164 lines
7.9 KiB
JSON
164 lines
7.9 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-90426",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-11T19:38:34.814Z",
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"datePublished": "2026-09-17T16:09:48.460Z",
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"dateUpdated": "2026-10-19T09:03:29.972Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-19T09:03:29.972Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/tegra241-cmdqv: Free the error IRQ before tearing down VINTFs\n\ntegra241_cmdqv_remove() tears each VINTF down first, then calls free_irq().\nTearing a VINTF down frees vintf0 and clears cmdqv->vintfs[0]. An error in\nthat window makes tegra241_cmdqv_isr() read the stale slot and hand it to\ntegra241_vintf0_handle_error(), which dereferences a NULL or freed pointer.\n\nFree the IRQ before tearing the VINTFs down. free_irq() waits for in-flight\nhandlers to finish and blocks new ones, so no ISR can observe a VINTF as it\nis torn down.\n\nNote: a user-owned VINTF (viommu) could outlive this teardown, which unmaps\ncmdqv->base and frees cmdqv->vintfs, so a later viommu close then touches\nfreed memory. This is neither introduced nor fixed here: a physical IOMMU\nis not a pluggable device, so iommufd by design holds no reference on the\none behind a viommu, and this teardown is not expected while that viommu is\nstill alive."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c"
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],
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"versions": [
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{
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"version": "918eb5c856f6ce4cf93b4b38e4b5e156905c5943",
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"lessThan": "076a4f5b1fc2016b973a12bc2ebb9b730e5e1e48",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "918eb5c856f6ce4cf93b4b38e4b5e156905c5943",
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"lessThan": "735698e81f798b4c02dcb6291ffbdd1b962c8c66",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "918eb5c856f6ce4cf93b4b38e4b5e156905c5943",
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"lessThan": "421f5ab135cd4a1353891e5bf2602cfc3c01afc7",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "918eb5c856f6ce4cf93b4b38e4b5e156905c5943",
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"lessThan": "61f0d437988e5730b04442f6a7d30a9907339f2a",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c"
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],
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"versions": [
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{
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"version": "6.12",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.12",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.110",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.52",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.6",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.12",
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"versionEndExcluding": "6.12.110"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.12",
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"versionEndExcluding": "6.18.52"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.12",
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"versionEndExcluding": "7.2.6"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.12",
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"versionEndExcluding": "7.3"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/076a4f5b1fc2016b973a12bc2ebb9b730e5e1e48"
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},
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{
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"url": "https://git.kernel.org/stable/c/735698e81f798b4c02dcb6291ffbdd1b962c8c66"
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},
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{
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"url": "https://git.kernel.org/stable/c/421f5ab135cd4a1353891e5bf2602cfc3c01afc7"
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},
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{
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"url": "https://git.kernel.org/stable/c/61f0d437988e5730b04442f6a7d30a9907339f2a"
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}
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],
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"title": "iommu/tegra241-cmdqv: Free the error IRQ before tearing down VINTFs",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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} |