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CVE-2024-41065 affects Linux kernel PowerPC pSeries dispatch trace log handling. When CONFIG_HARDENED_USERCOPY is enabled, dtl_file_read attempts to copy a dispatch trace log (DTL) SLUB object to userspace without a permitted usercopy range. Hardened usercopy validation rejects that operation and invokes usercopy_abort, resulting in a kernel BUG. The corrective change declares the full DTL object safe for userspace copying by configuring a usercopy range beginning at offset zero and spanning DISPATCH_LOG_BYTES.
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Linux kernel PowerPC pseries userspace-copy access-control flaw involving dtl SLUB objects.
A Linux kernel PowerPC pSeries dispatch trace log (DTL) usercopy-hardening defect. On systems with CONFIG_HARDENED_USERCOPY enabled, reading the DTL debugfs log triggers a kernel BUG because its SLUB object was not whitelisted for user-space copying. The remediation permits copying the DTL object's full DISPATCH_LOG_BYTES range.
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