Loading vulnerability…
A vulnerability in the Linux Kernel (versions 2.6.38 through 4.14) exists due to improper use of pmd_mkdirty() in the touch_pmd() function within the Transparent Huge Pages (THP) implementation. When touch_pmd() is invoked via get_user_pages(), the page middle directory (pmd) can be marked dirty without a copy-on-write (COW) cycle, breaking the logic of can_follow_write_pmd(). This allows overwriting of read-only huge pages, such as the zero huge page and sealed shmem files, under certain conditions.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (2 hidden).
This repository contains a proof-of-concept (POC) exploit for the Huge Dirty Cow vulnerability (CVE-2017-1000405) in the Linux kernel. The exploit is implemented in C (main.c) and demonstrates the ability to overwrite the system's huge zero page by exploiting a race condition involving madvise, mmap, and write operations on /proc/self/mem. The README provides setup instructions, specifically requiring transparent huge pages to be enabled. The exploit does not provide a direct privilege escalation or shell, but serves as a demonstration of the vulnerability's impact. The code is self-contained, with no external network or remote attack vectors, and targets local Linux systems with the vulnerable kernel configuration.
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.
No public activity tracked yet. Mallory keeps watching.
No public activity observed for this vulnerability.
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.