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CVE-2026-80724: Linux

8.8

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: ptp: vmclock: prevent read-only mappings from becoming writable vmclock_miscdev_mmap() rejects writable mappings of the shared vmclock ABI page with -EROFS, but leaves VM_MAYWRITE set. Userspace can map the page read-only and then upgrade it to writable with mprotect(), after which the guest can corrupt the host-written timekeeping data (sequence counter, UTC time, TSC offset) that the vmclock ABI defines as read-only. Clear VM_MAYWRITE on the read-only path so the mapping cannot be upgraded, as i915 does for its read-only objects and as fixed in drm/vc4 (CVE-2026-68445) and drm/panthor (CVE-2024-53071).

    Засегнати продукти

    • Linux Linux: 20503272422693d793b84f88bf23fe4e955d3a33 преди 5b4f2bec7bea6c04084d720d731bedee7caf878d; 20503272422693d793b84f88bf23fe4e955d3a33 преди 3f5677d2f817355147337f0453174c7bb0f3b66a; 20503272422693d793b84f88bf23fe4e955d3a33 преди 2496e141827102d6af512950057d402a2cfb2bfc; 20503272422693d793b84f88bf23fe4e955d3a33 преди 2e596e7814ba38cdc129991058b6c254ed37cb11; 20503272422693d793b84f88bf23fe4e955d3a33 преди 0ce59c4148ecd1520c5592a63bb3c8991ee2d326; 20503272422693d793b84f88bf23fe4e955d3a33 преди a5edadbae57e2298a56cf7a4e774a027905a331f
    • Linux Linux: 6.13; преди 6.13; 6.18.47 до 6.18.*; 6.18.50 до 6.18.*; 7.1.11 до 7.1.*; 7.2.1 до 7.2.*; 7.2.4 до 7.2.*; от 7.3 нататък

    История

    • 28 август 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-80724: Linux | freedomonline.bg