CVE-2024-43833

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These are sub-device to sub-device links and\nif the async notifier is related to a V4L2 device, the source sub-device\nof the ancillary link is NULL, leading to a NULL pointer dereference.\nCheck the notifier's sd field is non-NULL in\nv4l2_async_create_ancillary_links().\n\n[Sakari Ailus: Reword the subject and commit messages slightly.]"}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: media: v4l: async: corrige la desreferencia del puntero NULL al agregar enlaces auxiliares En v4l2_async_create_ancillary_links(), se crean enlaces auxiliares para subdispositivos de lentes y flash. Estos son enlaces de subdispositivo a subdispositivo y si el notificador as\u00edncrono est\u00e1 relacionado con un dispositivo V4L2, el subdispositivo de origen del enlace auxiliar es NULL, lo que lleva a una desreferencia del puntero NULL. Verifique que el campo sd del notificador no sea NULL en v4l2_async_create_ancillary_links(). [Sakari Ailus: Reformule el asunto y confirme ligeramente los mensajes.]"}], "id": "CVE-2024-43833", "lastModified": "2026-06-17T07:51:48.083", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-43833", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T16:08:21.590404Z", "version": "2.0.3"}}]}, "published": "2024-08-17T10:15:09.040", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/249212ceb4187783af3801c57b92a5a25d410621"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9b4667ea67854f0b116fe22ad11ef5628c5b5b5f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b87e28050d9b0959de24574d587825cfab2f13fb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fe0f92fd5320b393e44ca210805e653ea90cc982"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: media: v4l: async: Fix NULL pointer dereference in adding ancillary links", "id": "2305491", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2305491"}, "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"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmedia: v4l: async: Fix NULL pointer dereference in adding ancillary links\nIn v4l2_async_create_ancillary_links(), ancillary links are created for\nlens and flash sub-devices. These are sub-device to sub-device links and\nif the async notifier is related to a V4L2 device, the source sub-device\nof the ancillary link is NULL, leading to a NULL pointer dereference.\nCheck the notifier's sd field is non-NULL in\nv4l2_async_create_ancillary_links().\n[Sakari Ailus: Reword the subject and commit messages slightly.]", "A flaw was found in the v4l2-async module in the Linux kernel. Adding ancillary links with a NULL source sub-device can cause a NULL pointer dereference, resulting in a denial of service."], "name": "CVE-2024-43833", "package_state": [{"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"}], "public_date": "2024-08-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-43833\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-43833\nhttps://lore.kernel.org/linux-cve-announce/2024081728-CVE-2024-43833-4e73@gregkh/T"], "statement": "The kernel as shipped in Red Hat Enterprise Linux is not affected by this vulnerability because the vulnerable code is not present.", "threat_severity": "Moderate"}

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