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CVE-2026-31467 is a deadlock vulnerability in the Linux kernel EROFS filesystem. The bio completion path can perform decompression directly in process context, such as with dm-verity, and invoke vm_map_ram() with GFP_KERNEL. Under insufficient-memory conditions, allocation can trigger direct reclaim and swapping I/O. A nested submit_bio_wait() can then deadlock when the current bio submission context has a non-NULL bio_list, causing a denial of service.
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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.
If you can’t patch tonight, do this now.
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.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A denial-of-service vulnerability in the Linux kernel EROFS filesystem.
A Linux kernel vulnerability in the erofs filesystem that can cause denial of service.
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.