CVE-2026-97948
CVE-2026-97948 updated by NVD
Summary
In the Linux kernel, the following vulnerability has been resolved: powerpc/eeh: Fix recursive locking on devices without EEH sensitive driver The commit 1010b4c012b0 ("powerpc/eeh: Make EEH driver device hotplug safe") refactored the EEH code such that the pci_rescan_remove_lock is held at the beginning of eeh_handle_normal_event() and the eeh_reset_device() is called with that lock being held. Looks like the commit missed to remove the existing lock/unlock inside eeh_rmv_device() which is no longer necessary. This is causing the eehd to hang on the lock which it actually holds when that code path is taken. [ ] 0xc00000011c78f870 [ ] __switch_to+0xfc/0x1a0 [ ] pci_lock_rescan_remove+0x30/0x44 [ ] eeh_rmv_device+0x290/0x2e0 [ ] eeh_pe_dev_traverse+0x80/0x130 [ ] eeh_reset_device+0xcc/0x23c [ ] eeh_handle_normal_event+0x830/0xa80 [ ] eeh_event_handler+0xf8/0x190 [ ] kthread+0x194/0x1b0 [ ] start_kernel_thread+0x14/0x18 The issue is seen for cases where the errors are detected on the PHB directly AND|OR for devices where the driver error_detected() returns PCI_ERS_RESULT_NEED_RESET, and driver being not EEH sensitive(i.e no error handlers like slot_reset(), resume() etc defined).
References
Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.
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