Към съдържанието
Търсене

CVE-2026-90430: Linux

Няма оценка

CVSS

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: iommu/tegra241-cmdqv: Publish an LVCMDQ only after it is fully initialized tegra241_vintf_init_lvcmdq() stores the freshly allocated vcmdq pointer to the vintf->lvcmdqs[] array, before tegra241_vcmdq_alloc_smmu_cmdq() builds the vcmdq->cmdq. The error ISR dereferences that cmdq, so a latched LVCMDQ error (e.g. one inherited across a kexec) firing in this window would make tegra241_vintf0_handle_error() pass the still-zeroed arm_smmu_cmdq down to __arm_smmu_cmdq_skip_err(), dereferencing NULL queue register pointers. Drop the store from tegra241_vintf_init_lvcmdq() and publish the vcmdq at the end of the allocation instead, with an smp_store_release() that pairs with an smp_load_acquire() in the ISR, which can see a fully built LVCMDQ or NULL. The user-owned LVCMDQ allocation moves accordingly, publishing the vcmdq once tegra241_vcmdq_hw_init_user() succeeds, using a plain store since a user VINTF's lvcmdqs[] has no lockless reader -- the error ISR only walks the VINTF0 array.

    Засегнати продукти

    • Linux Linux: 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 преди d5ec248ee1c79354979c23f7f390e856e9535651; 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 преди 792f720fc23fe5bd6508d40ed73ae739debd6dcb; 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 преди b4535b403d6bf9bcc24dbd62096711329b9c612c; 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 преди cbc41aacd49e695338940196e7084770365e1b68
    • Linux Linux: 6.12; преди 6.12; 6.12.111 до 6.12.*; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; 7.3 до *

    История

    • 17 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-90430: Linux | freedomonline.bg