gsd-2023-52439
Vulnerability from gsd
Modified
2024-02-21 06:01
Details
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.
Aliases
{ "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2023-52439" ], "details": "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.", "id": "GSD-2023-52439", "modified": "2024-02-21T06:01:53.492110Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "cve@kernel.org", "ID": "CVE-2023-52439", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Linux", "version": { "version_data": [ { "version_affected": "\u003c", "version_name": "57c5f4df0a5a", "version_value": "3174e0f7de1b" }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected", "versions": [ { "status": "affected", "version": "4.18" }, { "lessThan": "4.18", "status": "unaffected", "version": "0", "versionType": "custom" }, { "lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.306", "versionType": "custom" }, { "lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.268", "versionType": "custom" }, { "lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.209", "versionType": "custom" }, { "lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.148", "versionType": "custom" }, { "lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.74", "versionType": "custom" }, { "lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.13", "versionType": "custom" }, { "lessThanOrEqual": "6.7.*", "status": "unaffected", "version": "6.7.1", "versionType": "custom" }, { "lessThanOrEqual": "*", "status": "unaffected", "version": "6.8", "versionType": "original_commit_for_fix" } ] } } ] } } ] }, "vendor_name": "Linux" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "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." } ] }, "generator": { "engine": "bippy-8df59b4913de" }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "references": { "reference_data": [ { "name": "https://git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60c", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60c" }, { "name": "https://git.kernel.org/stable/c/e93da893d52d82d57fc0db2ca566024e0f26ff50", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/e93da893d52d82d57fc0db2ca566024e0f26ff50" }, { "name": "https://git.kernel.org/stable/c/5e0be1229ae199ebb90b33102f74a0f22d152570", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/5e0be1229ae199ebb90b33102f74a0f22d152570" }, { "name": "https://git.kernel.org/stable/c/5cf604ee538ed0c467abe3b4cda5308a6398f0f7", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/5cf604ee538ed0c467abe3b4cda5308a6398f0f7" }, { "name": "https://git.kernel.org/stable/c/17a8519cb359c3b483fb5c7367efa9a8a508bdea", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/17a8519cb359c3b483fb5c7367efa9a8a508bdea" }, { "name": "https://git.kernel.org/stable/c/35f102607054faafe78d2a6994b18d5d9d6e92ad", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/35f102607054faafe78d2a6994b18d5d9d6e92ad" }, { "name": "https://git.kernel.org/stable/c/913205930da6213305616ac539447702eaa85e41", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/913205930da6213305616ac539447702eaa85e41" }, { "name": "https://git.kernel.org/stable/c/0c9ae0b8605078eafc3bea053cc78791e97ba2e2", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/0c9ae0b8605078eafc3bea053cc78791e97ba2e2" } ] } }, "nvd.nist.gov": { "cve": { "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5A94A44F-4F9A-4447-AF13-47B88B4CD211", "versionEndExcluding": "4.19.306", "versionStartExcluding": "4.18.0", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "35ADF607-EDCA-45AB-8FB6-9F2D40D47C0C", "versionEndExcluding": "5.4.268", "versionStartIncluding": "4.20.0", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5D2E4F24-2FBB-4434-8598-2B1499E566B5", "versionEndExcluding": "5.10.209", "versionStartIncluding": "5.5.0", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E25E1389-4B0F-407A-9C94-5908FF3EE88B", "versionEndExcluding": "5.15.148", "versionStartIncluding": "5.11.0", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "F7DD9841-CE11-470D-A285-A2E8E0F6640D", "versionEndExcluding": "6.1.74", "versionStartIncluding": "5.16.0", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "74A1FFC7-19FA-450E-BC2D-2BBD2EBF0A5F", "versionEndExcluding": "6.6.13", "versionStartIncluding": "6.2.0", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "664EB721-F519-48BB-B1C8-897D5990CD78", "versionEndExcluding": "6.7.1", "versionStartIncluding": "6.7.0", "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", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "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." } ], "id": "CVE-2023-52439", "lastModified": "2024-03-15T14:21:10.847", "metrics": { "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary" } ] }, "published": "2024-02-20T21:15:08.213", "references": [ { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": [ "Patch" ], "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" } ], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-415" } ], "source": "nvd@nist.gov", "type": "Primary" } ] } } } }
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