185 lines
8.7 KiB
JSON
185 lines
8.7 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-2023-53501",
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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": "2025-10-01T11:39:39.404Z",
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"datePublished": "2025-10-01T11:45:52.204Z",
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"dateUpdated": "2026-05-11T19:46:13.112Z"
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},
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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": "2026-05-11T19:46:13.112Z"
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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/amd/iommu_v2: Fix pasid_state refcount dec hit 0 warning on pasid unbind\n\nWhen unbinding pasid - a race condition exists vs outstanding page faults.\n\nTo prevent this, the pasid_state object contains a refcount.\n * set to 1 on pasid bind\n * incremented on each ppr notification start\n * decremented on each ppr notification done\n * decremented on pasid unbind\n\nSince refcount_dec assumes that refcount will never reach 0:\n the current implementation causes the following to be invoked on\n pasid unbind:\n REFCOUNT_WARN(\"decrement hit 0; leaking memory\")\n\nFix this issue by changing refcount_dec to refcount_dec_and_test\nto explicitly handle refcount=1."
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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/amd/iommu_v2.c"
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],
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"lessThan": "a50d60b8f2aff46dd7c7edb4a5835cdc4d432c22",
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"status": "affected",
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"versionType": "git"
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{
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"version": "8bc54824da4e8fcf0ed679cf09ac32f23d83254a",
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"lessThan": "13ed255248dfbbb7f23f9170c7a537fb9ca22c73",
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"status": "affected",
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"lessThan": "9ccc51be3126b25cfe9351dbffde946c925cc28a",
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"status": "affected",
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{
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"lessThan": "534103bcd52ca9c1fecbc70e717b4a538dc4ded8",
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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/amd/iommu_v2.c"
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],
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"versions": [
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{
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"version": "5.15",
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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": "5.15",
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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": "5.15.132",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.53",
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"lessThanOrEqual": "6.1.*",
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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": "6.4.16",
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"lessThanOrEqual": "6.4.*",
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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": "6.5.3",
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"lessThanOrEqual": "6.5.*",
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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": "6.6",
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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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"versionStartIncluding": "5.15",
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"versionEndExcluding": "5.15.132"
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"versionEndExcluding": "6.5.3"
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/a50d60b8f2aff46dd7c7edb4a5835cdc4d432c22"
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},
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{
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"url": "https://git.kernel.org/stable/c/13ed255248dfbbb7f23f9170c7a537fb9ca22c73"
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},
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{
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"url": "https://git.kernel.org/stable/c/9ccc51be3126b25cfe9351dbffde946c925cc28a"
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},
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{
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"url": "https://git.kernel.org/stable/c/98d86bf32187db27946ca817c2467a5f2f7aa02f"
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},
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{
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"url": "https://git.kernel.org/stable/c/534103bcd52ca9c1fecbc70e717b4a538dc4ded8"
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}
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],
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"title": "iommu/amd/iommu_v2: Fix pasid_state refcount dec hit 0 warning on pasid unbind",
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