{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72138", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.908Z", "datePublished": "2026-08-15T05:53:12.549Z", "dateUpdated": "2026-08-15T05:53:12.549Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-15T05:53:12.549Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen/gntdev: fix error handling in ioctl\n\nWhen gntdev_ioctl_map_grant_ref() fails to copy the operation result\nback to userspace after successfully adding the mapping to the list,\nthe error path returns -EFAULT without releasing the reference\nacquired by gntdev_alloc_map(). The mapping remains in priv->maps\nwith a refcount of 1, causing a memory leak and a dangling list\nentry.\n\nAdditionally, gntdev_add_map() may modify map->index to avoid overlap\nwith existing mappings. Therefore, the index returned to userspace\nmust be obtained after gntdev_add_map() completes.\n\nFix this by holding the mutex across gntdev_add_map(), retrieving\nthe correct index, and copy_to_user(). If copy_to_user() fails,\nremove the mapping from the list and release the reference while\nstill holding the lock.\n\n\nFix these issues by properly handling all error cases."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/xen/gntdev.c"], "versions": [{"version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "lessThan": "52dc40ef0cfee6ae89b7524967e73f0ba37906d7", "status": "affected", "versionType": "git"}, {"version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "lessThan": "1dd9cb98fe228e017fff9efb33862ff38c741b65", "status": "affected", "versionType": "git"}, {"version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "lessThan": "6df926130aee6cab9b5d2e5b7862e49ccac348dc", "status": "affected", "versionType": "git"}, {"version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "lessThan": "311011f8cc206c5af2877b03e3f627ee1b8fe024", "status": "affected", "versionType": "git"}, {"version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "lessThan": "18a693733f7ad004e1ab0466693121ca70cd95dd", "status": "affected", "versionType": "git"}, {"version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "lessThan": "16d3ccdabb8dee9be2cdcd6d3f9a125572ec0454", "status": "affected", "versionType": "git"}, {"version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "lessThan": "6883269a323609f68f6faa903f8f8ff3d191cec8", "status": "affected", "versionType": "git"}, {"version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "lessThan": "45ca1afe2fd14c04e37227e79d3f8455831d8408", "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/xen/gntdev.c"], "versions": [{"version": "2.6.39", "status": "affected"}, {"version": "0", "lessThan": "2.6.39", "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-rc2", "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": "2.6.39", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "7.2-rc2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/52dc40ef0cfee6ae89b7524967e73f0ba37906d7"}, {"url": "https://git.kernel.org/stable/c/1dd9cb98fe228e017fff9efb33862ff38c741b65"}, {"url": "https://git.kernel.org/stable/c/6df926130aee6cab9b5d2e5b7862e49ccac348dc"}, {"url": "https://git.kernel.org/stable/c/311011f8cc206c5af2877b03e3f627ee1b8fe024"}, {"url": "https://git.kernel.org/stable/c/18a693733f7ad004e1ab0466693121ca70cd95dd"}, {"url": "https://git.kernel.org/stable/c/16d3ccdabb8dee9be2cdcd6d3f9a125572ec0454"}, {"url": "https://git.kernel.org/stable/c/6883269a323609f68f6faa903f8f8ff3d191cec8"}, {"url": "https://git.kernel.org/stable/c/45ca1afe2fd14c04e37227e79d3f8455831d8408"}], "title": "xen/gntdev: fix error handling in ioctl", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/xen/gntdev.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "52dc40ef0cfee6ae89b7524967e73f0ba37906d7", "status": "affected", "version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "versionType": "git"}, {"lessThan": "1dd9cb98fe228e017fff9efb33862ff38c741b65", "status": "affected", "version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "versionType": "git"}, {"lessThan": "6df926130aee6cab9b5d2e5b7862e49ccac348dc", "status": "affected", "version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "versionType": "git"}, {"lessThan": "311011f8cc206c5af2877b03e3f627ee1b8fe024", "status": "affected", "version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "versionType": "git"}, {"lessThan": "18a693733f7ad004e1ab0466693121ca70cd95dd", "status": "affected", "version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "versionType": "git"}, {"lessThan": "16d3ccdabb8dee9be2cdcd6d3f9a125572ec0454", "status": "affected", "version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "versionType": "git"}, {"lessThan": "6883269a323609f68f6faa903f8f8ff3d191cec8", "status": "affected", "version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "versionType": "git"}, {"lessThan": "45ca1afe2fd14c04e37227e79d3f8455831d8408", "status": "affected", "version": "68b025c813c2eb41ff25628e3d4952d5185eb1a4", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/xen/gntdev.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.39"}, {"lessThan": "2.6.39", "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-rc2", "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\nxen/gntdev: fix error handling in ioctl\n\nWhen gntdev_ioctl_map_grant_ref() fails to copy the operation result\nback to userspace after successfully adding the mapping to the list,\nthe error path returns -EFAULT without releasing the reference\nacquired by gntdev_alloc_map(). The mapping remains in priv->maps\nwith a refcount of 1, causing a memory leak and a dangling list\nentry.\n\nAdditionally, gntdev_add_map() may modify map->index to avoid overlap\nwith existing mappings. Therefore, the index returned to userspace\nmust be obtained after gntdev_add_map() completes.\n\nFix this by holding the mutex across gntdev_add_map(), retrieving\nthe correct index, and copy_to_user(). If copy_to_user() fails,\nremove the mapping from the list and release the reference while\nstill holding the lock.\n\n\nFix these issues by properly handling all error cases."}], "id": "CVE-2026-72138", "lastModified": "2026-08-15T06:21:31.337", "metrics": {}, "published": "2026-08-15T06:21:31.337", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/16d3ccdabb8dee9be2cdcd6d3f9a125572ec0454"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/18a693733f7ad004e1ab0466693121ca70cd95dd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1dd9cb98fe228e017fff9efb33862ff38c741b65"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/311011f8cc206c5af2877b03e3f627ee1b8fe024"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/45ca1afe2fd14c04e37227e79d3f8455831d8408"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/52dc40ef0cfee6ae89b7524967e73f0ba37906d7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6883269a323609f68f6faa903f8f8ff3d191cec8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6df926130aee6cab9b5d2e5b7862e49ccac348dc"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

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