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A vulnerability in the Linux kernel's netfs subsystem, specifically when using the deprecated PG_private_2 method (as used by Ceph), allowed improper handling of cache copy requests when caching is temporarily disabled (e.g., due to a DIO write). If netfs_advance_write() encountered a disabled cache stream, it would prematurely bail out, failing to properly cancel the request and clean up associated folios, leaving PG_private_2 set. This could result in resource leaks and potentially hang the system, as observed during xfstests with Ceph and active cache.
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What an attacker gets, and what they’ve been doing with it.
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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.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.