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CVE-2021-1048 is a use-after-free vulnerability in the Android kernel's eventpoll implementation, specifically in the ep_loop_check_proc function in eventpoll.c. The flaw can result in memory corruption after a freed object is reused, creating a path for a local attacker to elevate privileges. Available reporting indicates the bug affects Android kernel code and was later associated with exploit chains that injected malicious code into privileged processes. The vulnerability was noted as having been fixed upstream in the Linux kernel before patch adoption propagated across affected Android devices.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A use-after-free vulnerability in the Android kernel, exploited by Predator spyware.
A Linux/Android vulnerability assessed to allow code injection into privileged processes and likely used by the QUAILEGGS privilege-escalation method in the ALIEN/PREDATOR spyware chain.
An Android zero-day used with a Chrome flaw in a full exploit chain to install Predator spyware on fully up-to-date Android devices.
An Android kernel use-after-free vulnerability used as a zero-day in an exploit chain to gain elevated privileges and compromise Android devices.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.