{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","favicon":"https://feed.craftedsignal.io/favicon-32x32.png","feed_url":"https://feed.craftedsignal.io/cpes/cpe2.3asamsunggalaxy_s26_ultra/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":[],"_cs_cpes":["cpe:2.3:a:samsung:galaxy_s26_ultra:*:*:*:*:*:*:*:*"],"_cs_cves":[{"cvss":7.8,"id":"CVE-2026-98260"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Galaxy S26 Ultra"],"_cs_severities":["high"],"_cs_tags":[],"_cs_type":"advisory","_cs_vendors":["Samsung"],"content_html":"\u003cp\u003eCVE-2026-98260 is a critical kernel memory corruption vulnerability discovered in the Timer subsystem of the Infinity Core series, which is utilized in ARM64-based Android implementations. The vulnerability manifests when a non-leader thread fails to invoke the exec() system call, causing a POSIX CPU timer bound to that thread to be incorrectly swapped. The associated timer node remains in the timerqueue of the active task; subsequent attempts by the kernel to reference this node during cleanup result in a use-after-free condition.\u003c/p\u003e\n\u003cp\u003eA public proof-of-concept exploit, identified as 'ic98260', has been released for the ARM64 platform. The exploit requires an attacker to populate target-specific kernel structure offsets (e.g., TASK_CRED, TASK_CPU_TIMER_HEAD) to gain full root privileges. The vulnerability has been confirmed on the Samsung Galaxy S26 Ultra and allows an attacker to elevate privileges from the untrusted_app domain to root. This issue poses a high risk to users of affected Android devices, as the exploit code provides a functional roadmap for achieving arbitrary kernel memory modification.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker deploys a malicious application to the Android target device with minimal user permissions.\u003c/li\u003e\n\u003cli\u003eThe application executes a non-leader thread that triggers a failure during the exec() system call process.\u003c/li\u003e\n\u003cli\u003eThe kernel fails to properly release the POSIX CPU timer node, leaving it active in the timerqueue of the task.\u003c/li\u003e\n\u003cli\u003eThe application triggers a cleanup routine that forces the kernel to reference the stale timer node pointer.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the resulting use-after-free vulnerability to corrupt adjacent kernel memory structures.\u003c/li\u003e\n\u003cli\u003eThe attacker uses memory corruption to overwrite the task structure credentials (task_struct-\u0026gt;cred).\u003c/li\u003e\n\u003cli\u003eThe process gains elevated root privileges, bypassing Android application sandbox restrictions.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eThe vulnerability allows an unprivileged application on the target Android device to achieve full root access. This bypasses the Android security model, enabling the attacker to access sensitive user data, modify system files, and install persistent backdoors. While the exploit requires device-specific kernel structure offsets, the availability of the PoC significantly lowers the barrier for attackers to develop functional exploits for specific hardware models.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cp\u003ePrioritize security patches from the device manufacturer as they become available to address the Infinity Core Timer subsystem vulnerability. Monitor for any suspicious applications attempting to perform kernel memory interaction or privilege escalation attempts using non-standard system calls. Since this vulnerability requires low-privilege access, audit installed applications on enterprise-managed Android devices and restrict installation from untrusted sources.\u003c/p\u003e\n","date_modified":"2026-10-19T00:59:55Z","date_published":"2026-10-19T00:59:55Z","id":"https://feed.craftedsignal.io/briefs/2026-10-cve-2026-98260-infinity-core/","summary":"CVE-2026-98260 is a kernel memory corruption vulnerability in the Infinity Core Timer subsystem allowing local privilege escalation to root on Android devices via a use-after-free condition.","title":"Kernel Memory Corruption Vulnerability in Infinity Core Timer Subsystem","url":"https://feed.craftedsignal.io/briefs/2026-10-cve-2026-98260-infinity-core/"}],"language":"en","title":"CraftedSignal Threat Feed - Cpe:2.3:a:samsung:galaxy_s26_ultra:*:*:*:*:*:*:*:*","version":"https://jsonfeed.org/version/1.1"}