CVE-2022-50499

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The caller takes the error code and handles the error by calling\ndvb_media_device_free(), which unregisters the entity and frees the\nfield again if it is not NULL. As dvb->entity may not NULLed in\ndvb_create_media_entity() when the allocation of dvbdev->pad fails, a\ndouble free may occur. This may also cause an Use After free in\nmedia_device_unregister_entity().\n\nFix this by storing NULL to dvb->entity when it is freed."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/media/dvb-core/dvbdev.c"], "versions": [{"version": "9db28659aa893c68f162b11fd63bb7f6a713e52f", "lessThan": "0588b12c418c3e4f927ced11f27b02ef4a5bfb07", "status": "affected", "versionType": "git"}, {"version": "1399a136127bfe1b9bb7c951d9851da62a519121", "lessThan": "e9a78485b658361fab6a5547377be6c1af6f1b3d", "status": "affected", "versionType": "git"}, {"version": "4df2427a5148093987437054bb82da4d014dcd59", "lessThan": "70bc51303871159796b55ba1a8f16637b46c2511", "status": "affected", "versionType": "git"}, {"version": "fcd5ce4b3936242e6679875a4d3c3acfc8743e15", "lessThan": "b21f62b49ee9c3e0216d685d9cfd6003e5727271", "status": "affected", "versionType": "git"}, 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"https://git.kernel.org/stable/c/772892b29ac50c2c5e918fc80104aa6ede81d837"}, {"url": "https://git.kernel.org/stable/c/123eddf92a114e03919942641d2c2b1f4ca56ea6"}, {"url": "https://git.kernel.org/stable/c/6b0d0477fce747d4137aa65856318b55fba72198"}], "title": "media: dvb-core: Fix double free in dvb_register_device()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

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dvb->entity is allocated and initialized. If\nthe initialization fails, it frees the dvb->entity, and return an error\ncode. The caller takes the error code and handles the error by calling\ndvb_media_device_free(), which unregisters the entity and frees the\nfield again if it is not NULL. As dvb->entity may not NULLed in\ndvb_create_media_entity() when the allocation of dvbdev->pad fails, a\ndouble free may occur. This may also cause an Use After free in\nmedia_device_unregister_entity().\n\nFix this by storing NULL to dvb->entity when it is freed."}], "id": "CVE-2022-50499", "lastModified": "2026-06-17T05:23:40.437", "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": "2025-10-04T16:15:47.027", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0588b12c418c3e4f927ced11f27b02ef4a5bfb07"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/123eddf92a114e03919942641d2c2b1f4ca56ea6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6b0d0477fce747d4137aa65856318b55fba72198"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/70bc51303871159796b55ba1a8f16637b46c2511"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/772892b29ac50c2c5e918fc80104aa6ede81d837"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/acf984a3718c2458eb9e08b6714490a04f213c58"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b21f62b49ee9c3e0216d685d9cfd6003e5727271"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e9a78485b658361fab6a5547377be6c1af6f1b3d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-415"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: media: dvb-core: Fix double free in dvb_register_device()", "id": "2401454", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2401454"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmedia: dvb-core: Fix double free in dvb_register_device()\nIn function dvb_register_device() -> dvb_register_media_device() ->\ndvb_create_media_entity(), dvb->entity is allocated and initialized. If\nthe initialization fails, it frees the dvb->entity, and return an error\ncode. The caller takes the error code and handles the error by calling\ndvb_media_device_free(), which unregisters the entity and frees the\nfield again if it is not NULL. As dvb->entity may not NULLed in\ndvb_create_media_entity() when the allocation of dvbdev->pad fails, a\ndouble free may occur. This may also cause an Use After free in\nmedia_device_unregister_entity().\nFix this by storing NULL to dvb->entity when it is freed."], "name": "CVE-2022-50499", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat In-Vehicle Operating System 1"}], "public_date": "2025-10-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-50499\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50499\nhttps://lore.kernel.org/linux-cve-announce/2025100420-CVE-2022-50499-9f94@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-10-06T14:41:12.625182+00:00", "updated": "2025-10-06T14:41:12.625235+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}