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CVE-2026-89596: Linux

7.1

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: forcedeth: fix off-by-one when saving/restoring non-PCI config space nv_suspend() and nv_resume() walk the non-PCI configuration space with for (i = 0; i <= np->register_size/sizeof(u32); i++) which runs one iteration too many. saved_config_space is declared as u32 saved_config_space[NV_PCI_REGSZ_MAX/4]; and NV_PCI_REGSZ_VER3 is equal to NV_PCI_REGSZ_MAX (0x604), so on a VER3 device register_size/sizeof(u32) is exactly the array length and the last iteration addresses one element past the end. The element it lands on is np->name_rx[0..3]: saved_config_space[] is followed immediately by char name_rx[IFNAMSIZ + 3], and char needs no padding. Nothing observable is corrupted by that, because nv_request_irq() rewrites name_rx with sprintf() before it is ever passed to request_irq(). The bug is the out-of-bounds access itself, which UBSAN reports and which CONFIG_UBSAN_TRAP=y turns into a trap that aborts the running kernel code, plus an MMIO read and, on resume, an MMIO writel() to base + 0x604, one dword past the range the driver mapped: np->base = ioremap(addr, np->register_size); VER1 and VER2 devices stay inside the array, but they too get the stray read and the stray write one dword past their own window. Caught by UBSAN on an Apple Macmini3,1 (MCP79) during a deep S3 cycle. The splat below is trimmed: the build path in the file name, the CPU and taint lines, the Workqueue line, the "?" hint frames, and the frames below device_suspend are all cut. The kernel was tainted, with an out-of-tree nouveau and CPU_OUT_OF_SPEC; forcedeth itself was the stock module. UBSAN: array-index-out-of-bounds in drivers/net/ethernet/nvidia/forcedeth.c:6225:25 index 385 is out of range for type 'u32 [385]' Call Trace: dump_stack_lvl+0x5d/0x80 ubsan_epilogue+0x5/0x2b __ubsan_handle_out_of_bounds.cold+0x54/0x59 __this_module+0xe398c/0xe9010 [forcedeth] pci_pm_suspend+0x80/0x170 dpm_ru

    Засегнати продукти

    • Linux Linux: 1a1ca86158eee303af5270338695f90bc7ae02b3 преди effd589568b2c4399894a23000286210c60af6d7; 1a1ca86158eee303af5270338695f90bc7ae02b3 преди 702aa4a44c87026b97b1da5c5ca80e1fa8a9875a; 1a1ca86158eee303af5270338695f90bc7ae02b3 преди fc71c6c3d3e3bb17474dcd1162aea6783a452a64; 1a1ca86158eee303af5270338695f90bc7ae02b3 преди c4d5953582463f45e48b14ef9815e5fb636f7e1f; 1a1ca86158eee303af5270338695f90bc7ae02b3 преди 9379f8527ca60d92715c90b32f1b477de9ec32cb; 1a1ca86158eee303af5270338695f90bc7ae02b3 преди 0c3f4544ff3873594c8af1b907b4ac4e6d5ce005; 1a1ca86158eee303af5270338695f90bc7ae02b3 преди c4f196bfeedd71e56aba4b63bd8f919edb2f7056; 1a1ca86158eee303af5270338695f90bc7ae02b3 преди 9393f1d656a79693e0c123ff7bc7c5c0f708046d
    • Linux Linux: 2.6.27; преди 2.6.27; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; 7.3 до *

    История

    • 11 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-89596: Linux | freedomonline.bg