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CVE-2023-52749 is a race condition in the Linux kernel SPI subsystem's suspend and resume handling. A synchronous no-queue SPI transfer sets the controller's current-message pointer and begins processing. If system suspend interrupts that transfer, resume processing can restart the SPI queue and clear the current-message pointer before the interrupted transfer resumes. When the transfer later finalizes, it dereferences the now-NULL pointer. The upstream fix serializes suspend against synchronous transfers by acquiring the SPI bus mutex and maintaining a suspend flag.
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7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel SPI null-pointer dereference during suspend handling.
Linux kernel SPI null-pointer dereference during system suspend.
A Linux kernel SPI subsystem null-pointer dereference vulnerability during suspend.
A CVE included in the OpenShift Container Platform 4.15.40 advisory; no vulnerability details are provided in the content.
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.