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CVE-2026-45904: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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Време до експлоатация

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: powerpc/eeh: fix recursive pci_lock_rescan_remove locking in EEH event handling The recent commit 1010b4c012b0 ("powerpc/eeh: Make EEH driver device hotplug safe") restructured the EEH driver to improve synchronization with the PCI hotplug layer. However, it inadvertently moved pci_lock_rescan_remove() outside its intended scope in eeh_handle_normal_event(), leading to broken PCI error reporting and improper EEH event triggering. Specifically, eeh_handle_normal_event() acquired pci_lock_rescan_remove() before calling eeh_pe_bus_get(), but eeh_pe_bus_get() itself attempts to acquire the same lock internally, causing nested locking and disrupting normal EEH event handling paths. This patch adds a boolean parameter do_lock to _eeh_pe_bus_get(), with two public wrappers: eeh_pe_bus_get() with locking enabled. eeh_pe_bus_get_nolock() that skips locking. Callers that already hold pci_lock_rescan_remove() now use eeh_pe_bus_get_nolock() to avoid recursive lock acquisition. Additionally, pci_lock_rescan_remove() calls are restored to the correct position—after eeh_pe_bus_get() and immediately before iterating affected PEs and devices. This ensures EEH-triggered PCI removes occur under proper bus rescan locking without recursive lock contention. The eeh_pe_loc_get() function has been split into two functions: eeh_pe_loc_get(struct eeh_pe *pe) which retrieves the loc for given PE. eeh_pe_loc_get_bus(struct pci_bus *bus) which retrieves the location code for given bus. This resolves lockdep warnings such as: <snip> [ 84.964298] [ T928] ============================================ [ 84.964304] [ T928] WARNING: possible recursive locking detected [ 84.964311] [ T928] 6.18.0-rc3 #51 Not tainted [ 84.964315] [ T928] -------------------------------------------- [ 84.964320] [ T928] eehd/928 is trying to acquire lock: [ 84.964324] [ T928] c000000003b29d58 (pc

    Засегнати продукти

    • Linux Linux: 502f08831a9afb72dc98a56ae6504da43e93b250 преди 89810e2d80281d42f855fac813786758ee16e323; f56e004b781719d8fdf6c9619b15caf2579bc1f2 преди 788dd28fd49610d6047cbb15dbf1186afffdfbaf; 59c6d3d81d42bf543c90597b4f38c53d6874c5a1 преди f49faa4a64f8ac0e38983e606075b25dfcfc9ad4; a426e8a6ae161f51888585b065db0f8f93ab2e16 преди 87a1f93986aa1500b85aeff16b0b71c29ea116ea; d2c60a8a387e9fcc28447ef36c03f8e49fd052a6 преди f8b16d5764ee1e78c1ef333017ad383ffe76fcdc; 1010b4c012b0d78dfb9d3132b49aa2ef024a07a7 преди 6e6561231c6cfc32c5631aeecc0928ff2b14265c; 1010b4c012b0d78dfb9d3132b49aa2ef024a07a7 преди b85ee287bfe52c6b2d9b41758b5e0d08679d5b39; 1010b4c012b0d78dfb9d3132b49aa2ef024a07a7 преди 815a8d2feb5615ae7f0b5befd206af0b0160614c; d42bbd8f30ac38b1ce54715bf08ec3dac18d6b25; 19d5036e7ad766cf212aebec23b9f1d7924a62bc; 5.10.241 преди 5.10.252; 5.15.190 преди 5.15.202; 6.1.148 преди 6.1.165; 6.6.102 преди 6.6.128; 6.12.42 преди 6.12.75; 6.15.10 преди 6.16; 6.16.1 преди 6.17
    • Linux Linux: 6.17; преди 6.17; 5.10.252 до 5.10.*; 5.15.202 до 5.15.*; 6.1.165 до 6.1.*; 6.6.128 до 6.6.*; 6.12.75 до 6.12.*; 6.18.14 до 6.18.*; 6.19.4 до 6.19.*; от 7.0 нататък

    История

    • 27 май 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-45904: Linux | freedomonline.bg