\ncausing undefined behavior. This has been observed with KASAN.\n\nFix this by initializing the completion before registering the IRQ."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is in uniphier_spi_probe() on Socionext UniPhier embedded SoCs; uniphier_spi_handler() runs during platform driver initialization at boot/module load, not via network protocols, remote packets, or runtime SPI syscalls/ioctls.\nAC:L - Commit and reporter confirm the SPI controller IRQ may assert immediately after devm_request_irq(); stale or pending SSI status on warm reboot can invoke complete() on uninitialized xfer_done without attacker luck.\nPR:N - uniphier_spi_probe() has no credential or capability checks before devm_request_irq(); on affected UniPhier boards the vulnerable probe sequence runs automatically during kernel boot without the attacker holding Linux privileges.\nUI:N - No victim action is required; a pending SPI controller interrupt during driver probe at boot or reboot can trigger the uninitialized complete() path without opening /dev/spidev*, mounting filesystems, or other user operations.\nS:U - Impact is kernel panic from uninitialized completion/spinlock handling within the host kernel; this is not a VM escape, hypervisor bypass, IOMMU violation, or sandbox boundary crossing on embedded UniPhier systems.\nC:H - complete() takes an uninitialized wait.lock and swake_up_locked() walks a zeroed task_list, causing KASAN wild-memory-access and invalid kernel memory reads beyond a strictly bounded NULL fault.\nI:H - Calling complete() on an uninitialized completion corrupts spinlock/wait-queue metadata in uniphier_spi_priv; KASAN-reported undefined behavior in IRQ context can corrupt adjacent kzalloc slab data and enable further kernel control primitives.\nA:H - KASAN wild-memory-access and NULL list dereference in uniphier_spi_handler() during probe cause kernel oops/panic on affected UniPhier embedded devices, denying all system availability until reboot."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/spi/spi-uniphier.c"], "versions": [{"version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "lessThan": "b9fcf0db433d79648ace74bc2b8b88f91e306304", "status": "affected", "versionType": "git"}, {"version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "lessThan": "82a5746c4c9e94f6f816ec7edea6ddc24417c6a5", "status": "affected", "versionType": "git"}, {"version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "lessThan": "f4bb0a91f7badd6d15ac8d783a1169d9e1e95c17", "status": "affected", "versionType": "git"}, {"version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "lessThan": "49f6705d80b5e6175d8435d9c72b66bd516a8e89", "status": "affected", "versionType": "git"}, {"version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "lessThan": "8b5798ce0007874c14611b8ee4ce6c749855260e", "status": "affected", "versionType": "git"}, {"version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "lessThan": "d44b828eb551bd59ba9f22457825cc3db3a39fc1", "status": "affected", "versionType": "git"}, {"version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "lessThan": "077a7bc1c32d3da9670c5e282ea3e5ac8a94be59", "status": "affected", "versionType": "git"}, {"version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "lessThan": "f3ad1c87d8201e54b66bd6072442f0b5d5a308ee", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/spi/spi-uniphier.c"], "versions": [{"version": "4.19", "status": "affected"}, {"version": "0", "lessThan": "4.19", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b9fcf0db433d79648ace74bc2b8b88f91e306304"}, {"url": "https://git.kernel.org/stable/c/82a5746c4c9e94f6f816ec7edea6ddc24417c6a5"}, {"url": "https://git.kernel.org/stable/c/f4bb0a91f7badd6d15ac8d783a1169d9e1e95c17"}, {"url": "https://git.kernel.org/stable/c/49f6705d80b5e6175d8435d9c72b66bd516a8e89"}, {"url": "https://git.kernel.org/stable/c/8b5798ce0007874c14611b8ee4ce6c749855260e"}, {"url": "https://git.kernel.org/stable/c/d44b828eb551bd59ba9f22457825cc3db3a39fc1"}, {"url": "https://git.kernel.org/stable/c/077a7bc1c32d3da9670c5e282ea3e5ac8a94be59"}, {"url": "https://git.kernel.org/stable/c/f3ad1c87d8201e54b66bd6072442f0b5d5a308ee"}], "title": "spi: uniphier: Fix completion initialization order before devm_request_irq()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/spi/spi-uniphier.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "b9fcf0db433d79648ace74bc2b8b88f91e306304", "status": "affected", "version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "versionType": "git"}, {"lessThan": "82a5746c4c9e94f6f816ec7edea6ddc24417c6a5", "status": "affected", "version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "versionType": "git"}, {"lessThan": "f4bb0a91f7badd6d15ac8d783a1169d9e1e95c17", "status": "affected", "version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "versionType": "git"}, {"lessThan": "49f6705d80b5e6175d8435d9c72b66bd516a8e89", "status": "affected", "version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "versionType": "git"}, {"lessThan": "8b5798ce0007874c14611b8ee4ce6c749855260e", "status": "affected", "version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "versionType": "git"}, {"lessThan": "d44b828eb551bd59ba9f22457825cc3db3a39fc1", "status": "affected", "version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "versionType": "git"}, {"lessThan": "077a7bc1c32d3da9670c5e282ea3e5ac8a94be59", "status": "affected", "version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "versionType": "git"}, {"lessThan": "f3ad1c87d8201e54b66bd6072442f0b5d5a308ee", "status": "affected", "version": "5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/spi/spi-uniphier.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.19"}, {"lessThan": "4.19", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.261", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.212", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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: uniphier: Fix completion initialization order before devm_request_irq()\n\nThe driver calls devm_request_irq() before initializing the completion\nused by the interrupt handler. Because the interrupt may occur immediately\nafter devm_request_irq(), the handler may execute before init_completion().\n\nThis may result in calling complete() on an uninitialized completion,\ncausing undefined behavior. This has been observed with KASAN.\n\nFix this by initializing the completion before registering the IRQ."}], "id": "CVE-2026-72133", "lastModified": "2026-08-17T06:18:13.007", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-08-15T06:21:30.760", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/077a7bc1c32d3da9670c5e282ea3e5ac8a94be59"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/49f6705d80b5e6175d8435d9c72b66bd516a8e89"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/82a5746c4c9e94f6f816ec7edea6ddc24417c6a5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8b5798ce0007874c14611b8ee4ce6c749855260e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b9fcf0db433d79648ace74bc2b8b88f91e306304"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d44b828eb551bd59ba9f22457825cc3db3a39fc1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f3ad1c87d8201e54b66bd6072442f0b5d5a308ee"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f4bb0a91f7badd6d15ac8d783a1169d9e1e95c17"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: spi: uniphier: Fix completion initialization order before devm_request_irq()", "id": "2516556", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516556"}, "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"}, "cwe": "CWE-908", "details": ["A flaw was found in the Linux kernel's spi: uniphier driver. The driver attempts to use an internal synchronization mechanism before it has been properly set up. If an interrupt occurs at a precise moment, the system may try to operate on this uninitialized mechanism, leading to unpredictable system behavior. This could result in system instability or a denial of service."], "name": "CVE-2026-72133", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72133\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72133\nhttps://lore.kernel.org/linux-cve-announce/2026081530-CVE-2026-72133-a965@gregkh/T"], "threat_severity": "Moderate"}

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