{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/ioctl/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.8,"id":"CVE-2025-47408"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["memory corruption","ioctl","driver vulnerability","cve-2025-47408"],"_cs_type":"advisory","_cs_vendors":["Qualcomm"],"content_html":"\u003cp\u003eA memory corruption vulnerability has been identified in Qualcomm drivers, tracked as CVE-2025-47408. This vulnerability occurs when one driver makes an Input/Output Control (IOCTL) call to another driver using a malformed or invalid input/output buffer. The flaw stems from improper validation or handling of the provided buffer, leading to a memory corruption condition. Successful exploitation of this vulnerability could lead to arbitrary code execution, privilege escalation, or a denial-of-service condition. This vulnerability was disclosed in the May 2026 Qualcomm Security Bulletin. The potential impact necessitates that detection engineering teams prioritize identifying and mitigating this threat across systems utilizing affected Qualcomm components.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker gains initial access to the system, potentially through social engineering or exploiting another vulnerability.\u003c/li\u003e\n\u003cli\u003eThe attacker identifies a vulnerable Qualcomm driver that is susceptible to IOCTL calls with invalid buffers.\u003c/li\u003e\n\u003cli\u003eThe attacker develops a malicious driver or application capable of making IOCTL calls.\u003c/li\u003e\n\u003cli\u003eThe malicious driver crafts a specific IOCTL request with a purposefully malformed input/output buffer.\u003c/li\u003e\n\u003cli\u003eThe malicious driver sends the crafted IOCTL request to the targeted Qualcomm driver.\u003c/li\u003e\n\u003cli\u003eThe targeted Qualcomm driver receives the IOCTL request and attempts to process the invalid buffer.\u003c/li\u003e\n\u003cli\u003eDue to the malformed buffer, the driver\u0026rsquo;s memory management routines are corrupted, leading to a write to an arbitrary memory location.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the memory corruption to execute arbitrary code, escalate privileges, or cause a denial-of-service condition.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2025-47408 can have severe consequences. An attacker can gain complete control over the affected system, potentially leading to data theft, system compromise, or disruption of services. While the specific number of affected devices or sectors is not explicitly stated, the widespread use of Qualcomm components in various devices suggests a broad potential impact. If successful, this exploit could allow attackers to install persistent backdoors, steal sensitive information, or use the compromised device as a launching point for further attacks within the network.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMonitor process creations for unsigned or untrusted drivers being loaded, and deploy the first Sigma rule provided below, to identify potential malicious driver activity.\u003c/li\u003e\n\u003cli\u003eEnable driver verifier on test systems using Qualcomm drivers to trigger memory corruption issues and aid in reverse engineering the vulnerability.\u003c/li\u003e\n\u003cli\u003eReview Qualcomm\u0026rsquo;s May 2026 Security Bulletin for specific device models and affected driver versions to prioritize patching efforts.\u003c/li\u003e\n\u003cli\u003eImplement the second Sigma rule to detect suspicious IOCTL calls originating from unusual processes or locations, focusing on potential exploitation attempts of CVE-2025-47408.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-04T17:16:21Z","date_published":"2026-05-04T17:16:21Z","id":"/briefs/2026-05-ioctl-memory-corruption/","summary":"A memory corruption vulnerability, CVE-2025-47408, exists in Qualcomm drivers when another driver calls an IOCTL with an invalid input/output buffer, potentially leading to code execution or denial of service.","title":"Qualcomm Driver IOCTL Memory Corruption Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-05-ioctl-memory-corruption/"},{"_cs_actors":[],"_cs_cves":[{"cvss":7.8,"id":"CVE-2026-21375"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["cve-2026-21375","qualcomm","memory-corruption","ioctl"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eCVE-2026-21375 is a memory corruption vulnerability affecting certain Qualcomm chipsets. The vulnerability stems from a lack of proper size validation when accessing an output buffer during IOCTL (Input/Output Control) processing. This flaw, disclosed in the April 2026 Qualcomm security bulletin, allows a local attacker with limited privileges to potentially overwrite memory, leading to denial of service or even arbitrary code execution. Successful exploitation requires a malicious application or process to interact with the vulnerable IOCTL interface on the target device. The vulnerability is classified as a buffer over-read (CWE-126).\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eA malicious application is installed on a device with a vulnerable Qualcomm chipset.\u003c/li\u003e\n\u003cli\u003eThe application gains the necessary permissions to interact with the device driver via IOCTL calls.\u003c/li\u003e\n\u003cli\u003eThe malicious application crafts a specific IOCTL request with a small output buffer size.\u003c/li\u003e\n\u003cli\u003eThe device driver processes the IOCTL request but fails to properly validate the output buffer size against the actual data being written.\u003c/li\u003e\n\u003cli\u003eThe driver attempts to write data exceeding the allocated buffer size.\u003c/li\u003e\n\u003cli\u003eThe excess data overwrites adjacent memory regions in kernel space.\u003c/li\u003e\n\u003cli\u003eThis memory corruption can lead to a crash or, with careful manipulation, arbitrary code execution.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-21375 can result in a denial-of-service condition, where the device becomes unstable or unresponsive. In more severe scenarios, a local attacker could leverage the memory corruption to achieve arbitrary code execution with elevated privileges. Given the widespread use of Qualcomm chipsets in mobile devices and embedded systems, the potential impact could affect millions of devices globally.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the security patches released by Qualcomm as detailed in the April 2026 security bulletin to remediate CVE-2026-21375.\u003c/li\u003e\n\u003cli\u003eMonitor process creation events for suspicious processes attempting to interact with device drivers, using the provided Sigma rule.\u003c/li\u003e\n\u003cli\u003eImplement runtime validation of IOCTL buffer sizes within kernel drivers to prevent buffer overflows (mitigation, not detection).\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-06T16:16:30Z","date_published":"2026-04-06T16:16:30Z","id":"/briefs/2026-04-qualcomm-ioctl-memory-corruption/","summary":"CVE-2026-21375 is a memory corruption vulnerability in Qualcomm chipsets due to insufficient output buffer size validation during IOCTL processing, potentially leading to arbitrary code execution.","title":"Qualcomm IOCTL Memory Corruption Vulnerability (CVE-2026-21375)","url":"https://feed.craftedsignal.io/briefs/2026-04-qualcomm-ioctl-memory-corruption/"},{"_cs_actors":[],"_cs_cves":[{"cvss":7.8,"id":"CVE-2026-21378"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["camera-driver","memory-corruption","ioctl"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eCVE-2026-21378 is a high-severity memory corruption vulnerability affecting camera sensor drivers. This vulnerability stems from a failure to validate the size of an output buffer when processing IOCTL requests. An attacker with local access can leverage this flaw to potentially overwrite memory, leading to arbitrary code execution or denial of service. Qualcomm, Inc. reported this vulnerability, and it is documented in their April 2026 security bulletin. Exploitation could allow unauthorized privilege escalation on affected systems using the vulnerable driver.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker gains local access to a system with the vulnerable camera sensor driver installed.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious IOCTL request targeting the vulnerable camera sensor driver.\u003c/li\u003e\n\u003cli\u003eThe malicious IOCTL request triggers the vulnerable code path in the driver related to output buffer handling.\u003c/li\u003e\n\u003cli\u003eThe driver attempts to access the output buffer without properly validating its size, leading to a buffer over-read (CWE-126).\u003c/li\u003e\n\u003cli\u003eThe buffer over-read corrupts memory adjacent to the output buffer.\u003c/li\u003e\n\u003cli\u003eThe attacker carefully crafts the IOCTL request to overwrite critical kernel data structures.\u003c/li\u003e\n\u003cli\u003eBy overwriting kernel structures, the attacker gains elevated privileges or control of the system.\u003c/li\u003e\n\u003cli\u003eThe attacker executes arbitrary code with kernel privileges, potentially installing malware or causing a denial-of-service condition.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-21378 can lead to complete system compromise, including arbitrary code execution with kernel-level privileges. The number of affected devices is currently unknown, but any system utilizing the vulnerable camera sensor driver is potentially at risk. The vulnerability can be exploited locally, making it a concern for devices with unpatched drivers. A successful attack can result in data theft, system instability, or the installation of persistent malware.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the patch or update provided by Qualcomm in their April 2026 security bulletin to remediate CVE-2026-21378 (\u003ca href=\"https://docs.qualcomm.com/product/publicresources/securitybulletin/april-2026-bulletin.html)\"\u003ehttps://docs.qualcomm.com/product/publicresources/securitybulletin/april-2026-bulletin.html)\u003c/a\u003e.\u003c/li\u003e\n\u003cli\u003eMonitor systems for suspicious IOCTL activity targeting camera sensor drivers. Create a rule to detect abnormal IOCTL calls to camera devices.\u003c/li\u003e\n\u003cli\u003eEnable driver verifier to detect memory corruption issues during driver execution, aiding in the identification of potential exploitation attempts.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-06T16:16:30Z","date_published":"2026-04-06T16:16:30Z","id":"/briefs/2026-04-camera-sensor-ioctl-vuln/","summary":"A memory corruption vulnerability (CVE-2026-21378) exists in a camera sensor driver due to improper validation of output buffer size during IOCTL processing, potentially leading to arbitrary code execution.","title":"CVE-2026-21378 Memory Corruption in Camera Sensor Driver","url":"https://feed.craftedsignal.io/briefs/2026-04-camera-sensor-ioctl-vuln/"},{"_cs_actors":["Qualcomm"],"_cs_cves":[{"cvss":7.8,"id":"CVE-2026-21372"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["cve-2026-21372","memory-corruption","heap-overflow","ioctl"],"_cs_type":"threat","_cs_vendors":[],"content_html":"\u003cp\u003eCVE-2026-21372 describes a memory corruption vulnerability affecting systems that handle IOCTL requests, specifically during memcpy operations. The vulnerability arises when the system does not properly validate buffer sizes, leading to a heap-based buffer overflow (CWE-122). This flaw can be triggered by sending IOCTL requests with invalid buffer sizes, potentially allowing an attacker with local access to execute arbitrary code or cause a denial-of-service condition. Qualcomm reported this vulnerability in their April 2026 security bulletin. Successful exploitation requires the attacker to have the ability to send specifically crafted IOCTL requests to the vulnerable driver or service.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker gains local access to the system.\u003c/li\u003e\n\u003cli\u003eAttacker identifies the vulnerable driver or service that processes IOCTL requests.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious IOCTL request with an invalid buffer size, specifically designed to trigger a buffer overflow during a memcpy operation.\u003c/li\u003e\n\u003cli\u003eAttacker sends the crafted IOCTL request to the vulnerable driver or service.\u003c/li\u003e\n\u003cli\u003eThe driver or service attempts to copy data into a buffer using memcpy, without properly validating the size of the input buffer.\u003c/li\u003e\n\u003cli\u003eDue to the invalid buffer size, the memcpy operation writes beyond the allocated buffer, causing a heap-based buffer overflow.\u003c/li\u003e\n\u003cli\u003eThe heap overflow corrupts adjacent memory regions, potentially overwriting critical data structures or code.\u003c/li\u003e\n\u003cli\u003eThe memory corruption leads to a denial-of-service condition or allows the attacker to execute arbitrary code with the privileges of the vulnerable driver or service.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-21372 allows a local attacker to cause memory corruption, potentially leading to arbitrary code execution or a denial-of-service condition. This could allow attackers to gain elevated privileges or disrupt the normal operation of the affected system. The impact is significant due to the potential for complete system compromise if code execution is achieved.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInvestigate systems which utilize Qualcomm components for vulnerable IOCTL handlers and memcpy operations.\u003c/li\u003e\n\u003cli\u003eMonitor process execution for anomalous memory access patterns associated with drivers that handle IOCTL requests.\u003c/li\u003e\n\u003cli\u003eApply patches or updates provided by Qualcomm to address CVE-2026-21372 as detailed in the Qualcomm security bulletin (\u003ca href=\"https://docs.qualcomm.com/product/publicresources/securitybulletin/april-2026-bulletin.html)\"\u003ehttps://docs.qualcomm.com/product/publicresources/securitybulletin/april-2026-bulletin.html)\u003c/a\u003e.\u003c/li\u003e\n\u003cli\u003eImplement robust input validation for IOCTL requests to prevent buffer overflows, focusing on buffer size checks before memcpy operations.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule provided below to detect potential exploitation attempts by monitoring for processes interacting with device drivers and triggering a memcpy near the IOCTL call.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-06T16:16:29Z","date_published":"2026-04-06T16:16:29Z","id":"/briefs/2026-04-ioctl-memcpy-corruption/","summary":"A memory corruption vulnerability (CVE-2026-21372) exists when processing IOCTL requests with invalid buffer sizes leading to a heap-based buffer overflow, reported by Qualcomm with a CVSS v3.1 score of 7.8.","title":"Qualcomm IOCTL Memory Corruption Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-04-ioctl-memcpy-corruption/"}],"language":"en","title":"CraftedSignal Threat Feed — Ioctl","version":"https://jsonfeed.org/version/1.1"}