CVE-2023-52439
Vulnerability from cvelistv5
Published
2024-02-20 18:34
Modified
2024-12-19 08:19
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: uio: Fix use-after-free in uio_open core-1 core-2 ------------------------------------------------------- uio_unregister_device uio_open idev = idr_find() device_unregister(&idev->dev) put_device(&idev->dev) uio_device_release get_device(&idev->dev) kfree(idev) uio_free_minor(minor) uio_release put_device(&idev->dev) kfree(idev) ------------------------------------------------------- In the core-1 uio_unregister_device(), the device_unregister will kfree idev when the idev->dev kobject ref is 1. But after core-1 device_unregister, put_device and before doing kfree, the core-2 may get_device. Then: 1. After core-1 kfree idev, the core-2 will do use-after-free for idev. 2. When core-2 do uio_release and put_device, the idev will be double freed. To address this issue, we can get idev atomic & inc idev reference with minor_lock.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c9ae0b8605078eafc3bea053cc78791e97ba2e2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/17a8519cb359c3b483fb5c7367efa9a8a508bdeaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/35f102607054faafe78d2a6994b18d5d9d6e92adPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5cf604ee538ed0c467abe3b4cda5308a6398f0f7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5e0be1229ae199ebb90b33102f74a0f22d152570Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/913205930da6213305616ac539447702eaa85e41Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e93da893d52d82d57fc0db2ca566024e0f26ff50Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0c9ae0b8605078eafc3bea053cc78791e97ba2e2Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/17a8519cb359c3b483fb5c7367efa9a8a508bdeaPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/35f102607054faafe78d2a6994b18d5d9d6e92adPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5cf604ee538ed0c467abe3b4cda5308a6398f0f7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5e0be1229ae199ebb90b33102f74a0f22d152570Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/913205930da6213305616ac539447702eaa85e41Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e93da893d52d82d57fc0db2ca566024e0f26ff50Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Impacted products
Vendor Product Version
Linux Linux Version: 4.18
Show details on NVD website

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    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52439\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-20T21:15:08.213\",\"lastModified\":\"2024-11-21T08:39:45.820\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"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(\u0026idev-\u003edev)\\nput_device(\u0026idev-\u003edev)\\nuio_device_release\\n\\t\\t\\t\\tget_device(\u0026idev-\u003edev)\\nkfree(idev)\\nuio_free_minor(minor)\\n\\t\\t\\t\\tuio_release\\n\\t\\t\\t\\tput_device(\u0026idev-\u003edev)\\n\\t\\t\\t\\tkfree(idev)\\n-------------------------------------------------------\\n\\nIn the core-1 uio_unregister_device(), the device_unregister will kfree\\nidev when the idev-\u003edev 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 \u0026 inc idev reference with\\nminor_lock.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: uio: corrige use-after-free en uio_open core-1 core-2 ------------------------------------------------------- uio_unregister_device uio_open idev = idr_find() device_unregister(\u0026amp;idev-\u0026gt;dev) put_device(\u0026amp;idev-\u0026gt;dev) uio_device_release get_device(\u0026amp;idev-\u0026gt;dev) kfree(idev) uio_free_minor(minor) uio_release put_device(\u0026amp;idev-\u0026gt;dev) kfree(idev) ------------------------------------------------------- In the core-1 uio_unregister_device(), the device_unregister se liberar\u00e1 idev cuando la referencia del objeto idev-\u0026gt;dev kobject es 1. But after core-1 device_unregister, put_device and before doing kfree, the core-2 may get_device. Then: 1. After core-1 kfree idev, the core-2 will do use-after-free for idev. 2. When core-2 do uio_release and put_device, el idev se liberar\u00e1 dos veces. Para solucionar este problema, podemos obtener la referencia de idev atomic \u0026amp; inc idev con minor_lock.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"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\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-415\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartExcluding\":\"4.18.0\",\"versionEndExcluding\":\"4.19.306\",\"matchCriteriaId\":\"5A94A44F-4F9A-4447-AF13-47B88B4CD211\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20.0\",\"versionEndExcluding\":\"5.4.268\",\"matchCriteriaId\":\"35ADF607-EDCA-45AB-8FB6-9F2D40D47C0C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5.0\",\"versionEndExcluding\":\"5.10.209\",\"matchCriteriaId\":\"5D2E4F24-2FBB-4434-8598-2B1499E566B5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11.0\",\"versionEndExcluding\":\"5.15.148\",\"matchCriteriaId\":\"E25E1389-4B0F-407A-9C94-5908FF3EE88B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16.0\",\"versionEndExcluding\":\"6.1.74\",\"matchCriteriaId\":\"F7DD9841-CE11-470D-A285-A2E8E0F6640D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2.0\",\"versionEndExcluding\":\"6.6.13\",\"matchCriteriaId\":\"74A1FFC7-19FA-450E-BC2D-2BBD2EBF0A5F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7.0\",\"versionEndExcluding\":\"6.7.1\",\"matchCriteriaId\":\"664EB721-F519-48BB-B1C8-897D5990CD78\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.18:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"6AE7DC47-EAFA-42D5-BCF5-C7039EE3D771\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.18:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"DB2B91AF-ACE1-4F6F-B2D0-9D4B7D8D20CE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.18:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"30FBD992-DD41-441E-A6C7-D39DAC45DA34\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.18:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"10979D17-76B4-465F-A475-78680FBECEBD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.18:rc8:*:*:*:*:*:*\",\"matchCriteriaId\":\"56BF1EDD-3351-4E3E-AD42-54AF093ADB89\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0c9ae0b8605078eafc3bea053cc78791e97ba2e2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/17a8519cb359c3b483fb5c7367efa9a8a508bdea\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/35f102607054faafe78d2a6994b18d5d9d6e92ad\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5cf604ee538ed0c467abe3b4cda5308a6398f0f7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5e0be1229ae199ebb90b33102f74a0f22d152570\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/913205930da6213305616ac539447702eaa85e41\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e93da893d52d82d57fc0db2ca566024e0f26ff50\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/0c9ae0b8605078eafc3bea053cc78791e97ba2e2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/17a8519cb359c3b483fb5c7367efa9a8a508bdea\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60c\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/35f102607054faafe78d2a6994b18d5d9d6e92ad\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5cf604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  }
}


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