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CVE-2024-40978 is a Linux kernel flaw in the qedi SCSI driver's debugfs read handler, qedi_dbg_do_not_recover_cmd_read(). The function passes a __user pointer directly to sprintf(), causing the kernel to write through an unvalidated userspace address rather than using the normal user-copy mechanism. Reading the affected debugfs attribute can consequently trigger a kernel page fault and crash. The fix formats output into a small local stack buffer and returns it through simple_read_from_buffer(), which performs copy_to_user().
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel vulnerability covered by the security update.
Crash condition in Linux kernel QEDI SCSI debugfs attribute handling.
Linux kernel SCSI qedi driver flaw that can cause a crash while reading a debugfs attribute.
Linux kernel SCSI qedi driver flaw that can cause a crash when reading a debugfs attribute.
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.