{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2023-52439", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-20T12:30:33.291Z", "datePublished": "2024-02-20T18:34:49.323Z", "dateUpdated": "2024-09-11T17:33:35.621Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-28T19:49:24.554Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nuio: Fix use-after-free in uio_open\n\ncore-1\t\t\t\tcore-2\n-------------------------------------------------------\nuio_unregister_device\t\tuio_open\n\t\t\t\tidev = idr_find()\ndevice_unregister(&idev->dev)\nput_device(&idev->dev)\nuio_device_release\n\t\t\t\tget_device(&idev->dev)\nkfree(idev)\nuio_free_minor(minor)\n\t\t\t\tuio_release\n\t\t\t\tput_device(&idev->dev)\n\t\t\t\tkfree(idev)\n-------------------------------------------------------\n\nIn the core-1 uio_unregister_device(), the device_unregister will kfree\nidev when the idev->dev kobject ref is 1. But after core-1\ndevice_unregister, put_device and before doing kfree, the core-2 may\nget_device. Then:\n1. After core-1 kfree idev, the core-2 will do use-after-free for idev.\n2. When core-2 do uio_release and put_device, the idev will be double\n freed.\n\nTo address this issue, we can get idev atomic & inc idev reference with\nminor_lock." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/uio/uio.c" ], "versions": [ { "version": "57c5f4df0a5a", "lessThan": "3174e0f7de1b", "status": "affected", "versionType": "git" }, { "version": "57c5f4df0a5a", "lessThan": "e93da893d52d", "status": "affected", "versionType": "git" }, { "version": "57c5f4df0a5a", "lessThan": "5e0be1229ae1", "status": "affected", "versionType": "git" }, { "version": "57c5f4df0a5a", "lessThan": "5cf604ee538e", "status": "affected", "versionType": "git" }, { "version": "57c5f4df0a5a", "lessThan": "17a8519cb359", "status": "affected", "versionType": "git" }, { "version": "57c5f4df0a5a", "lessThan": "35f102607054", "status": "affected", "versionType": "git" }, { "version": "57c5f4df0a5a", "lessThan": "913205930da6", "status": "affected", "versionType": "git" }, { "version": "57c5f4df0a5a", "lessThan": "0c9ae0b86050", "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/uio/uio.c" ], "versions": [ { "version": "4.18", "status": "affected" }, { "version": "0", "lessThan": "4.18", "status": "unaffected", "versionType": "custom" }, { "version": "4.19.306", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.268", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.209", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.148", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.74", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.13", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.7.1", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60c" }, { "url": "https://git.kernel.org/stable/c/e93da893d52d82d57fc0db2ca566024e0f26ff50" }, { "url": "https://git.kernel.org/stable/c/5e0be1229ae199ebb90b33102f74a0f22d152570" }, { "url": "https://git.kernel.org/stable/c/5cf604ee538ed0c467abe3b4cda5308a6398f0f7" }, { "url": "https://git.kernel.org/stable/c/17a8519cb359c3b483fb5c7367efa9a8a508bdea" }, { "url": "https://git.kernel.org/stable/c/35f102607054faafe78d2a6994b18d5d9d6e92ad" }, { "url": "https://git.kernel.org/stable/c/913205930da6213305616ac539447702eaa85e41" }, { "url": "https://git.kernel.org/stable/c/0c9ae0b8605078eafc3bea053cc78791e97ba2e2" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html" } ], "title": "uio: Fix use-after-free in uio_open", "x_generator": { "engine": "bippy-a5840b7849dd" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T22:55:41.851Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60c", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/e93da893d52d82d57fc0db2ca566024e0f26ff50", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/5e0be1229ae199ebb90b33102f74a0f22d152570", "tags": [ "x_transferred" ] }, { "url": 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"partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T16:02:55.773038Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:35.621Z" } } ] }, "dataVersion": "5.1" }