{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-43332", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:56.002Z", "datePublished": "2026-05-08T13:31:19.460Z", "dateUpdated": "2026-08-05T12:27:17.446Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:27:17.446Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal: core: Fix thermal zone device registration error path\n\nIf thermal_zone_device_register_with_trips() fails after registering\na thermal zone device, it needs to wait for the tz->removal completion\nlike thermal_zone_device_unregister(), in case user space has managed\nto take a reference to the thermal zone device's kobject, in which case\nthermal_release() may not be called by the error path itself and tz may\nbe freed prematurely.\n\nAdd the missing wait_for_completion() call to the thermal zone device\nregistration error path." } ], "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 - The vulnerable path is thermal zone registration/error handling exposed through local kernel device/sysfs activity, not through remote packets or an adjacent/physical protocol.\nAC:L - The race is between local userspace taking a sysfs/kobject reference and the registration error path dropping the device reference; a local attacker can influence the reference side and resource pressure, so under the overestimate rule this is low complexity.\nPR:L - No capability is needed to take references to readable thermal sysfs objects, and a basic local user can race that exposure; root-only debugfs testing paths also exist, but the higher-severity defensible metric is low privileges.\nUI:N - Exploitation does not require a separate victim to open a file or mount anything; the attacker can run local code to monitor/open the thermal sysfs object during registration failure.\nS:U - The corrupted object is in the kernel thermal core and impacts the same kernel security authority; there is no VM, IOMMU, or sandbox boundary crossing.\nC:H - The missing wait can free the thermal zone while a kobject reference keeps release deferred, producing a use-after-free on a kernel object; such memory corruption can be leveraged for kernel memory disclosure.\nI:H - The delayed release path dereferences and frees fields from the prematurely freed thermal zone, giving exploitable heap corruption/use-after-free conditions that can support arbitrary modification or code execution.\nA:H - Even without full exploitation, the use-after-free in the device release path can cause kernel oops/panic or heap corruption, resulting in high availability impact." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/thermal/thermal_core.c" ], "versions": [ { "version": "335176dd8ebaca6493807dceea33c478305667fa", "lessThan": "9e796001af97a1f7368d5114b7a8533dd98d797a", "status": "affected", "versionType": "git" }, { "version": "04e6ccfc93c5a1aa1d75a537cf27e418895e20ea", "lessThan": "604da9c04c218362e1c1457304ebeb9c199d537c", "status": "affected", "versionType": "git" }, { "version": "04e6ccfc93c5a1aa1d75a537cf27e418895e20ea", "lessThan": "c4c7219e93319bba9ba0765dee597784c78f63c5", "status": "affected", "versionType": "git" }, { "version": "04e6ccfc93c5a1aa1d75a537cf27e418895e20ea", "lessThan": "4d390f0e507dfb16d58f83a58d78d1150dc8b9d7", "status": "affected", "versionType": "git" }, { "version": "04e6ccfc93c5a1aa1d75a537cf27e418895e20ea", "lessThan": "9e07e3b81807edd356e1f794cffa00a428eff443", "status": "affected", "versionType": "git" }, { "version": "02871710b93058eb1249d5847c0b2d1c2c3c98ae", "status": "affected", "versionType": "git" }, { "version": "6.6.14", "lessThan": "6.6.134", "status": "affected", "versionType": "semver" }, { "version": "6.7.2", "lessThan": "6.8", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/thermal/thermal_core.c" ], "versions": [ { "version": "6.8", "status": "affected" }, { "version": "0", "lessThan": "6.8", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.134", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.81", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.22", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19.12", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0", "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": "6.6.14", "versionEndExcluding": "6.6.134" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.12.81" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.18.22" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.19.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.0" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/9e796001af97a1f7368d5114b7a8533dd98d797a" }, { "url": "https://git.kernel.org/stable/c/604da9c04c218362e1c1457304ebeb9c199d537c" }, { "url": "https://git.kernel.org/stable/c/c4c7219e93319bba9ba0765dee597784c78f63c5" }, { "url": "https://git.kernel.org/stable/c/4d390f0e507dfb16d58f83a58d78d1150dc8b9d7" }, { "url": "https://git.kernel.org/stable/c/9e07e3b81807edd356e1f794cffa00a428eff443" } ], "title": "thermal: core: Fix thermal zone device registration error path", "x_generator": { "engine": "bippy-1.2.0" } } } }