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CVE-2022-2938 is a use-after-free vulnerability in the Linux kernel Pressure Stall Information (PSI) subsystem. The flaw occurs when a PSI trigger is destroyed while a process is waiting on that trigger through poll(). A local user able to register and poll a PSI trigger can cause the stale trigger object to be accessed in kernel space. PSI is disabled by default where CONFIG_PSI_DEFAULT_DISABLED is used; systems are affected only if PSI was explicitly enabled at boot with the psi=1 kernel parameter.
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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.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel use-after-free condition when a PSI trigger is destroyed during polling.
Linux kernel PSI trigger use-after-free when a trigger is destroyed during polling.
Linux kernel pressure-stall-information trigger use-after-free vulnerability.
A CVE included in the OpenShift Container Platform 4.13.37 update.
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.