CVE-2026-22978

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/* Pointer to the data (in user space) */\n __u16 length; /* number of fields or size in bytes */\n __u16 flags; /* Optional params */\n};\n\nMake sure to zero the structure to avoid disclosing 32bits of kernel data\nto user space."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nwifi: evitar la fuga de informaci\u00f3n del kernel de la estructura iw_point\n\nLa estructura iw_point tiene un agujero de 32 bits en arquitecturas de 64 bits.\n\nstruct iw_point {\n void __user *pointer; /* Puntero a los datos (en espacio de usuario) */\n __u16 length; /* n\u00famero de campos o tama\u00f1o en bytes */\n __u16 flags; /* Par\u00e1metros opcionales */\n};\n\nAseg\u00farese de poner a cero la estructura para evitar la divulgaci\u00f3n de 32 bits de datos del kernel al espacio de usuario."}], "id": "CVE-2026-22978", "lastModified": "2026-11-05T22:17:56.630", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 3.3, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-22978", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T21:17:32.819777Z", "version": "2.0.3"}}]}, "published": "2026-01-23T16:15:53.783", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/024f71a57d563fbe162e528c8bf2d27e9cac7c7b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/21cbf883d073abbfe09e3924466aa5e0449e7261"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/442ceac0393185e9982323f6682a52a53e8462b1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a3827e310b5a73535646ef4a552d53b3c8bf74f6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d21ec867d84c9f3a9845d7d8c90c9ce35dbe48f8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d943b5f592767b107ba8c12a902f17431350378c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e3c35177103ead4658b8a62f41e3080d45885464"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: wifi: avoid kernel-infoleak from struct iw_point", "id": "2432383", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2432383"}, "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": ["No description is available for this CVE."], "name": "CVE-2026-22978", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "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": "2026-01-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-22978\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-22978\nhttps://lore.kernel.org/linux-cve-announce/2026012347-CVE-2026-22978-4e34@gregkh/T"], "threat_severity": "Low"}

{"analysis": {"en": {"generated_at": "2026-04-18T15:14:58.214923+00:00", "value": {"mitigation_remediation": ["Upgrade the Linux kernel to a release that includes the patch that zeroes struct iw_point, such as the latest stable kernel or the backported commit available on kernel.org.", "Rebuild all wifi drivers and user\u2011space utilities against the updated kernel headers to guarantee the struct is zeroed before being populated.", "If a kernel upgrade is delayed, limit the use of wifi ioctl interfaces to trusted applications only and monitor for unexpected ioctl activity, which may indicate abuse of the information disclosure."], "summary": {"action": "Patch Kernel", "impact": "Kernel Information Disclosure"}, "threat_synthesis": {"affected_systems": "All Linux kernel builds that contain the unpatched struct iw_point implementation are affected. The CPE list includes every Linux kernel and specifically the 6.19 release candidates 6.19rc1 through rc4. Stable kernels derived from the same source tree before the patch were also affected; therefore, any current 64\u2011bit kernel version lacking the zeroing fix is potentially vulnerable.", "description_and_impact": "The vulnerability arises when the Linux kernel does not clear the struct iw_point on 64\u2011bit architectures, allowing a user\u2011space process to read 32 bits of kernel data via wifi ioctl calls. The primary impact is the disclosure of kernel memory contents, which could aid an attacker in building an exploit. The attack vector is inferred from the description: a crafted struct iw_point sent through a wifi ioctl can trigger the leak without requiring elevated privileges.", "risk_and_exploitability": "The CVSS score of 3.3 classifies this as low severity. The EPSS score indicates an exploitation likelihood of less than 1%, and the vulnerability is not listed in the CISA KEV catalog. An attacker can trigger the leak from any user\u2011space process able to issue wifi ioctl commands; no privilege escalation is required, but the disclosed information could be useful for subsequent attacks."}}}}, "created": "2026-04-18T15:15:03.696661+00:00", "updated": "2026-04-18T15:15:03.696671+00:00", "vendors": []}